Source: http://www.docstoc.com/docs/71997109/SPAJ-140-C-Overcurrent-and-earth-fault-relay
Timestamp: 2014-08-21 16:34:21
Document Index: 17117416

Matched Legal Cases: ['ART\n8', 'ART 1', 'ART 2', 'ART 1', 'ART 2', 'ART 1', 'ART 2', 'ART 1', 'ART1', 'ART2']

User&#180;s manual and Technical description
3I &gt;
2                                           I
f n = 50Hz                   I n = 1A 5A     (I )         5           I   L1   I   L2   I   L3   I 0 IRF
60Hz                  I n = 1A 5A     (I o )
80...265V –
~                                                                                RESET
I &gt;/I n
18...80V –                                 U aux                                           STEP
t &gt; [s]
I &gt;&gt; / I n
REGISTERS                              OPER.IND.
t &gt;&gt; [s]
0        0    0   0                0
I 0 &gt;/ I n
1     I    /I n
L1                        1    I &gt;START
t 0 &gt; [s ]
2     I L2 / I n                    2    I &gt;TRIP                             k0
3     I L3 / I n                    3       &gt;
I &gt; START
I o &gt;&gt; /I n
4    I max (15min) /I n             4       &gt;
I &gt; TRIP
5     t (I &gt; )[ % ]                 5    I o &gt;START                          t o &gt;&gt;[s]
6     t (I &gt; )[ % ]
&gt;                       6    I o &gt;TRIP                                             PROGRAM
7    I o /I n                       7         &gt;
I o &gt; START
8     t (I o &gt; )[ % ]               8         &gt;
I o &gt; TRIP                          SGB
9     t (I o &gt; )[ % ]
&gt;                     9    CBFP
RS 611 006 -                   Ser.No.                                                 SPCJ 4D29
Issued 97-01-30
Version A (replaces 34 SPAJ 16 EN1)                                                            Combined overcurrent
Checked TK
Approved TK                                                                                      and earth-fault relay
Contents                     Features .......................................................................................................................... 2
Application ..................................................................................................................... 2
Description of operation ................................................................................................. 3
Connections ................................................................................................................... 4
Signal diagram ................................................................................................................ 7
Signal abbreviations ........................................................................................................ 7
Start and operation indicators ......................................................................................... 8
Power supply and output relay module ........................................................................... 9
Technical data .............................................................................................................. 10
Maintenance and repairs ............................................................................................... 13
Spare parts .................................................................................................................... 13
Dimensions and instructions for mounting .................................................................. 14
Order information ........................................................................................................ 14
The complete manual for the relay SPAJ 140 C contains the following submanuals:
General relay description for SPAJ 140 C                                                     1MRS 750629-MUM EN
General characteristics of D type relay modules                                              1MRS 750066-MUM EN
Combined overcurrent and earth-fault relay module
type SPCJ 4D29                                                                               1MRS 750119-MUM EN
Features                     Three-phase, low-set phase overcurrent unit                              Extensive data communication capabilities over
with definite time or inverse definite minimum                           built-in serial port
time (IDMT) characteristic
Outstanding design flexibility for easy selection
Three-phase, high-set phase overcurrent unit                             of appropriate operation schemes for different
with instantaneous or definite time function                             applications
Low-set, non-directional earth-fault unit with                           Numerical display of setting values, measured
definite time or inverse definite minimum time                           values, memorized fault values, fault codes etc.
(IDMT) characteristic
Enhanced system reliability and availability due
High-set, non-directional earth-fault unit with                          to continuous hardware and software self-super-
instantaneous or definite time function                                  vision with auto-diagnosis
Built-in breaker failure protection function                             Powerful software support for setting and
parametrizing of the relay and for recording of
Two heavy-duty and four light-duty output                                relay parameters with a portable PC.
relays with field-selectable configuration
Application                  The combined overcurrent and earth-fault relay                           flexible tripping and signalling facilities. The
SPAJ 140 C is intended to be used for the                                overcurrent and earth-fault relays can also be
selective short-circuit and earth-fault protection                       used inother applications requiring single-, two-
of radial feeders in solidly earthed, resistance                         or three-phase overcurrent protection and non-
earthed or impedance earthed power systems.                              directional earth-fault protection. The com-
The integrated protection relay includes a phase                         bined overcurrent and earth-fault relay also fea-
overcurrent unit and an earth-fault unit with                            tures circuit breaker failure protection.
Description of   The combined overcurrent and earth-fault relay            starts delivering a start signal after a preset ~40
operation        is a secondary relay to be connected to the               ms start time, when the set start current is
current transformers of the protected object.             exceeded. When the set operate time elapses, the
The three-phase overcurrent unit and the earth-           earth-fault unit operates.
fault unit continuously measure the phase cur-
rents and the neutral current of the protected            The low-set stage of the overcurrent unit and the
object. On detection of a fault the relay starts,         low-set stage of the earth-fault unit may be given
trips the circuit breaker, initiates auto-reclosing,      definite time or inverse definite minimum time
provides alarm, records fault data etc. in accord-        (IDMT) characteristic. When the IDMT char-
ance with the application and the configured              acteristic is chosen six time/current curves are
relay functions.                                          available. Four of the curves comply with the BS
142 and IEC 255 and are named &quot;Normal
When the phase current exceeds the set start              inverse&quot;, &quot;Very inverse&quot;, &quot;Extremely inverse&quot;
current of the low-set stage I&gt;, the overcurrent          and &quot;Long-time inverse&quot;. The two additional
unit starts delivering a start signal after a preset      inverse time curves called the &quot;RI-curve&quot; and
~60 ms start time. When the set operate time at           the &quot;RXIDG-curve&quot; are also provided.
definite time operation or the calculated operate
time at inverse time operation elapses, the over-         By appropriate configuration of the output relay
current unit operates. In the same way the high-          matrix, the start signals of the overcurrent and
set stage I&gt;&gt; of the overcurrent unit starts deliv-       earth-fault units are obtained as contact func-
ering a start signal after a preset ~40 ms start          tions. The start signals can be used for blocking
time, when the set start current is exceeded.             co-operating protection relays, for signalling
When the set operate time elapses, the overcur-           and for initiating auto-reclosing.
rent unit operates.
The relay includes one external binary input,
When the earth-fault current exceeds the set              which is controlled by an external control volt-
start current of the low-set stage I0&gt;, the earth-        age. The function of the control input is deter-
fault unit starts delivering a start signal after a       mined by selector switches in the protection
preset ~60 ms start time. When the set operate            relay module. The control input can be used for
time at definite time operation or the calculated         blocking the operation of one or more protec-
operate time at inverse time operation elapses,           tion stages, for resetting a latched output relay in
the earth-fault unit operates. In the same way            the manual reset mode or for enforcing a new set
the high-set stage I0&gt;&gt; of the earth-fault unit           of relay setting parameters by remote control.
THREE PHASE DEFINITE TIME                  TRIP
OR INVERSE TIME LOW-SET         51
IL1              OVERCURRENT PROTECTION
THREE PHASE INSTANTANEOUS
OR DEFINITE TIME HIGH-SET                SIGNAL 1
LOW-SET EARTH-FAULT             51 N     SIGNAL 2
INSTANTANEOUS OR DEFINITE
TIME HIGH-SET EARTH-FAULT      50 N
PROTECTION                              START 1
REMOTE RESET, REMOTE SETTING
Io               CONTROL OR BLOCKING INPUT FOR            START 2
THE DIFFERENT CURRENT STAGES
CIRCUIT BREAKER FAILURE                     IRF
PROTECTION                      51BF
I                                         0
U aux                                                                                                                                                                                                                       +
EXTERNAL                          IRF                          START 1                                                        START 2                                SIGNAL 1                                       SIGNAL 2                                             TRIP
CONTROL                                                                                                                                                                                                                                                                                                SERIAL
63   1 23 4 5 6   7 8 9 25 26 27    11   10           62 61 70 71 72                                  74 75                                                       77 78                                   80 81                                         68 69                                               65 66
~                             +                                                  +                                                       +                                      +                                             +                                       +
F                                            E                                                 D                                         C                                              B                                           A
U2                 + -
TS1                                                SS1                                      SS2                                           SS3                                               TS2
1                                                    1                                          1                                             1                                        1                       TRIP
U3                                                                                                                                                                                                                                                                                                   SGB/6
SGR1/2
SGR1/6
SGR1/4
U1            IRF
3I&gt;                                                                                                                                 T1
3I&gt;&gt;                                                                                                                                   T3
Io&gt;&gt;                                                                                                                                   T7
RC SETTINGS   I/O
SGB/8                                                                                                                                            SGF/4
SPAJ 140 C                                                  RESET                                                        T9                                                                              0.1...1s
Uaux                                 Auxiliary voltage
A, B, C, D, E, F                     Output relays
IRF                                  Self-supervision
SGR                                  Switchgroups for the configuration of the output relays
SGB                                  Switchgroup for the configuration of the blocking or control signal
TRIP                                 Trip output relay
SIGNAL 1                             Signal on operation of the overcurrent unit
SIGNAL 2                             Signal on operation of the earth-fault unit
START 1                              Starting or auxiliary trip signal as selected with switchgroup SGR3
START 2                              Start signal of the low-set overcurrent stage I&gt;
U1                                   Overcurrent and earth-fault relay module SPCJ 4D29
U3                                   Input module SPTE 4E1
U2                                   Power supply and output relay module SPTU 240 R1 or SPTU 48 R1
T1…T9                                Start and operation indications
SERIAL PORT                          Serial communication port
SPA-ZC_                              Bus connection module
Rx/Tx                                Receiver bus terminal (Rx) and transmitter bus terminal (Tx) of the bus
1   61
77     4   65
80     5   66
6   74
8   70
The energizing currents of the overcurrent unit       selected with switches1...8 of switchgroup SGR2.
are connected to terminals 1-2, 4-5 and 7-8,          The switch matrixes for routing operate signals
when the rated current of the CT secondary            to the output relays B and C are identical.
circuits is In = 5 A. When the rated current of the   Normally output relay B is used for signalling on
CT secondary circuits is In = 1 A, terminals 1-3,     operation of the overcurrent unit and C for
4-6 and 7-9 are used. The relay can also be used      signalling on operation of the earth-fault unit.
in single-phase or two-phase applications sim-        This is also the default setting of the relay on
ply by leaving one or two energizing inputs           delivery from the factory.
unoccupied. In single-phase applications the
same energizing current can be routed through         The start signals of the protection stages of the
two energizing inputs, which may increase the         relay are routed to output relay D. The signals to
operating speed of the overcurrent unit, espe-        be routed to output relay D are selected by
cially at instantaneous operation.                    means of switches 1, 3, 5 and 7 of switchgroup
SGR1, which is a software switchgroup found in
The energizing current for the earth-fault unit is    the main menu of the protection relay module.
connected to terminals 25-26 when the rated           The start signals of the low-set and high-set stage
current In = 5 A and to terminals 25-27 when          of the overcurrent unit are selected with switches
the rated current In = 1 A.                           1 and 3, and the start signals of the high-set and
low-set stage of the earth-fault unit with switches
The control input 10-11 can be used in three          5 and 7.
different ways, i) as control input for an external
blocking signal, ii) as the control input for         The output relay E is a heavy-duty relay as
unlatching the trip relay, or iii) as the control     output relay A. It can be controlled by the start
input for the remote control of relay settings.       and operate signals of the protection stages.
The requested function is selected by means of        Output relay E is also used a trip relay for the
switches switchgroup SGB in the main menu of          circuit breaker failure protection (CBFP), when
the protection relay module.                          the CBFP protection is used. In this case the trip
signal can be used either to control a circuit
The auxiliary supply voltage of the relay is          breaker upstreams or to control a second trip
connected to terminals 61-62. At d.c. supply          coil on the main circuit breaker to increase the
the positive lead is connected to terminal 61.        redundancy of the circuit breaker.
The level of the voltage to be applied to the
terminals depends on the type of power supply         Output relay F functions as output relay for the
and output relay module inserted in the relay.        self-supervision system of the protection relay.
For further details see the description of the        The F relay is energized under normal operating
power supply module. The permitted auxiliary          conditions and contact gap 70-72 is closed. If a
voltage range of the relay is marked on the relay     fault is detected by the self-supervision system,
front panel.                                          or on loss of auxiliary supply, the output relay
drops off and the NO contact 71-72 closes.
Output relay A is a heavy-duty trip relay capable
of controlling most circuit breakers. The oper-       By means of bus connection modules type
ate signals of the different protection stages are    SPA -ZC17 and SPA-ZC21 the relay connects
routed to the trip relay with switches 2,4,6 and      to the fibre-optic SPA bus via a 9-pole, D-type
8 of switchgroup SGR1. On delivery from the           subminiature connector located at the rear panel
factory all the protection stages are routed to the   of the relay. The terminals of the fibre-optic
trip relay. A latching of the output relay A can      cables are connected to the counter terminals Rx
be selected with switches 6 and 7 of switchgroup      (receiver) and Tx (transmitter) of the bus con-
SGB.                                                  nection module. The fibre-optic cables are linked
from one relay to another and to the substation
Output relays B and C can be used for signalling      level communication unit, for instance type
on operation of the relay module. The signals to      SRIO 1000M.
be routed to the output relays B and C are
Signal diagram   The figure below schematically illustrates how                    be configured to obtain the required protection
the start, trip, control and blocking signals can                 functions.
SGR3 / 1
SGR3 / 2
SGR2 / 1
IRF                 F
I&gt;            t&gt;, k   SGR2 / 2
SGR1 / 2
SGR3 / 3                                                                           START 1
SGR1 / 3               SGB / 6
1          TS1                 E
IL3    SGB / 1                            SGF2 / 7
SGR3 / 4
SGR2 / 3                    1
I&gt;&gt;           t&gt;&gt;     SGR2 / 4
SGR1 / 4
SS1                 D
BS                                                                                    SGF1 / 4                      (AR2)
1         0.1...1s
SS2                 C
SGR3 / 5
SGR1 / 5                                                                           SIGNAL 2
SGR3 / 6                                                                  SS3                 B
Io&gt;      to&gt;, ko      SGR2 / 5
SGR2 / 6
Io                                       SGR1 / 6                                                                  (AR1)
SGB / 3                            SGR3 / 7                               RESET+
SGR1 / 7               SGB / 7         PROGRAM
1              TS2                 A
SGR3 / 8
SGR2 / 7
Io&gt;&gt;          to&gt;&gt;                                1
SGR2 / 8
SGR1 / 8
SGB / 5      REMOTE SETTINGS
RELAY RESET                  REDUCED BLOCK DIAGRAM                            SPCJ 4D29                 SPTU ___R1
Fig. 4. Signal diagram of the combined overcurrent and earth-fault relay type SPAJ 140 C
The functions of the blocking and start signals                   the protection relay module. The functions of
are selected with the switches of switchgroups                    the different switches are explained in detail in
SGF, SGB and SGR. The checksums of the                            the user&#180;s manual of the protection relay mod-
switchgroups, are found in the setting menu of                    ule SPCJ 4D29.
Signal           IL1, IL2, IL3     Energizing current of phase L1, L2 and L3
abbreviations    I0                Neutral current (Residual current)
BS                Blocking or control signal
SS1               Start signal 1
SS2               Start signal 2
SS3               Start signal 3
TS1               Operate signal 1 (Trip signal 1)
TS2               Operate signal 2 (Trip signal 2)
BS                Blocking signal
AR1...3           Auto-reclose start signals (not in use in relay SPAJ 140 C)
IRF               Internal relay failure
SGF               Switchgroup for functions
SGB               Switchgroup for blockings
SGR               Switchgroup for relay configuration
Operation                                                                                                                        A) The indicator TRIP is lit when one of the
indicators                                                                                                                3I &gt;
protection stages operates. When the protec-
f n = 50Hz                   I n = 1A 5A (I )           5           I   L1   I   L2   I   L3   I 0 IRF
tion stage resets, the red indicator remains lit.
60Hz                  I n = 1A 5A (I o )
SPAJ 140 C                                                                               B) If the display is dark when one of the protec-
tion stages I&gt;, I&gt;&gt;, I0&gt; or I0&gt;&gt; operates, the
~                                                                              RESET
18...80V –                               U aux
STEP         faulty phase or the neutral circuit is indicated
with a yellow LED. If, for instance, the TRIP
REGISTERS                          OPER.IND.
indicator glows red, and the indicators IL1
0        0 0      0                0
and IL2 at the same time are lit, overcurrent
1          /I n                     1   I &gt;START
L2                        2   I &gt;TRIP
has occurred on phase L1 and L2.
3     I L3 / I n                    3      &gt;
4     I max (15min) /I n            4      &gt;
5     t (I &gt; )[ % ]                 5
I o &gt;START                         t o &gt;&gt;[s]                    C) Besides being a code number at data presen-
&gt;                           I o &gt;TRIP                                            PROGRAM
7     I o /I n                      7        &gt;
tation, the leftmost red digit in the display
8     t (I o &gt; )[ % ]               8        &gt;
I o &gt; TRIP
&gt;                     9   CBFP
serves as a visual operation indicator. An
operation indicator is recognized by the fact
that the red digit alone is switched on. The
RS 611 006 -                   Ser.No.                                               SPCJ 4D29
following table named OPERATION IND.
on the relay front panel is a key to the
function code numbers used.
1                        I&gt; START                          = The low-set stage I&gt; of the overcurrent unit has started
2                        I&gt; TRIP                           = The low-set stage I&gt; of the overcurrent unit has operated
3                        I&gt;&gt; START                         = The high-set stage I&gt;&gt; of the overcurrent unit has started
4                        I&gt;&gt; TRIP                          = The high-set stage I&gt;&gt; of the overcurrent unit has operated
5                        I0&gt; START                         = The low-set stage I0&gt; of the earth-fault unit has started
6                        I0&gt; TRIP                          = The low-set stage I0&gt; of the earth-fault unit has operated
7                        I0&gt;&gt; START                        = The high-set stage I0&gt;&gt; of the earth-fault unit has started
8                        I0&gt;&gt; TRIP                         = The high-set stage I0&gt;&gt; of the earth-fault unit has operated
9                        CBFP                              = Circuit breaker failure protection has operated
D) The TRIP indications persist when the pro-                                                                       SGF2/1 = 1 manual reset of I&gt; start indication
tection stage returns to normal. The indica-                                                                     SGF2/2 = 1 manual reset of I&gt;&gt; start indication
tor is reset by pushing the RESET/STEP                                                                           SGF2/3 = 1 manual reset of I0&gt; start indication
push-button.                                                                                                     SGF2/4 = 1 manual reset of I0&gt;&gt; start indication
Further, the indicators may be reset via the                                                                        On delivery of the relay from the factory the
external control input 10-11 by applying a                                                                          switches SGF2/1…4 are preset at 0.
control voltage to the input, provided switch
SGB/8 is in position 1.                                                                                             E) Shortly after the internal self-supervision
system has detected a permanent relay fault
The basic protection relay functions are not                                                                           the red IRF indicator is switched on and the
depending on the state of the operation indica-                                                                        output relay of the self-supervision system
tors, reset or non-reset. The relay is permanently                                                                     operates. Further, in most fault situations an
operative.                                                                                                             autodiagnostic fault code is shown in the
display. The fault code is composed of a red
If a protection stage starts, but not operates,                                                                        figure 1 and a green code number which
because the energizing quantity goes below the                                                                         indicates fault type. The fault code persists
set start current before the operate time circuit                                                                      until the STEP/RESET push-button is
has timed out, the start indicators are normally                                                                       pressed. When a fault code appears on the
automatically switched off. However, by means                                                                          display, the code number should be recorded
of the switches SGF2/1…4 the start indications                                                                         for statistical and maintenance purposes.
may be made persistant which means that they
are to be manually reset by pushing the RESET/
STEP push-button. The persistent indications
are obtained through the following switch set-
Power supply       To be able to operate the relay needs a secured        panel. The primary side of the power supply
and output relay   auxiliary voltage supply. The power supply             module is protected with a fuse, F1, located on
module             module forms the voltages required by the pro-         the PCB of the module. The fuse size is 1 A
tection relay module and the auxiliary relays.         (slow).
The withdrawable power supply and output
relay module is located behind the system front        The power supply unit is a pulse-width modu-
panel, which is fixed by means of four cross-          lated (PWM) dc/dc converter with galvanically
slotted screws. The power supply and output            isolated primary and secondary sides. It forms
relay module contains the power supply unit, all       the dc secondary voltages required by the pro-
output relays, the control circuits of the output      tection relay module; that is +24 V, &#177;12 V and
relays and the electronic circuitry of the external    +8 V. The output voltages &#177;12 V and +24 V are
control inputs.                                        stabilized in the power supply module, while the
+5 V logic voltage required by the protection
The power supply and output relay module can           relay module is stabilized in the protection relay
be withdrawn after removing the system front           module.
+8V      Unstabilized logics
1 A slow                                                        voltage
80...265 V ac &amp; dc                                                             voltage
18...80 V dc
Output relay coil
+24V      voltage
Fig. 5.Voltage levels of the power supply unit
A green LED indicator Uaux on the system front         Insulation test voltage between the primary and
panel is lit when the power supply module is in        secondary side and the protective earth
operation. The supervision of the voltages sup-                              2 kV, 50 Hz, 1 min
plying the electronics is located in the protec-
tion relay module. If a secondary voltage differs      Rated power Pn       5W
too much from its rated value, a self-supervision
alarm will be generated. An alarm is also issued       Voltage ranges of the power supply modules:
when the power supply module is withdrawn              - SPTU 240 R1       Uaux = 80...265 V dc/ac
from the relay case, or on loss of auxiliary supply.   - SPTU 48 R1        Uaux = 18...80 V dc
There are two versions of power supply and
output relay modules available. For both types,        The SPTU 240 R1 module can be fed from
the secondary sides and the relay configurations       either an ac source or a dc source. SPTU 48 R1
are identical, but the input voltage ranges differ.    is designed for dc supply only. The permitted
auxiliary voltage range of the relay is marked on
the relay system front panel.
Technical data   Energizing inputs
Rated current In                                    1A                      5A
- continuously                                      4A                    20 A
- for 1 s                                           100 A                 500 A
Dynamic current withstand, half-wave value          250 A                 1250 A
Input impedance                                     &lt;100 mΩ               &lt;20 mΩ
Rated frequency fn, on request                                50 Hz or 60 Hz
Tripping contacts
Terminals                                                     65-66, 74-75
Rated voltage                                                 250 V dc/ac
Continuous carry                                              5A
Make and carry for 0.5 s                                      30 A
Make and carry for 3.0 s                                      15 A
Breaking capacity for dc, when the trip circuit
time-constant L/R ≤ 40 ms, at 48/110/220 V dc                 5 A/3 A/1 A
Contact material                                              AgCdO2
Terminals                                                     70-71-72, 68-69, 77-78, 80-81
Make and carry for 0.5 s                                      10 A
Make and carry for 3.0 s                                      8A
Breaking capacity for dc, when the signal circuit
time-constant L/R ≤ 40 ms, at 48/110/220 V dc
signal circuit voltage                                        1 A/0.25 A/0.15 A
Blocking, remote reset or remote setting input                10-11
Control voltage level                                         18...265 V dc or 80...265 V ac
Control current of activated input                            2…20 mA
Supply and output relay module, type SPTU 240 R1              80...265 V dc/ac
Supply and output relay module, type SPTU 48 R1               18...80 V dc
Power consumption under quiescent/operating
conditions                                                    ~4 W/ ~6 W
Overcurrent unit of SPCJ 4D29
Low-set overcurrent stage I&gt; *
Start current **
- at definite time characteristic                                   0.5...5.0 x In
- at inverse time characteristic ***                                0.5…2.5 x In
- definite time characteristic
- operate time t&gt;                                                 0.05...300 s
- inverse definite minimum time (IDMT)
characteristic as per IEC 255-4 and BS 142                        Extremely inverse
- special type inverse characteristic                               RI-type inverse
- time multiplier k                                               0.05...1.0
High-set overcurrent stage I&gt;&gt; *
Start current                                                       0.5...40 x In and ∞, infinite
Operate time t&gt;&gt;                                                    0.04...300 s
Earth-fault unit of SPCJ 4D29
Low-set earth-fault stage I0&gt; *
Start current                                                       0.1...0.8 x In
- operate time t0&gt;                                                0.05...300 s
- time multiplier k0                                              0.05...1.0
High-set earth-fault stage I0&gt;&gt; *
Start current                                                       0.1...10.0 x In and ∞, infinite
Operate time t0&gt;&gt;                                                   0.05... 300 s
* Note!                                               ** Note!
The operation of the low-set stage based on           If the set start current exceeds 2.5 x In, the
inverse time characteristic will be blocked by        maximum continuous carry of the energizing
starting of the high-set stage. Then the operate      inputs (4 x In) must be noted.
time of the overcurrent unit is determined by
the set operate time of the high-set stage at heavy   *** CAUTION!
fault currents. In order to obtain a trip signal,     Never use start current settings above 2.5 x In at
the high-set stage must be routed to a trip output    inverse time operation although allowed by the
relay.                                                relay.
Transmission mode                                               Fibre optic serial bus
Data code                                                       ASCII
Selectable data transfer rates                                  4800 or 9600 Bd
Fibre optic bus connection modules for
powering from external power source
- for plastic core cables                                       SPA-ZC 17 BB
- for glass fibre cables                                        SPA-ZC 17 MM
powering from host relay
- for plastic core cables                                       SPA-ZC 21 BB
- for glass fibre cables                                        SPA-ZC 21 MM
Dielectric tests *
Insulation test voltage acc. to IEC 255-5                       2 kV, 50 Hz, 1 min
Impulse test voltage acc. to IEC 255-5                          5 kV, 1.2/50 &#181;s, 0.5 J
Insulation resistance acc. to IEC 255-5                         &gt;100 MΩ at 500 V dc
Disturbance tests *
High frequency interference test acc. to IEC 255-22-1,
- common mode                                                   2.5 kV, 1 MHz, 400 pls/s
- differential mode                                             1 kV, 1 MHz, 400 pls/s
Electrostatic discharge test acc. to IEC 801-2, class IV
- contact discharge                                             8 kV, 150 pF
- air discharge                                                 15 kV, 150 pF
Electromagnetic field test acc. to IEC 801-3, class III         10 V/m, 150 kHz…1000 MHz
Fast transient test acc. to IEC 801-4, class III/IV
- common mode                                                   4 kV
- differential mode                                             2 kV
Spike test, class III (KEMA)                                    1 kV, 0.15/50 &#181;s
Magnetic field test acc. to IEC 521                             400 A/m
Variation voltage                                               68…265 V
Interruption 80 V - 50%                                         0…200 ms
Interruption 80 V - 100%                                        0…30 ms
Interruption 255 V - 100%                                       0…160 ms
Seismic tests acc. to ANSI/IEEE C37.98-1987
- operating basis earth-quake tests (OBE)                       0.5…5.25 g
- safe shut-down earth-quake tests (SSE)                        0.5…7.5 g
Vibration test                                                  2…13.2 Hz, &#177;1.0 mm
13.2…100 Hz, &#177;0.7 g
Shock/bump test acc. to IEC-21-2                                20 g, 1000 bumps/direction
Corrosion test                                                      Battelle-test
Specified ambient service temperature range                         -10...+55&#176;C
Long term damp heat withstand according to IEC 68-2-3               &lt;95% at 40&#176;C for 56 d
Transport and storage temperature range                             -40...+70&#176;C
Protection by enclosure according to IEC 529,
when the relay is panel mounted                                     IP 54
Mass of the relay including flush mounting relay case               ~3.5 kg
* The dielectric and disturbance tests do not apply to the serial port, which is used for the bus
connection module only.
Maintenance   When the protection relay is operating under         If the relay fails in operation or if the operating
and repair    the conditions specified in the section &quot;Techni-     values remarkably differ from those of the relay
cal data&quot;, the relay is practically maintenance-     specifications, the relay should be given a proper
free. The relay modules include no parts or          overhaul. Minor measures can be taken by per-
components subject to an abnormal physical or        sonnel from the instrument work-shop of the
electrical wear under normal operating condi-        customer’s company, e.g. replacement of auxil-
tions.                                               iary relay modules. All major measures involv-
ing overhaul of the electronics are to be taken by
If the environmental conditions at the relay         the manufacturer. Please contact the manufac-
operating site differ from those specified, as to    turer or his nearest representative for further
temperature, humidity, or if the atmosphere          information about checking, overhaul and
around the relay contains chemically active gases    recalibration of the relay.
or dust, the relay ought to be visually inspected
in association with the relay secondary test or      Note!
whenever the relay modules are withdrawn from        Numerical protection relays contain electronic
the case. At the visual inspection the following     circuits which are liable to serious damage due to
things should be noted:                              electrostatic discharge. Before removing a mod-
ule containing electronic circuits, ensure that
- Signs of mechanical damage on relay modules,       you are at the same electrostatic potential as the
contacts and relay case                            equipment, for instance, by touching the relay
- Accumulation of dust inside the relay cover or     case.
case; remove by blowing air carefully
- Rust spots or signs of erugo on terminals, case    Note!
or inside the relay                                Static protection relays are measuring instru-
ments and should be handled with care and
On request, the relay can be given a special         protected against moisture and mechanical stress,
treatment for the protection of the printed cir-     especially during transport.
cuit boards against stress on materials, caused by
Spare parts   Three-phase overcurrent and earth-fault module          SPCJ 4D29
Uaux = 80...265 V ac/dc                                 SPTU 240 R1
Uaux = 18...80 V dc                                     SPTU 48 R1
Input module                                            SPTE 4E1
Bus connection module                                   SPA-ZC 17__ or SPA-ZC 21__
Dimensions for      The relay is housed in a normally flush-mounted        panel surface when the relay is panel mounted.
mounting            case. The relay can also be arranged for semi-         The relay case is complete with a hinged gasketed,
flush mounting with the use of a 40 mm, 80 mm          clear, UV-stabilized polycarbonate cover with a
or 120 mm raising frame, which reduces the             sealable fastening screw. The degree of protec-
depth behind the panel by the same dimension.          tion by enclosure of the cover is also IP 54.
The type designations of the raising frames are
SPA-ZX 111 for the 40 mm frame, SPA-ZX 112             A terminal strip and two multipole connectors
for the 80 mm frame and SPA-ZX 113 for the             are mounted on the back of the relay case to
120 mm frame. A surface mounting case SPA-             facilitate all input and output connections. To
ZX 110 is also available.                              each heavy duty terminal, i.e. measuring input,
power supply or trip output, one 6 mm2, one
The relay case is made of profile aluminium and        4 mm2 or one or two 2.5 mm2 wires can be
finished in beige.                                     connected. No terminal lugs are needed. The
signalling outputs are available on a six pole
A cast aluminium alloy mounting frame with a           detachable connector and the serial bus connec-
rubber gasket provides a degree of protection by       tion is using a 9-pin D-type connnector.
enclosure to IP 54 between the relay case and the
216                 34
30            186
129 &#177;1                                    a               b
139 &#177;1
Raising frame          a       b
SPA-ZX 111            176      74
SPA-ZX 112            136     114
SPA-ZX 113             96     154
Order information                                                Example
1. Quantity and type designation             15 pcs relay type SPAJ 140 C
2. Rated frequency                           fn = 50 Hz
3. Auxiliary voltage                         Uaux = 110 V dc
4. Accessories                               15 pcs bus connection modules SPA-ZC17 MM
2 pcs fibre optical cables SPA-ZF MM 100
14 pcs fibre optical cables SPA-ZF MM 5
5. Special requirements                      —
D-type relay modules
3I &gt;   Relay symbol
Fastening screw                                                      I
I        I        I        I o IRF
Indicators for measured                  L1       L2       L3              Self-supervision alarm indicator
quantities                                                                 (Internal Relay Fault)
Display, 1 + 3 digits
I &gt;/I n            STEP
k                            Reset / Step push-button
Indicators for setting
parameters                                    I o &gt;/ I n
t o &gt; [s]
t o &gt;&gt;[s]
Indicators for switchgroups
SGF, SGB and SGR
TRIP     Trip indicator
SPCJ 4D29           Module type designation
Issued 95-04-12
Version A (replaces 34 SPC 3 EN1)
Checked JH
of D type relay modules
Approved TK
Contents                     Front panel lay-out ......................................................................................................... 1
Control push buttons ..................................................................................................... 3
Display ........................................................................................................................... 3
Display main menu ................................................................................................... 3
Display submenus ..................................................................................................... 3
Selector switchgroups SGF, SGB, SGR .......................................................................... 4
Settings ........................................................................................................................... 4
Setting mode ............................................................................................................. 4
Example 1: Setting of relay operation values .............................................................. 7
Example 2: Setting of relay switchgroups................................................................... 9
Recorded information ................................................................................................... 11
Trip test function ......................................................................................................... 12
Example 3: Forced activation of outputs ................................................................. 13
Operation indicators ..................................................................................................... 15
Fault codes.................................................................................................................... 15
Control             The front panel of the relay module contains          certain position in the main menu to the corre-
push-buttons        two push buttons. The RESET / STEP push               sponding submenu, for entering the setting
button is used for resetting operation indicators     mode of a certain parameter and together with
and for stepping forward or backward in the           the STEP push button for storing the set values.
display main menu or submenus. The PRO-               The different operations are described in the
GRAM push button is used for moving from a            subsequent paragraphs in this manual.
Display             The measured and set values and the recorded          When the auxiliary voltage of a protection relay
data are shown on the display of the protection       module is switched on the module initially tests
relay module. The display consists of four digits.    the display by stepping through all the segments
The three green digits to the right show the          of the display for about 15 seconds. At first the
measured, set or recorded value and the leftmost      corresponding segments of all digits are lit one
red digit shows the code number of the register.      by one clockwise, including the decimal points.
The measured or set value displayed is indicated      Then the center segment of each digit is lit one
by the adjacent yellow LED indicator on the           by one. The complete sequence is carried out
front panel. When a recorded fault value is being     twice. When the test is finished the display turns
displayed the red digit shows the number of the       dark. The testing can be interrupted by pressing
corresponding register. When the display func-        the STEP push button. The protection func-
tions as an operation indicator the red digit         tions of the relay module are alerted throughout
alone is shown.                                       the testing.
Display main menu   Any data required during normal operation are         From a dark display only forward movement is
accessible in the main menu i.e. present meas-        possible. When the STEP push button is pushed
ured values, present setting values and recorded      constantly, the display continuously moves for-
parameter values.                                     ward stopping for a while in the dark position.
The data to be shown in the main menu are             Unless the display is switched off by stepping to
sequentially called up for display by means of        the dark point, it remains lit for about 5 minutes
the STEP push button. When the STEP push              from the moment the STEP push button was
button is pressed for about one second, the           last pushed. After the 5 minutes&#39; time-out the
display moves forward in the display sequence.        dispaly is switched off.
When the push button is pressed for about 0.5
seconds, the display moves backward in the
Display submenus    Less important values and values not very often       the display moves forward when the STEP push
set are displayed in the submenus. The number         button is pushed for one second and backward
of submenus varies with different relay module        when it is pushed for 0.5 seconds. The main
types. The submenus are presented in the de-          menu has been re-entered when the red display
scription of the concerned protection relay           turns dark.
When a submenu is entered from a main menu
A submenu is entered from the main menu by            of a measured or set value indicated by a LED
pressing the PROGRAM push button for about            indicator, the indicator remains lit and the ad-
one second. When the push button is released,         dress window of the display starts flashing. A
the red digit of the display starts flashing, indi-   submenu position is indicated by a flashing red
cating that a submenu has been entered. Going         address number alone on the dispaly without
from one submenu to another or back to the            any lit set value LED indicator on the front
main menu follows the same principle as when          panel.
moving from the main menu display to another;
Selector switch-   Part of the settings and the selections of the
groups SGF, SGB    operation characteristic of the relay modules in       Switch No        Pos.          Weigth       Value
and SGR            various applications are made with the selector
switchgroups SG_ . The switchgroups are soft-               1             1       x      1     =     1
ware based and thus not physically to be found              2             0       x      2     =     0
in the hardware of the relay module. The indi-              3             1       x      4     =     4
cator of the switchgroup is lit when the checksum           4             1       x      8     =     8
of the switchgroup is shown on the display.                 5             1       x     16     =    16
Starting from the displayed checksum and by                 6             0       x     32     =     0
entering the setting mode, the switches can be              7             1       x     64     =    64
set one by one as if they were real physical                8             0       x    128     =     0
switches. At the end of the setting procedure, a
checksum for the whole switchgroup is shown.                          Checksum           ∑     =    93
The checksum can be used for verifying that the
switches have been properly set. Fig. 2 shows an
example of a manual checksum calculation.             Fig. 2. Example of calculating the checksum of
a selector switchgroup SG_.
When the checksum calculated according to the
example equals the checksum indicated on the          The functions of the selector switches of the
display of the relay module, the switches in the      different protection relay modules are described
concerned switchgroup are properly set.               in detail in the manuals of the different relay
Settings           Most of the start values and operate times are set    and the second settings can be done in three
by means of the display and the push buttons on       different ways:
the front panel of the relay modules. Each
setting has its related indicator which is lit when   1) By command V150 over the serial communi-
the concerned setting value is shown on the              cation bus
display.                                              2) By an external control signal BS1, BS2 or
RRES (BS3)
In addition to the main stack of setting values       3) Via the push-buttons of the relay module, see
most D type relay modules allow a second stack           submenu 4 of register A.
of settings. Switching between the main settings
Setting mode       Generally, when a large number of settings is to      cursor is moved on from digit to digit by press-
be altered, e.g. during commissioning of relay        ing the PROGRAM push button and in each
systems, it is recommended that the relay set-        stop the setting is performed with the STEP
tings are entered with the keyboard of a              push button. After the parameter values have
personal computer provided with the necessary         been set, the decimal point is put in place. At the
software. When no computer nor software is            end the position with the whole display flashing
available or when only a few setting values need      is reached again and the data is ready to be
to be altered the procedure described below is        stored.
A set value is recorded in the memory by press-
The registers of the main menu and the submenus       ing the push buttons STEP and PROGRAM
contain all parameters that can be set. The           simultaneously. Until the new value has been
settings are made in the so called setting mode,      recorded a return from the setting mode will
which is accessible from the main menu or a           have no effect on the setting and the former
submenu by pressing the PROGRAM push                  value will still be valid. Furthermore any attempt
button, until the whole display starts flashing.      to make a setting outside the permitted limits for a
This position indicates the value of the param-       particular parameter will cause the new value to be
eter before it has been altered. By pressing the      disqualified and the former value will be main-
PROGRAM push button the programming se-               tained. Return from the setting mode to the
quence moves forward one step. First the              main menu or a submenu is possible by pressing
rightmost digit starts flashing while the rest of     the PROGRAM push button until the green
the display is steady. The flashing digit is set by   digits on the display stop flashing.
means of the STEP push button. The flashing
NOTE! During any local man-machine com-                                     any doubt about the settings of the module to be
munication over the push buttons and the dis-                               inserted, the setting values should be read using
play on the front panel a five minute time-out                              a spare relay unit or with the relay trip circuits
function is active. Thus, if no push button has                             disconnected. If this cannot be done the relay
been pressed during the last five minutes, the                              can be sett into a non-tripping mode by pressing
relay returns to its normal state automatically.                            the PROGRAM push button and powering up
This means that the display turns dark, the relay                           the relay module simultaneously. The display
escapes from a display mode, a programming                                  will show three dashes &quot;- - -&quot; to indicate the non-
routine or any routine going on, when the relay                             tripping mode. The serial communication is
is left untouched. This is a convenient way out                             operative and all main and submenues are acces-
of any situation when the user does not know                                sible. In the non-tripping mode unnecessary
what to do.                                                                 trippings are avoided and the settings can be
checked. The normal protection relay mode is
Before a relay module is inserted into the relay                            entered automatically after a timeout of five
case, one must assure that the module has been                              minutes or ten seconds after the dark display
given the correct settings. If there however is                             position of the main menu has been entered.
MAIN MENU                                         SUBMENU                              SETTING MODE
REV. STEP 0,5 s
STEP 0,5 s   PROGRAM 1 s            PROGRAM 5 s   PROGRAM 5 s
FWD.STEP 1 s
Last measuring value
1    Main setting                     1   0   0   0
Actual setting value 1                               value for stage 1
Actual setting value 2                          2    value for stage 1               MOVE FIGURE OR DECIMAL POINT
CURSOR WITH BUTTON PROGRAM 1 s
STORE NEW SETTING BY PRESSING
Memorized values etc.                                                                STEP AND PROGRAM SIMULTANEOUSLY
WHEN THE VALUE IS READY AND THE
WHOLE DISPLAY IS BLINKING
NOTE! IN MOST MENU CHARTS THE SUBMENUS HAVE BEEN DRAWN IN A HORIZONTAL DIRECTION IN ORDER TO GET
ALL MAIN AND SUBMENU POSITIONS SHOWN IN THE SAME CHART.
MAIN MENU                                        SUBMENUS
STEP 0.5 s   PROGRAM 1 s
Current on phase L3
REV. STEP 0.5 s                  FWD. STEP 1 s
Neutral current Io                                                  SUBMENUS
Main setting                 2   Second setting
Actual start value I&gt;                    1
value for I&gt;                     value for I&gt;
Actual operate time t&gt; or                1    Main setting                 2   Second setting
multiplier k for stage I&gt;                     value for t&gt; or k                value for t&gt; or k
Actual start value I&gt;&gt;                   1    Main setting                 2   Second setting
value for I&gt;&gt;                    value for I&gt;&gt;
Actual operate time t&gt;&gt;                  1    Main setting                 2   Second setting
of stage I&gt;&gt;                                  value for t&gt;&gt;                    value for t&gt;&gt;
Actual start value Io&gt;                   1    Main setting                 2   Second setting
value for Io&gt;                    value for Io&gt;
P            Actual operate time to&gt;                  1    Main setting                 2   Second setting
or multiplier ko                              value for to&gt; or ko              value for to&gt; or ko
M       Actual start value Io&gt;&gt;                  1    Main setting                 2   Second setting
A                                                     value for Io&gt;&gt;                   value for Io&gt;&gt;
N       Actual operate time to&gt;&gt;                 1    Main setting                 2   Second setting
value for to&gt;&gt;                   value for to&gt;&gt;
Actual setting of functional             1 Main setting of                 2   Main setting of
switchgroup SGF1                           SGF1 checksum                       SGF2 checksum
Actual setting of blocking               1    Main setting of              2   Second setting of
switchgroup SGB                               SGB checksum                     SGB checksum
Actual setting of relay                  1    Main setting of              2   Main setting of
S            switchgroup SGR1                              SGR1 checksum                    SGR2 checksum
Latest memorized, event (n)              1 Event (n-1)                     2 Event (n-2)
value of phase L1                          value of phase L1                 value of phase L1
2   Latest memorized, event (n)              1 Event (n-1)                     2   Event (n-2)
value of phase L2                          value of phase L2                   value of phase L2
Latest memorized, event (n)              1 Event (n-1)                     2   Event (n-2)
value of phase L3                          value of phase L3                   value of phase L3
Maximum demand current                   1 Highest maximum
4   value for 15 minutes                       demand value found
Fig. 4.Example of part of the main and submenus for the settings of the overcurrent and earth-fault
relay module SPCJ 4D29. The settings currently in use are in the main manu and they are displayed
by pressing the STEP push button. The main menu also includes the measured current values, the
registers 1...9, 0 and A. The main and second setting values are located in the submenus and are
called up on the display with the PROGRAM push button.
Example 1   Operation in the setting mode. Manual setting       for the main setting is 0.80 x In and for the
of the main setting of the start current value I&gt;   second setting 1.00 x In. The desired main start
of an overcurrent relay module. The initial value   value is 1.05 x In.
a)                                                      RESET
Press push button STEP repeatedly until the                     5x1s
LED close to the I&gt; symbol is lit and the current
start value appears on the display.
Enter the submenu to get the main setting value       PROGRAM
by pressing the PROGRAM push button more                        1s
than one second and then releasing it. The red
display digit now shows a flashing number 1,                               1 0. 8 0
indicating the first submenu position and the
green digits show the set value.
c)                                                    PROGRAM
Enter the setting mode by pressing the PRO-                     5s
GRAM push button for five seconds until the                                1 0. 8 0
Press the PROGRAM push button once again
for one second to get the rightmost digit flash-
1s         1 0. 8 0
e)                                                      RESET
Now the flashing digit can be altered. Use the
STEP push button to set the digit to the desired
f)                                                    PROGRAM
Press the PROGRAM push button to make the                       1s
middle one of the green digits flash.
g)                                                      RESET
Set the middle digit with of the STEP push                      2x
h)                                                    PROGRAM
leftmost green digit flash.
i)                                                       RESET
Set the digit with the STEP push button.                           0x
j)                                                      PROGRAM
Press the PROGRAM push button to make the                          1s
decimal point flash.
k)                                                       RESET
If needed, move the decimal point with the                         0x
STEP push button.
Press the PROGRAM push button to make the
whole display flash. In this position, corre-
sponding to position c) above, one can see the
new value before it is recorded. If the value
needs changing, use the PROGRAM push but-
ton to alter the value.
When the new value has been corrected, record
it in the memory of the relay module by pressing
the PROGRAM and STEP push buttons simul-
taneously. At the moment the information en-
ters the memory, the green dashes flash once in
the display, i.e. 1 - - -.
Recording of the new value automatically initi-         PROGRAM
ates a return from the setting mode to the                         5s           1 1. 0 5
normal submenu. Without recording one can
leave the setting mode any time by pressing the
PROGRAM push button for about five sec-
onds, until the green display digits stop flashing.
If the second setting is to be altered, enter            RESET
submenu position 2 of the setting I&gt; by pressing
the STEP push button for approx. one second.
1s            2 1. 0 0
The flashing position indicator 1 will then be
replaced by a flashing number 2 which indicates
that the setting shown on the display is the
second setting for I&gt;.
Enter the setting mode as in step c) and proceed      until the first digit is switched off. The LED still
in the same way. After recording of the re-           shows that one is in the I&gt; position and the
quested values return to the main menu is             display shows the new setting value currently in
obtained by pressing the STEP push button             use by the relay module.
Example 2   Operation in the setting mode. Manual setting          SGF1/1and SGF1/3 are to be set in position 1.
of the main setting of the checksum for the            This means that a checksum of 005 should be
switchgroup SGF1 of a relay module. The initial        the final result.
value for the checksum is 000 and the switches
a)                                                        RESET
Press push button STEP until the LED close to                     nx1s
the SGF symbol is lit and the checksum appears
b)                                                       PROGRAM
Enter the submenu to get the main checksum of                      1s
SGF1 by pressing the PROGRAM push button
for more than one second and then releasing it.
The red display now shows a flashing number 1
green digits show the checksum.
Enter the setting mode by pressing the PRO-              PROGRAM
GRAM push button for five seconds until the                        5s
display starts flashing.                                                    1 0 0 0
Press the PROGRAM push button once again                 PROGRAM
to get the first switch position. The first digit of               1x
the display now shows the switch number. The
position of the switch is shown by the rightmost
The switch position can now be toggled be-                RESET
tween 1 and 0 by means of the STEP push
button and it is left in the requested position 1.                 1x       1 1                1
When switch number 1 is in the requested
position, switch number 2 is called up by press-         PROGRAM
ing the PROGRAM push button for one sec-
ond. As in step e), the switch position can be
1s       1 2                0
altered by using the STEP push button. As the
desired setting for SGF1/2 is 0 the switch is left
in the 0 position.
Switch SGF1/3 is called up as in step f) by
pressing the PROGRAM push button for about
1s       1 3                0
h)                                                    RESET
The switch position is altered to the desired                  1x
position 1 by pressing the STEP push button                           1 3   1
i)                                                   PROGRAM
Using the same procedure the switches SGF 1/                   5x1s
4...8 are called up and, according to the exam-
ple, left in position 0.
In the final setting mode position, correspond-
ing to step c), the checksum based on the set                         1 0 0 5
switch positions is shown.
If the correct checksum has been obtained, it is          RESET
recorded in the memory by pressing the push
buttons PROGRAM and STEP simultaneously.
At the moment the information enters the                              1 - - -
memory, the green dashes flash in the display,
i.e.1 - - -. If the checksum is incorrect, the
setting of the separate switches is repeated using
the PROGRAM and STEP push buttons start-
ing from step d).
Recording the new value automatically initiates      PROGRAM
a return from the setting mode to the normal                   5s
menu. Without recording one can leave the
setting mode any time by pressing the PRO-
GRAM push button for about five seconds,
until the green display digits stop flashing.
After recording the desired values return to the
main menu is obtained by pressing the STEP            RESET
push button until the first digit is turned off.
The LED indicator SGF still shows that one is                           0 0 5
in the SGF position and that the display shows
the new checksum for SGF1 currently in use by
the relay module.
Recorded      The parameter values measured at the moment            Submenu 2 of register A contains a bus commu-
information   when a fault occurs or at the trip instant are         nication monitor for the SPAbus. If the protec-
recorded in the registers. The recorded data,          tion relay, which contains the relay module, is
except for some parameters, are set to zero by         linked to a system including a contol data
pressing the push buttons STEP and PRO-                communicatoe, for instance SRIO 1000M and
GRAM simultaneously. The data in normal                the data communication system is operating,
registers are erased if the auxiliary voltage supply   the counter reading of the monitor will be zero.
to the relay is interrupted, only the set values and   Otherwise the digits 1...255 are continuously
certain other essential parameters are maintained      scrolling in the monitor.
in non-volatile registers during a voltage failure.
Submenu 3 contains the password required for
The number of registers varies with different          changing the remote settings. The address code,
relay module types. The functions of the regis-        the data transfer rate of the serial communica-
ters are illustrated in the descriptions of the        tion and the password can be set manually or via
different relay modules. Additionally, the sys-        the serial communication bus. For manual set-
tem front panel of the relay contains a simplified     ting see example 1.
list of the data recorded by the various relay
modules of the protection relay.                       The default value is 001 for the address code, 9.6
kilobaud for the data transfer rate and 001 for
All D type relay modules are provided with two         the password.
general registers: register 0 and register A.
In order to secure the setting values, all settings
Register 0 contains, in coded form, the informa-       are recorded in two separate memory banks
tion about e.g. external blocking signals, status      within the non-volatile memory. Each bank is
information and other signals. The codes are           complete with its own checksum test to verify
explained in the manuals of the different relay        the condition of the memory contents. If, for
modules.                                               some reason, the contents of one bank is
disturbed, all settings are taken from the other
Register A contains the address code of the relay      bank and the contents from here is transferred to
modul which is reqiured by the serial communi-         the faulty memory region, all while the relay is
cation system.                                         in full operation condition. If both memory
banks are simultaneously damaged the relay will
Submenu 1 of register A contains the data trans-       be be set out of operation, and an alarm signal
fer rate value, expressed in kilobaud, of the serial   will be given over the serial port and the IRF
communication.                                         output relay
Trip test function   Register 0 also provides access to a trip test                                                        The selected starting or tripping is activated by
function, which allows the output signals of the                                                      simultaneous pressing of the push buttons
relay module to be activated one by one. If the                                                       STEP and PROGRAM. The signal remains
auxiliary relay module of the protection assem-                                                       activated as long as the two push butttons are
bly is in place, the auxiliary relays then will                                                       pressed. The effect on the output relays depends
operate one by one during the testing.                                                                on the configuration of the output relay matrix
When pressing the PROGRAM push button
for about five seconds, the green digits to the                                                       The self-supervision output is activated by press-
right start flashing indicating that the relay                                                        ing the STEP push button 1 second when no
module is in the test position. The indicators of                                                     setting indicator is flashing. The IRF output is
the settings indicate by flashing which output                                                        activated in about 1 second after pressing of the
signal can be activated. The required output                                                          STEP push button.
function is selected by pressing the PROGRAM
push button for about one second.
The signals are selected in the order illustrated in
The indicators of the setting quantities refer to                                                     Fig. 4.
the following output signals:
Setting I&gt;                       Starting of stage I&gt;
Setting t&gt;                       Tripping of stage I&gt;
Setting I&gt;&gt;                      Starting of stage I&gt;&gt;
Setting t&gt;&gt;                      Tripping of stage I&gt;&gt;
No indication                    Self-supervision IRF
IRF                                    I&gt; TRIP             I&#187; START             I&#187; TRIP             Io&gt; START             Io&gt; TRIP             Io&#187;START             Io&#187; TRIP
I&gt; START
PROGRAM          PROGRAM              PROGRAM              PROGRAM              PROGRAM             PROGRAM                                    PROGRAM              PROGRAM
I&gt;                                                                                         PROGRAM                                                        PROGRAM
5s               1s                   1s         t&gt;        1s                   1s                  1s                                         1s                   1s
I&#187;                                                   1s                                                             1s
Io&gt;                  to&gt;
Io&#187;
STEP              STEP &amp;               STEP &amp;               STEP &amp;               STEP &amp;              STEP &amp;                STEP &amp;               STEP &amp;               STEP &amp;
PROGRAM              PROGRAM              PROGRAM              PROGRAM             PROGRAM               PROGRAM              PROGRAM              PROGRAM
Fig. 5.Sequence order for the selection of output signals in the Trip test mode
If, for instance, the indicator of the setting t&gt; is                                                  Note!
flashing, and the push buttons STEP and PRO-                                                          The effect on the output relays then depends on
GRAM are being pressed, the trip signal from                                                          the configuration of the output relay matrix
the low-set overcurrent stage is activated. Re-                                                       switchgroups SGR 1...3.
turn to the main menu is possible at any stage of
the trip test sequence scheme, by pressing the
Example 3   Trip test function. Forced activation of the
Step forward on the display to register 0.
Press the PROGRAM push button for about                                                      3I &gt;
five seconds until the three green digits to the              I   L1   I   L2 I     L3   I o IRF
5s                                    t &gt; [s]
I o &gt;/ I n
c)                                                                     SGR
Hold down the STEP push button. After one              879B
second the red IRF indicator is lit and the IRF
output is activated. When the step push button
is released the IRF indicator is switched off and
the IRF output resets.
Press the PROGRAM push button for one                                                        3I &gt;
second and the indicator of the topmost setting               I   L1   I   L2   I   L3   I o IRF
If a start of the first stage is required, now press                   t &gt; [s]
the push-buttons PROGRAM and STEP simul-                               I &gt;&gt; / I n
taneously. The stage output will be activated and                      t &gt;&gt; [s]
the output relays will operate according to the                        I o &gt;/ I n
actual programming of the relay output                                 ko
switchgroups SGR.                                                      t o &gt;&gt;[s]
To proceed to the next position press the PRO-                                            3I &gt;
GRAM push button for about 1 second until                  I   L1   I   L2 I     L3   I o IRF
the indicator of the second setting starts flash-
ing.                                                                                             0 0 0 0
1s                                 k
Press the push buttons PROGRAM and STEP                                                   3I &gt;
simultaneously to activate tripping of stage 1             I   L1   I   L2   I   L3   I o IRF
(e.g. the I&gt; stage of the overcurrent module
SPCJ 4D29). The output relays will operate
according to the actual programming of the                                             RESET
relay switchgroups SGR. If the main trip relay                      t &gt; [s]
is operated the trip indicator of the measuring                     I &gt;&gt; / I n
module is lit.                                                      t &gt;&gt; [s]
RESET                                       t o &gt; [s]
STEP                                        ko
The starting and tripping of the remaining          It is possible to leave the trip test mode at any
stages are activated in the same way as the first   step of the sequence scheme by pressing the
stage above. The indicator of the corresponding     PROGRAM push button for about five seconds
setting starts flashing to indicate that the con-   until the three digits to the right stop flashing.
cerned stage can be activated by pressing the
STEP and PROGRAM buttons simultaneously.
For any forced stage operation, the output
relays will respond according to the setting of
the relay output switchgroups SGR. Any time
a certain stage is selected that is not wanted to
operate, pressing the PROGRAM button once
more will pass by this position and move to the
next one without carrying out any operation of
the selected stage.
Operation     A relay module is provided with a multiple of         indicator is reset by means of the RESET push
indication    separate operation stages, each with its own          button of the relay module. An unreset opera-
operation indicator shown on the display and a        tion indicator does not affect the function of the
common trip indicator on the lower part of the        protection relay module.
front plate of the relay module.
In certain cases the function of the operation
The starting of a relay stage is indicated with one   indicators may deviate from the above princi-
number which changes to another number when           ples. This is described in detail in the descrip-
the stage operates. The indicator remains glow-       tions of the separate modules.
ing although the operation stage resets. The
Fault codes   In addition to the protection functions the relay     the module. The fault code, which consists of a
module is provided with a self-supervision sys-       red figure &quot;1&quot; and a three digit green code
tem which continuously supervises the function        number, cannot be removed from the display by
of the microprocessor, its program execution          resetting. When a fault occurs, the fault code
and the electronics.                                  should be recorded and stated when service is
ordered. When in a fault mode, the normal
Shortly after the self-supervision system detects     relay menus are operative, i.e. all setting values
a permanent fault in the relay module, the red        and measured values can be accessed although
IRF indicator on the front panel is lit . At the      the relay operation is inhibited. The serial com-
same time the module puts forward a control           munication is also operative making it possible
signal to the output relay of the self-supervision    to access the relay information also from a
system of the protection relay.                       remote site. The internal relay fault code shown
on the display remains active until the internal
In most fault situations a fault code, indicating     fault possibly disappears and can also be re-
the nature of the fault, appears on the display of    motely read out as variable V 169.
Overcurrent and earth-fault relay module
I   L1   I   L2   I   L3   I o IRF
t o &gt; [s ]
Issued 96-06-17
Version B (replaces 34 SPCJ 8 EN1)                                                             Combined overcurrent
Data subject to change without notice                                                                        module
Description of function .................................................................................................. 3
Block diagram ................................................................................................................. 5
Front panel ..................................................................................................................... 6
Start and operation indicators ......................................................................................... 7
Settings ........................................................................................................................... 8
Selector switches ............................................................................................................. 9
Measured data .............................................................................................................. 13
Recorded information ................................................................................................... 14
Menu and register chart ................................................................................................ 16
Time/current characteristic ........................................................................................... 18
Technical data .............................................................................................................. 26
Serial communication parameters ................................................................................. 27
Fault codes.................................................................................................................... 34
Features                     Low-set phase overcurrent stage I&gt; with definite                          Six time/current curve sets at inverse time char-
time or inverse time characteristic                                       acteristic of the overcurrent stage I&gt; and the
earth-fault stage I0&gt;
High-set phase overcurrent stage I&gt;&gt; with in-
stantaneous function or definite time character-                          Digital display of measured and set values and
istic                                                                     data sets recorded at the moment of relay opera-
Low-set earth-fault stage I0&gt; with definite time
or inverse time characteristic                                            Parametrization of the module by push-buttons
on the front panel or via the serial port using a
High-set earth-fault stage I0&gt;&gt; with definite                             portable PC and a suitable software
Continuous hardware and software supervision
including auto-diagnosis
Description of      The phase overcurrent unit of the relay module       Note!
function            SPCJ 4D29 is designed for single-phase, two-         The operation of the low-set stage based on
phase or three-phase overcurrent protection. It      inverse time characteristic will be blocked by
Phase overcurrent   includes two overcurrent stages, i.e. a low-set      starting of the high-set stage. Then the operate
unit                overcurrent stage I&gt; and a high-set overcurrent      time of the overcurrent unit is determined by
stage I&gt;&gt;.                                           the set operate time of the high-set stage at heavy
The low-set or high-set phase overcurrent stage
starts if the current on one or several of the       The setting range of the operate time t&gt;&gt; of the
phases exceeds the set start current value of the    high-set phase overcurrent stage is 0.04...300 s.
stage concerned. When the stage starts it gen-
erates a start signal SS1 or TS1 and simultane-      The operate signal of the two overcurrent stages
ously the digital display on the front panel         is provided with a latching feature (switch
indicates starting. If the overcurrent situation     SGB/6) which means that the operate signal
lasts long enough to exceed the set operate          TS2 is kept high after an operation, although
time, the stage operates and generates a trip        the overcurrent stage resets. The latched TS2
signal TS2. At the same time the operation           signal is reset by pushing the RESET and PRO-
indicator is lit with red light. The red operation   GRAM push-buttons simultaneously or via the
indicator remains lit although the stage resets.     serial port using the command V101, see also
The indicator is reset by pushing the RESET          chapter &quot;Selector switches&quot;.
push-button. By proper configuration of the
output relay switchgroups an additional auxil-       The set start current value I&gt;&gt; of the high-set
iary trip signal TS1 can be obtained.                phase overcurrent stage can be doubled auto-
matically on connection of the protected object
The operation of the low-set phase overcurrent       to the network, i.e. at starting. In this way the
stage I&gt; or the high-set phase overcurrent stage     start current of the high-set phase overcurrent
I&gt;&gt; can be blocked by routing a blocking signal      stage can be given a lower value than the level of
BS to the unit. The blocking configuration is        the connection inrush current. The automatic
set with switchgroup SGB.                            doubling function is selected with switch SGF1/5.
The starting, which activates the doubling func-
The operation of the low-set phase overcurrent       tion, is defined as a situation where the phase
stage can be based on definite time or inverse       currents rise from a value below 0.12 x I&gt; to a
time characteristic. The operation characteris-      value exceeding 1.5 x I&gt; in less than 60 ms. The
tic is selected with the SGF1/1…3 switches.          function stops when the currents fall below 1.25
At definite time operation characteristic the        x I&gt;.
operate time t&gt; is set in seconds within the
range, 0.05...300 s. When the inverse time           The setting range of the start current of the high-
operation characteristic (IDMT) is selected,         set phase overcurrent stage is 0.5...40 x In.
four internationally standardized and two com-       When the high-set stage is given a start current
plementary time/current curves are available.        setting in the lower end of the setting range, the
The selector switches SGF1/1...3 are also used       relay module will contain two almost identical
for selecting the desired operation characteris-     overcurrent stages. This enables the overcurrent
tic.                                                 unit of the SPCJ 4D29 module to be used, for
example, in two-stage load shedding applica-
Note!                                                tions.
The maximum continuous current carrying
capacity of the energizing inputs is 4 x In,         The high-set phase overcurrent stage can be set
which must be observed when relay settings are       out of operation with switch SGF2/5. When the
calculated.                                          high-set stage is set out of operation the display
shows &quot;- - -&quot;, indicating that the start current
Note!                                                setting is infinite.
At inverse time characteristic the effective set-
ting range of the low-set overcurrent stage is
0.5…2.5 x In, although start current settings
within the range 2.5…5.0 x In can be set on the
relay. At inverse time characteristic any start
current setting above 2.5 x In of the low-set
stage will be regarded as being equal to 2.5 x In.
Earth-fault unit     The non-directional earth-fault unit of the relay     range, 0.05...300 s. When the inverse time
module SPCJ 4D29 is a single-pole earth-fault         operation characteristic (IDMT) is selected, four
unit. It contains two earth-fault stages, i.e. a      internationally standardized and two comple-
low-set earth-fault stage I0&gt; and a high-set earth-   mentary time/current curves are available. The
fault stage I0&gt;&gt;.                                     selector switches SGF1/ 6...8 are also used for
selecting the desired operation characteristic.
The low-set or high-set earth-fault stage starts,
if the measured current exceeds the set start         The setting range of the operate time t0&gt;&gt; of the
current value. When the stage starts it generates     high-set earth-fault stage is 0.05…300 s.
a start signal SS1 or TS1 and simultaneously the
digital display on the front panel indicates start-   Note!
ing. If the earth-fault situation lasts long enough   The operation of the low-set stage based on
to exceed the set operate time, the stage operates    inverse time characteristic will be blocked by
and generates a trip signal TS2. At the same time     starting of the high-set stage. Then the operate
the operation indicator TRIP is lit with red          time of the earth-fault unit is determined by the
light. The red operation indicator remains lit        set operate time of the high-set stage at heavy
although the stage resets. The indicator is reset     fault currents.
by pushing the RESET push-button. By proper
configuration of the output relay switchgroups        The operate signal of the two earth-fault stages
an additional auxiliary trip signal TS1 can be        is provided with a latching feature (switch SGB/7)
obtained.                                             which means that the operate signal TS2 is kept
high after an operation, although the earth-fault
The operation of the low-set earth-fault stage        stage resets. The TS2 signal is reset by pushing
I0&gt; or the high-set earth-fault stage I0&gt;&gt; can be     the RESET and PROGRAM push-buttons si-
blocked by routing a blocking signal BS to the        multaneously or via the serial port using the
earth-fault unit. The blocking configuration is       command V101, see chapter &quot;Selector switches&quot;,
set with switchgroup SGB.                             page 9.
The operation of the low-set earth-fault stage        The high-set earth-fault stage can be set out of
can be based on definite time or inverse time         operation with switch SGF2/6. When the high-
characteristic. The operation characteristic is       set stage is set out of operation the display shows
selected with the SGF/6…8 switches. At defi-          &quot;- - -&quot;, indicating that the start current setting is
nite time operation characteristic the operate        infinite.
time t0&gt; is directly set in seconds within the
Circuit breaker      The relay module features a circuit breaker           an upstream circuit breaker. The CBFP unit can
failure protection   failure protection (CBFP) unit. The CBFP unit         also be used for tripping via redundant trip
unit                 generates a trip signal via TS1 after a set operate   circuits of the same circuit breaker, if the circuit
time 0.1...1 s, following the main trip signal        breaker is provided with two trip coils. The
TS2, if the fault has not been cleared before the     circuit breaker failure protection unit is alerted/
set operate time has elapsed. The output contact      set out of operation with switch SGF1/4.
of the CBFP unit is normally used for tripping
Remote setting       The relay can be given two sets of setting values,    command V150 via the serial port, ii) with a
the main settings and the second settings. Switch-    command via the external control input BS or
ing between main settings and second settings         manually by changing a parameter in submenu
can be done in three different ways, i) with a        4 of register A.
50 ms       SGR3 / 2
I&gt;                              t&gt;, k      SGR2 / 2
SGF1 / 1                     SGR3 / 3
SGR1 / 3                                    RESET+
IL3                                 SGF1 / 2                                              SGB / 6
SGB / 1                                                   SGF2 / 7
SGF1 / 3
30 ms       SGR3 / 4
SGR2 / 3
t&gt;&gt;       SGR2 / 4
BS                                       SGF1 / 5                                                             SGF1 / 4
0.12 x I&gt;
0.1…1s
2 x I&gt;&gt;
60 ms                                                                                                    SS2
1.5 x I&gt;                   &amp;
SGR1 / 5
50 ms       SGR3 / 6
I &gt;                                       SGR2 / 5
0                           t0&gt;, k0
SGR2 / 6                                                                AR1
Io                                                              SGR1 / 6
SGB / 3                                                    SGR3 / 7
SGF1 / 6                                                                 RESET+
SGR1 / 7                 SGB / 7
SGF1 / 7                                                                             1               TS2
30 ms       SGR3 / 8
SGF1 / 8
SGR2 / 7                       1
I                               t &gt;&gt;
0&gt;&gt;                              0        SGR2 / 8
SGB / 5
Fig. 1. Block diagram for the combined overcurrent and earth-fault relay module SPCJ 4D29.
IL1, IL2, IL3      Energizing currents
I0                 Residual current
BS                 External control signal
SGF1…2             Selector switchgroup SGF for operational relay functions
SGB                Selector switchgroup SGB for special relay functions
SGR1...3           Selector switchgroups SGR for configuration of output relays
TS1                Start signal 1 or auxiliary trip signal configured with switchgroup SGR3
SS1                Start signal configured with switchgroup SGR1
SS2                Trip signal 1 configured with switchgroup SGR2
SS3                Trip signal 2 configured with switchgroup SGR2
TS2                Trip signal configured with switchgroup SGR1
AR1, AR2, AR3      Start signals to possible external optional auto-reclose relays
TRIP               Red operation (trip) indicator
All input and output signals of the relay module                             nals of a particular protection relay are shown in
are not necessarily wired to the terminals of a                              the signal diagram in the general part of the relay
particular relay. The signals wired to the termi-                            manual.
Indicators for the measured phase currents IL1, IL2, IL3                                 I   L1   I   L2   I   L3   I o IRF
and the residual current I0
Indicator for the start current of the I&gt; stage                                                   I &gt;/I n            STEP
Indicator for the operate time t&gt; or time multiplier k                                            t &gt; [s]
of the I&gt; stage
Indicator for the start current of the I&gt;&gt; stage
Indicator for the operate time of the I&gt;&gt; stage                                                   t &gt;&gt; [s]
Indicator for the start current of the I0&gt; stage                                                  I o &gt;/ I n
Indicator for the operate time t0&gt; or time multiplier k0                                          t o &gt; [s ]
of the I0&gt; stage                                                                                  ko
Indicator for the start current of the I0&gt;&gt; stage                                                 I o &gt;&gt; /I n
Indicator for the operate time of the I0&gt;&gt; stage                                                  t o &gt;&gt;[s]
Indicator for the checksum of switchgroups SGF1…2                                                 SGF
Indicator for the checksum of switchgroup SGB                                                     SGB
Indicator for the checksum of switchgroups SGR1...3                                               SGR
3I &gt;   Relay module symbol
Self-supervision alarm indicator
k                            Reset and display step push-button
SPCJ 4D29           Type designation of the module
Start and    Both overcurrent stages have their own start             has operated. The start or operation indicators
operation    indicators and operation indicators shown as             are reset by pushing the RESET push-button.
indicators   figures on the digital display. Further, all the         The function of the relay module is not affected
protection stages share a common red LED                 by an unreset indicator. If the starting of a stage
indicator marked &quot;TRIP&quot; which is located in              is short enough not to cause an operation of the
the lower right corner of the front panel and            relay, the start indication is normally self-reset
which is lit on operation of a stage.                    when the stage resets. By means of switches
SGF2/1…4 the start indicators can be configured
The figure on the display indicating starting or         for manual resetting. The following table shows
operation remains lit when the current stage             a guide to the start and trip indicators of the
resets, thus indicating which protection stage           relay module.
Indication      Explanation
1          I&gt; START           = the low-set stage I&gt; of the overcurrent unit has started
2          I&gt; TRIP            = the low-set stage I&gt; of the overcurrent unit has operated
3          I&gt;&gt; START          = the high-set stage I&gt;&gt; of the overcurrent unit has started
4          I&gt;&gt; TRIP           = the high-set stage I&gt;&gt; of the overcurrent unit has operated
5          I0&gt; START          = the low-set stage I0&gt; of the earth-fault unit has started
6          I0&gt; TRIP           = the low-set stage I0&gt; of the earth-fault unit has operated
7          I0&gt;&gt; START         = the high-set stage I0&gt;&gt; of the earth-fault unit has started
8          I0&gt;&gt; TRIP          = the high-set stage I0&gt;&gt; of the earth-fault unit has operated
9          CBFP               = the circuit breaker failure protection has operated
When one of the protection stages of the relay           The self-supervision alarm indicator IRF indi-
module operates, the indicators for the energiz-         cates, when lit, that the self-supervision system
ing current of the module show the faulty phase,         has detected a permanent internal relay fault.
i.e. in which phase(s) the current has exceeded          The indicator is lit with red light shortly after a
the set start value of the stage (so called phase        fault has been detected. At the same time the
fault indication). If, for instance, the operation       relay module generates a control signal to the
indicator &quot;2&quot; of the low-set stage is lit , as are the   output relay of the self-supervision system IRF.
indicators IL1 and IL2 also, the relay operation         Additionally, in most fault cases, an auto-diag-
has been caused by overcurrent on the L1 and L2          nostic fault code showing the nature of the fault
phases. The fault indications are reset by push-         appears on the display. The fault code, consists
ing the RESET push-button.                               of a red figure one (1) and a green code number.
When a fault code is obtained it should be
recorded for statistical and maintenance pur-
Settings   The setting values are shown by the right-most       symbol of the setting quantity shows the quan-
three digits of the display. When lit, the LED       tity currently being displayed.
indicators on the front panel adjacent to the
I&gt;/In     Start current of the I&gt; stage as a multiple of the rated current of the used energizing
input. Setting range 0.5...5.0 x In at definite time characteristic and 0.5…2.5 x In at
Note! At inverse time characteristic any setting above 2.5 x In will be regarded as being
equal to 2.5 x In.
t&gt;        Operate time of the I&gt; stage expressed in seconds, at definite time characteristic
(SGF1/1-2-3 = 0-0-0). Setting range 0.05...300 s.
k         Time multiplier of the I&gt; stage at inverse time characteristic. Setting range 0.05...1.00.
I&gt;&gt;/In    Start current of the I&gt;&gt; stage as a multiple of the rated current of the used energizing
input. Setting range 0.5...40.0 x In. Additionally the setting &quot;infinite&quot; (displayed as
n - - -) can be selected with switch SGF2/5, which means that the high-set stage I&gt;&gt;
t&gt;&gt;       Operate time of the I&gt;&gt; stage expressed in seconds. Setting range 0.04...300 s.
I0&gt;/In    Start current of the I0&gt; stage as a multiple of the rated current of the used energizing
input. Setting range 0.1...0.8 x In.
t0&gt;       Operate time of the I0&gt; stage, expressed in seconds, at definite time characteristic
(SGF1/6-7-8 = 0-0-0). Setting range 0.05...300 s.
k0        Time multiplier k0 of the I0&gt; stage at inverse time characteristic. Setting range
0.05...1.00.
I0&gt;&gt;/In   Start current of the I0&gt;&gt; stage as a multiple of the rated current of the used energizing
input. Setting range 0.1...10.0 x In. Additionally the setting &quot;infinite&quot; (displayed as
n - - -) can be selected with switch SGF2/6, which means that the earth-fault stage
I0&gt;&gt; is out of operation.
t0&gt;&gt;      Operate time of the I0&gt;&gt; stage expressed in seconds. Setting range 0.05...300 s.
Further, the checksums of switchgroups SGF1,         the first switchgroup. For further information,
SGB and SGR1 are shown on the display when           see chapter &quot;Menus and registers&quot;. An example
the indicators adjacent to the switchgroup sym-      of how the checksum can be calculated manu-
bols on the front panel are lit. The checksums       ally is given in manual &quot;General characteristics
for switchgroups SGF2, SGR2 and SGR3 are             of D type relay modules..
found in the submenus under the main menu of
Selector switches   Additional functions required in various appli-     groups are set. Under normal service conditions
cations are selected with switchgroups SGF,         only the checksums are shown. Switchgroups
SGB and SGR indicated on the front panel. The       SGF2, SGR2 and SGR3 are found in the sub-
numbering of the switches, 1...8, and the switch    menus of the main menus of switchgroups SGF
positions 0 and 1 are shown when the switch-        and SGR.
Function switch-
group SGF1           Switch     Function
SGF1/1     Switches SGF1/1...3 are used for selecting the characteristic of the low-set overcurrent
SGF1/2     stage I&gt;, i.e. definite time operation characteristic or inverse definite minimum time
SGF1/3     (IDMT) characteristic. At IDMT characteristic the switches are also used for selecting
the required current/time characteristic for the stage.
SGF1/1 SGF1/2 SGF1/3 Characteristic                Time or curve set
0          0         0      Definite time      0.05...300 s
1          0         0      IDMT               Extremely inverse
0          1         0      IDMT               Very inverse
1          1         0      IDMT               Normal inverse
0          0         1      IDMT               Long-time inverse
1          0         1      IDMT               RI-characteristic
0          1         1      IDMT               RXIDG-characteristic
1          1         1        ---              (Long-time inverse)
SGF1/4     Circuit breaker failure protection (CBFP).
When SGF1/4 =1 the trip signal TS2 will start a timer which will generates a delayed
operate signal via TS1, if the fault has not been cleared before the operate time has
When switch SGF1/4 = 0 the circuit breaker failure protection is out of operation.
SGF1/5     Automatic doubling of the set start current of the high-set overcurrent stage I&gt;&gt; when
the protected object is energized.
When SGF1/5 = 0, no doubling of the start current setting of stage I&gt;&gt; is obtained.
When SGF1/5 = 1, the start current setting of stage I&gt;&gt; doubles automatically.
The doubling feature makes it possible to give the high-set stage a setting value below
the connection inrush current level.
SGF1/6     Switches SGF1/6...8 are used for selecting the operation characteristic of the low-set
SGF1/7     earth-fault stage I0&gt;, i.e. definite time characteristic or inverse definite minimum time
SGF1/8     (IDMT) characteristic. At inverse definite minimum time characteristic the switches
are also used for selecting the current/time characteristic of the stage.
SGF1/6 SGF1/7 SGF1/8 Characteristic                Time or curve
0          0         0      Definite time      0.05…300 s
1          1         1      IDMT               Not in use (long-time inverse)
On delivery from the factory all switches SGF1
are set at zero, i.e. the checksum for SGF1 is 0.
group SGF2          Switch     Function
SGF2/1     Switches SGF2/1...4 are used for selecting the operation characteristic of the start
SGF2/2     indicators of the different stages. When the switches are in position 0 the start signals
SGF2/3     are all automatically reset when the fault is cleared. To give the indicator of a stage the
SGF2/4     hand reset mode of operation, the corresponding switch is set in position 1:
SGF2/1 = 1 equals manual reset mode for the start indication of stage I&gt;
SGF2/2 = 1 equals manual reset mode for the start indication of stage I&gt;&gt;
SGF2/3 = 1 equals manual reset mode for the start indication of stage I0&gt;
SGF2/4 = 1 equals manual reset mode for the start indication of stage I0&gt;&gt;
SGF2/5     Operation of the high-set phase overcurrent stage I&gt;&gt;.
When SGF2/5 = 0 the high-set stage I&gt;&gt; is alerted
When SGF2/5 = 1 the high-set stage I&gt;&gt; is out of operation and the display shows
&quot;- - -&quot;
SGF2/6     Operation of the high-set earth-fault stage I0&gt;&gt;.
When SGF2/6 = 0 the high-set stage I0&gt;&gt; is alerted
When SGF2/6 = 1 the high-set stage I0&gt;&gt; is out of operation and the display shows
SGF2/7     Start signal of the high-set stage I&gt;&gt; to the auto-reclose signal output AR1.
When SGF2/7 = 1, the start signal of the I&gt;&gt; stage is routed to output AR1.
Note! Outputs AR1 and SS3 are interconnected and they always carry the same signal.
Therefore, if AR1 is used for starting auto-reclose functions, SS3 cannot be used for
When SGF2/7 =0, the start signal of the I&gt;&gt; stage is not routed to output AR1 nor
SS3. Thus the signal output SS3 is available for other purposes.
SGF2/8     Start signal of the low-set stage I0&gt; or high-set stage I0&gt;&gt; to auto-reclose signal output
When SGF2/8 = 0 the start signal from the I0&gt; stage is routed to output AR3
When SGF2/8 = 1 the start signal from the I0&gt;&gt; stage is routed to output AR3
When the relay is delivered from the factory the
SGF2 switches are set at zero, i.e. the checksum
for SGF2 is 0.
Blocking or control
signal configuration    Switch     Function
switchgroup SGB
SGB/1      Switches SGB/1...4 are used for routing an external blocking signal BS to one or more
SGB/2      of the protection stages of the relay module. When the switches all are in position 0
SGB/3      no stage is blocked.
When SGB/1 = 1 the I&gt; stage is blocked by the external control signal BS
When SGB/2 = 1 the I&gt;&gt; stage is blocked by the external control signal BS
When SGB/3 = 1 the I0&gt; stage is blocked by the external control signal BS
When SGB/4 = 1 the I0&gt;&gt; stage is blocked by the external control signal BS
SGB/5      Selection of main settings or second settings with an external control signal BS or via
the serial interface using command V150.
When SGB/5 = 0 the settings can be controlled via the serial port but not via the
external control input BS
When SGB/5 = 1, the settings can be controlled via the external control input. The
main values are enforced when the control input is not energized and the second
settings are enforced when the control input is energized.
Note! When the application includes switching between main and second settings,
it should be noted that switch SGB/5 must have the same position in the main set of
settings and the second set of settings. Otherwise a conflict situation might occur when
the settings are switched by external control or via the serial port.
SGB/6      Latching of the trip signal TS2 of the phase overcurrent unit.
When SGB/6 = 0 the trip signal returns to its initial state (= the output relay drops
off), when the energizing signal causing the operation falls below the set start current.
When SGB/6 = 1 the trip signal is latched (= the output relay remains picked up after
operation), although the energizing signal falls below the start current. The trip signal
is to be manually reset by pushing the push-buttons RESET and PROGRAM
simultaneously. 1)
SGB/7      Latching of the trip signal TS2 of the earth-fault unit.
When SGB/7 = 0 the trip signal returns to its initial state (= the output relay drops
off), when the measuring signal causing the operation falls below the set start current.
When SGB/7 = 1 the trip signal is latched (= the output relay remains picked up after
SGB/8      Remote resetting of a latched output relay and memorized values.
When the output TS2 has been given the latching mode with switch SGB/6 or SGB/7,
a remote reset can be performed using the external control input BS, when switch
SGB/8 =1.
When the relay is delivered from the factory the    1)   From the program versions 037F or 056A
SGB switches are set at zero, i.e. the checksum          and later versions an additional feature has
for SGB is 0.                                            been incorporated into the relay module SPCJ
4D29. When the latching function is used
the latched output can be reset by pushing the
PROGRAM button alone, in which case the
stored information of the module is not erased.
Output relay matrix
switchgroups SGR1,    SGR1     The switches of switchgroup SGR1 are used to select the start and operate signals
SGR2 and SGR3                  to be routed to outputs SS1 and TS2.
SGR2     The switches of switchgroup SGR2 are used for routing the operate signals of the
protection stages to the outputs SS2 and SS3.
SGR3     The switches of switchgroup SGR3 are used to route the start and operate signals to
the start or auxiliary trip output TS1. Note! If the circuit breaker failure protection
has been taken in use with switch SGF1/4, it will also occupy the TS1 output.
Switch   Function                                                         Factory    Checksum
number                                                                    setting    value
SGR1/1 When SGR1/1 = 1, the start signal of the I&gt; stage is
routed to SS1                                                         1             1
SGR1/2 When SGR1/2 = 1, the operate signal of the I&gt; stage
is routed to TS2                                                      1             2
SGR1/3 When SGR1/3 = 1, the start signal of the I&gt;&gt; stage is
routed to SS1                                                         0             4
SGR1/4 When SGR1/4 = 1, the operate signal of the I&gt;&gt; stage
is routed to TS2                                                      1             8
SGR1/5 When SGR1/5 = 1, the start signal of the I0&gt; stage
is routed to SS1                                                      0           16
SGR1/6 When SGR1/6 = 1, the operate signal of the I0&gt; stage
is routed to TS2                                                      1           32
SGR1/7 When SGR1/7 = 1, the staring signal of the I0&gt;&gt; stage
is routed to SS1                                                      0           64
SGR1/8 When SGR1/8 = 1, the operate signal of the I0&gt;&gt; stage
is routed to TS2                                                      1          128
Checksum for the factory settings of switchgroup SGR1                          171
SGR2/1 When SGR2/1 = 1, the operate signal of the I&gt; stage
is routed to SS2                                                      1             1
SGR2/2 When SGR2/2 = 1, the operate signal of the I&gt; stage
is routed to SS3                                                      0             2
SGR2/3 When SGR2/3 = 1, the operate signal of the I&gt;&gt; stage
is routed to SS2                                                      1             4
SGR2/4 When SGR2/4 = 1, the operate signal of the I&gt;&gt; stage
is routed to SS3                                                      0             8
SGR2/5 When SGR2/5 = 1, the operate signal of the I0&gt; stage
is routed to SS2                                                      0           16
SGR2/6 When SGR2/6 = 1, the operate signal of the I0&gt; stage
is routed to SS3                                                      1           32
SGR2/7 When SGR2/7 = 1, the operate signal of the I0&gt;&gt; stage
is routed to SS2                                                      0           64
SGR2/8 When SGR2/8 = 1, the operate signal of the I0&gt;&gt; stage
is routed to SS3                                                      1          128
Checksum for the factory settings of switchgroup SGR2                          165
Switch      Function                                                       Factory   Checksum
number                                                                     setting   value
SGR3/1 When SGR3/1 = 1, the start signal of the I&gt; stage
is routed to TS1                                                       0              1
SGR3/2 When SGR3/2 = 1, the trip signal of the I&gt; stage
is routed to TS1                                                       0              2
SGR3/3 When SGR3/3 = 1, the start signal of the I&gt;&gt; stage
is routed to TS1                                                       0              4
SGR3/4 When SGR3/4 = 1, the trip signal of the I&gt;&gt; stage
is routed to TS1                                                       0              8
SGR3/5 When SGR3/5 = 1, the start signal of the I0&gt; stage
is routed to TS1                                                       0              16
SGR3/6 When SGR3/6 = 1, the trip signal of the I0&gt; stage
is routed to TS1                                                       0              32
SGR3/7 When SGR3/7 = 1, the start signal of the I0&gt;&gt; stage
is routed to TS1                                                       0              64
SGR3/8 When SGR3/8 = 1, the trip signal of the I0&gt;&gt; stage
is routed to TS1                                                       0         128
Checksum for the factory settings of switchgroup SGR3                             0
Measured data   The measured current values are shown by the        displayed at the present time is indicated by a
three right-most digits of the display. The value   LED indicator on the front panel.
Indicator    Measured data
IL1      Line current on phase L1 as a multiple of the rated current In of the used
energizing input (0…63 x In).
IL2      Line current on phase L2 as a multiple of the rated current In of the used
IL3      Line current on phase L3 as a multiple of the rated current In of the used
I0       Residual current as a multiple of the rated current In of the used energizing
input (0…21 x In).
Recorded      The left-most red digit shows the address of the     The // symbol in the text indicates that the item
information   register and the right-most three digits the re-     following the symbol is found in a submenu.
corded value.
Register/ Recorded information
1      Phase current IL1 displayed as a multiple of the rated current of the used input of the
overcurrent unit. If the overcurrent unit starts or operates, the current value at the
moment of operation is recorded in a memory stack. Any new operation adds a new
value to the stack and moves the old values one place forward. Five values are
memorized. If a sixth value is recorded, the oldest value is lost.
2      Phase current IL2 measured as a multiple of the rated current of the used input of the
3      Phase current IL3 measured as a multiple of the rated current of the used input of the
4      Maximum demand current value for a period of 15 minutes expressed in multiples
of the rated current In of the used energizing input and based on the highest phase
current. // Highest maximum demand current value recorded after the last relay
5      Duration of the last start situation of the I&gt; stage as a percentage of the set operate
time t&gt; or at IDMT characteristic the calculated operate time. At any new start the
time counter starts from zero. Five start times are memorized. If a sixth start occurs
the oldest start time is lost. When the concerned stage has operated, the counter
reading is 100. // Number of starts of the low-set overcurrent stage I&gt;, n (I&gt;) =
0...255.
6      Duration of the last start situation of the I&gt;&gt; stage as a percentage of the set operate
time t&gt;&gt;. At any new start the time counter starts from zero. Five start times are
memorized. If a sixth start occurs the oldest start time is lost. When the concerned
stage has operated, the counter reading is 100. // Number of starts of the high-set
overcurrent stage I&gt;&gt;, n (I&gt;&gt;) = 0...255.
7      Neutral current I0 displayed as a multiple of the rated current of the used energizing
input of the earth-fault unit. If the earth-fault unit starts or operates, the current
value at the moment of operation is recorded in a memory stack. Any new operation
adds a new value to the memory stack and moves the old values forward one place.
Five values are memorized - if a sixth value is recorded, the oldest value will be lost.
8      Duration of the latest start situation of stage I0&gt; as a percentage of the set operate time
t0&gt; or in IDMT operation characteristic the calculated operate time. At any new start
the time counter starts from zero. Five start times are memorized. If a sixth start is
recorded the oldest start time is lost. When the concerned stage has operated, the
counter reading is 100. // Number of starts of the high-set overcurrent stage I&gt;&gt;, n
(I&gt;&gt;) = 0...255.
9      Duration of the latest start situation of stage I0&gt;&gt; as a percentage of the set operate
time t0&gt;&gt;. At any new start the time counter starts from zero. Five start times are
memorized. If a sixth start is recorded the oldest start time will be lost. When the
concerned stage has operated, the counter reading is 100. // Number of starts of the
high-set earth-fault stage I0&gt;&gt;, n (I0&gt;&gt;) = 0...255.
0        Display of blocking signals and other external control signals.
The right-most digit indicates the state of the blocking input of the module. The
following states may be indicated:
0 = no blocking signal
1 = blocking or control signal BS active.
The function of the external control signal on the relay unit is determined by the
settings of switchgroup SGB
From register &quot;0&quot; the TEST mode can be reached. In the TEST mode the start and
trip signals of the relay module can be activated one by one. For further details see
description &quot;General characteristics of D type relay modules&quot;.
A        The address code of the protection relay module, required by the serial communi-
cation system. The address code is set at zero when no serial communication is to be
used. The submenus of this register include the following settings or functions.
- 1st submenu. Selection of data transfer rate for the communication system.
Selectable values 4800 Bd or 9600 Bd.
- 2nd submenu. Bus communication monitor. If the relay is connected to bus
communication unit, e.g. type SRIO 1000M, and the communication system is
working properly, the monitor shows the value zero. When the communication
system is out of operation the values 0…255 scroll in the monitor.
- 3rd submenu. Password for allowing remote changing of setting values. The
password must always be given via the serial port.
- 4th submenu. Selection of main settings versus second settings.
- 5th submenu. Setting of the operate time of the circuit breaker failure protection
-        Display dark. By pushing the STEP push-button the beginning of the display
sequence is reached.
Registers 1...9 are erased by pushing the RESET        tion system, the password and the status of the
and PROGRAM push-buttons simultaneously.               main/second setting bank switch are not erased
The contents of the registers are also erased if the   by a voltage failure. Instructions for setting the
auxiliary power supply of the module is inter-         address and the data transfer rate are given in
rupted. The address code of the relay module,          manual &quot;General characteristics of D type relay
the data transfer rate of the serial communica-        modules&quot;.
REV. STEP 0.5 s                             FWD. STEP 1 s
1    Main setting                           2     Second setting
Actual start value I&gt;                         value for I&gt;                                 value for I&gt;
Actual operate time t&gt; or                1    Main setting                           2     Second setting
multiplier k for stage I&gt;                     value for t&gt; or k                            value for t&gt; or k
Actual start value I&gt;&gt;                   1    Main setting                           2     Second setting
value for I&gt;&gt;                                value for I&gt;&gt;
Actual operate time t&gt;&gt;                  1    Main setting                           2     Second setting
of stage I&gt;&gt;                                  value for t&gt;&gt;                                value for t&gt;&gt;
Actual start value Io&gt;                   1    Main setting                           2     Second setting
value for Io&gt;                                value for Io&gt;
P            Actual operate time to&gt;                  1    Main setting                           2     Second setting
or multiplier ko                              value for to&gt; or ko                          value for to&gt; or ko
M       Actual start value Io&gt;&gt;
value for Io&gt;&gt;                               value for Io&gt;&gt;
N       Actual operate time to&gt;&gt;                 1    Main setting                           2     Second setting
value for to&gt;&gt;                               value for to&gt;&gt;
Actual setting of functional             1 Main setting of                           2     Main setting of
switchgroup SGF1                           SGF1 checksum                                   SGF2 checksum
Actual setting of blocking               1    Main setting of                        2     Second setting of
switchgroup SGB                               SGB checksum                                 SGB checksum
Actual setting of relay                  1    Main setting of                        2     Main setting of
S            switchgroup SGR1                              SGR1 checksum                                SGR2 checksum
1   Latest memorized, event (n)              1 Event (n-1)                               2 Event (n-2)
value of phase L1                          value of phase L1                           value of phase L1              1
Latest memorized, event (n)              1 Event (n-1)                               2     Event (n-2)
value of phase L2                          value of phase L2                               value of phase L2          2
value of phase L3                          value of phase L3                               value of phase L3          3
5   Duration of event (n)                    1 Duration of event (n-1)                   2 Duration of event (n-2)
starting of stage I&gt;                       starting of stage I&gt;                        starting of stage I&gt;           5
Duration of event (n)                    1 Duration of event (n-1)                   2     Duration of event (n-2)
starting of stage I&gt;&gt;                      starting of stage I&gt;&gt;                           starting of stage I&gt;&gt;      6
7                                                                                              value of current Io
value of neutral current Io                value of current Io                                                        7
starting of stage Io&gt;                      starting of stage Io&gt;                           starting of stage Io&gt;      8
Duration of event (n)                    1    Duration of event (n-1)                2 Duration of event (n-2)
9   starting of stage Io&gt;&gt;                        starting of stage Io&gt;&gt;                   starting of stage Io&gt;&gt;
0   Status of external relay                                  I&gt;    I&gt;&amp;t&gt;   I&#187;   I&#187;&amp;t&#187;
blocking / control signal                0     000                                   Io&gt;    Io&gt;&amp;to&gt;   Io&#187;   Io&#187;&amp;to&#187;
Relay unit identification                1    Communication rate                     2     Loss of bus traffic time
A                                                 setting [Bd]                                 counter 0..255 s
address for communication                                                                                             A
The procedures for entering a submenu or a                    described in detail in the manual &quot;General char-
setting mode and the method of performing the                 acteristics of D type relay modules&quot;. A short
settings and the use of the TEST mode are                     form guide to the operations is shown below.
Desired step or setting operation                   Push-button                        Action
Forward step in main menu or submenu STEP                                              Push for more than 0.5 s
Rapid scan forward in main menu                     STEP                               Keep pushing
Reverse step in main menu or submenu                STEP                               Push less than about 0.5 s
Entering submenu from main menu                     PROGRAM                            Push for 1 s
(Active on release)
Entering or leaving setting mode                    PROGRAM                            Push for 5 s
Increasing value in setting mode                    STEP
Moving the cursor in setting mode                   PROGRAM                            Push for about 1 s
Storing a value in setting mode                     STEP&amp;PROGRAM                       Push simultaneously
Erasing of memorized values and                     STEP&amp;PROGRAM
resetting of latched output relays
Resetting of latched output relays                  PROGRAM                            Note! Display must be off
Note! All parameters which can be set in the setting mode are indicated with the symbol                                       .
3   Second setting of       4   Second setting of
SGF1 checksum               SGF2 checksum
3   Main setting of             Second setting of             5       Second setting of                       Second setting of
4                                                                             6
SGR3 checksum               SGR1 checksum                         SGR2 checksum                           SGR3 checksum
3   Event (n-3)             4   Event (n-4)
1            value of phase L1           value of phase L1
2            value of phase L2           value of phase L2
3   Event (n-3)                 Event (n-4)
value of phase L3           value of phase L3
Number of low-set I&gt;
3 Duration of event (n-3)   4
Duration of event (n-4)           5
starting of stage I&gt;          starting of stage I&gt;
Duration of event (n-4)           5 Number of high-set I&gt;&gt;
starting of stage I&gt;&gt;         starting of stage I&gt;&gt;               starts since latest reset
Event (n-3)                 Event (n-4)
value of current Io         value of current Io
Number of low-set earth-
3 Duration of event (n-3)   4 Duration of event (n-4)             5
fault starts since latest reset
8          starting of stage Io&gt;       starting of stage Io&gt;
Number of high-set earth-
starting of stage Io&gt;&gt;        starting of stage Io&gt;&gt;
Password for                Selection of main vs.                  Operating time for the
3                            4                                     5
altering settings           second setting                         CB-failure protection
Time/current     The operation of the low-set overcurrent stage        When IDMT characteristic has been selected,
characteristic   I&gt; and the low-set earth-fault stage I0&gt; is based     the operate time of the stage will be a function
on definite time or inverse time characteristic, as   of the current; the higher the current, the shorter
selected by the user. The operation characteris-      the operate time.The stage includes six time/
tic is selected with switches 1...3 of switchgroup    current curve sets - four according to the BS 142
SGF1 for the overcurrent stage I&gt; and with            and IEC 255 standards and two special curve
switches SGF1/6...8 for the earth-fault stage I0&gt;     sets, named RI type and RXIDG type, accord-
(see chapter &quot;Selector switches&quot;, page 7).            ing to ABB standards.
IDMT             Four standard curves named extremely inverse,         The slope of the time/current curve sets is deter-
characteristic   very inverse, normal inverse and long- time           mined by the constants α and β as follows:
inverse are available. The relationship between
current and time complies with the BS 142.1966          Slope of the time/           α             β
and IEC 255-4 standards and can be expressed            current curve set
Normal inverse             0.02         0.14
Very inverse               1.0         13.5
t [s] =                                                 Extremely inverse          2.0         80.0
I α -1
Long-time inverse          1.0        120.0
where                                                 According to the standard BS 142.1966 the
t = operate time in seconds                           normal current range is defined as 2...20 times
k = time multiplier                                   the set start current. Additionally the relay must
I = measured current value                            start at the latest when the current exceeds 1.3
I&gt; = set start current value                          times the set start current, when the time/
current characteristic is normal inverse, very
The relay includes four time/current curve sets       inverse or extremely inverse. At long-time in-
according to BS 142.1966 and IEC 255-4.               verse characteristic, the normal range is 2...7
times the set start current and the relay must
start when the current exceeds 1.1 times the
The following requirements with regard to op-
erate time tolerances are specified in the stand-
ard (E denotes accuracy in per cent, - = not
I/I&gt;       Normal inv.               Very inv.            Extremely inv.           Long-time inv.
2            2.22 E                   2.34 E                  2.44 E                    2.34 E
5            1.13 E                   1.26 E                  1.48 E                    1.26 E
7               -                        -                       -                      1.00 E
10            1.01 E                   1.01 E                  1.02 E                       -
20            1.00 E                   1.00 E                  1.00 E                       -
In the defined normal current ranges, the in-         The time/current curves specified in the BS-
verse-time stages of the overcurrent and earth-       standards are illustrated in Fig. 3, 4, 5 and 6.
fault unit SPCJ 4D29 comply with the toler-
ances of class 5 for all time/current curves.
RI-type          The RI-type characteristic is a special character-   where
characteristic   istic used mainly in combination with existing       t = operate time in seconds
mechanical relays. The characteristic is based on    k = time multiplier
the following mathematical expression:               I = measured phase current
I&gt; = set start current
t [s] =           k
I&gt;                       The graph of the characteristic is shown in
0.339 - 0.236 x
I                        Fig.7.
RXIDG-type       The RXIDG-type characteristic is a special           The characteristic is based on the following
characteristic   characteristic used mainly for earth-fault pro-      mathematical expression:
tection, where a high degree of selectivity is
needed also for high-resistance faults. With this
characteristic, the protection relay need not to
t [s] = 5.8 - 1.35 x loge   ( k xI I&gt; )
be directional and the scheme can operate with-      where
out a pilot communication.                           t = operate time in seconds
I = measured phase current
The graph of the characteristic is shown in Fig. 8.
Note!            If the set start current exceeds 2.5 x In, the       current setting above 2.5 x In of the low-set stage
maximum permitted continuous current carry-          will be regarded as being equal to 2.5 x In.
ing capacity of the energizing inputs (4 x In)
must be observed.                                    The operation of the low-set stage based on
inverse time characteristic will be blocked by
At inverse time characteristic the effective set-    starting of the high-set stage. Then the operate
ting range of the low-set overcurrent stage is       time of the overcurrent or earth-fault unit is
0.5…2.5 x In, although start current settings        determined by the set operate time of the high-
within the range 2.5…5.0 x In can be set on the      set stage at heavy fault currents.
0.2                                                1.0
0.1                                                0.4
0.08                                                0.3
1     2      3    4   5   6 7 8 9 10       20 I/I&gt;
0.8                                                   k
0.7                                                 1.0
0.5                                                 0.7
0.3                                                 0.4
0.09                                                 0.1
1       2     3    4   5   6 7 8 9 10       20 I/I&gt;
3                                                k
2                                             0.9
0.9                                                0.4
0.7                                                0.3
1   2      3   4   5   6 7 8 9 10       20 I/I&gt;
6                                                0.9
5                                                0.8
I/I&gt;
1       2      3   4   5   6   7 8 9 10     20
4                                                 k
3                                               1.0
2                                               0.7
0.9                                                  0.3
0.6                                                  0.2
0.3                                                  0.1
1    2     3    4   5   6 7 8 9 10        20 I/I&gt;
0.8                                                                    1.0
0.7                                                                     0.9
0.5                                                                     0.8
0.05         0.1        0.2   0.3   0.4 0.5
1      2      3      4   5   6 7 8 9 10         20      30      40 I/I&gt;
Technical data   Low-set overcurrent stage I&gt;
- definite time characteristic                   0.5...5.0 x In
- inverse time characteristic                    0.5…2.5 x In
Start time, typ.                                 50 ms
- operate time                                0.05...300 s
- Inverse time characteristic acc. to
BS 142 and IEC 255-4                          Extremely inverse
- special characteristic acc. to ABB standards   RI-type inverse
- time multiplier k                            0.05...1.00
Reset time, typ.                                 40 ms
Retardation time                                 &lt;30 ms
Drop-off/pick-up ratio, typ.                     0.96
Operate time accuracy at definite time
operation characteristic                         &#177;2 % of set value or &#177;25 ms
Operate time accuracy class E at inverse
time characteristic                              5
Operation accuracy                               &#177;3% of set value
High-set overcurrent stage I&gt;&gt;
Start current I&gt;&gt;                                0.5...40.0 x In or ∞, infinite
Start time, typ.                                 40 ms
Operate time                                     0.04...300 s
Drop-off/pick-up ratio, typ.                     0.98
Operate time accuracy                            &#177;2% of set value or &#177;25 ms
Low-set earth-fault stage I0&gt;
Start current I0&gt;                                0.1…0.8 x In
Start time, typ.                                 60 ms
- operate time                                 0.05...300 s
BS 142 and IEC 255-4                           Extremely inverse
- time multiplier k0                           0.05...1.00
High-set earth-fault stage I0&gt;&gt;
Start current I0&gt;&gt;                                            0.1...10.0 x In or ∞, infinite
Start time, typ.                                              40 ms
Operate time                                                  0.05...300 s
Reset time, typ.                                              40 ms
Drop-off/pick-up ratio, typ.                                  0.98
Operate time accuracy                                         &#177;2% of set value or &#177;25 ms
Operation accuracy                                            &#177;3% of set value
Serial          When the combined overcurrent and earth-            the procedure of a manual calculation of the
communication   fault relay module SPCJ 4D29 is connected to        checksum.
parameters      a data communication unit. e.g. SRIO 1000M,
over a fibre-optic SPA bus, the module will         The output signals are monitored by codes
Event codes     spontaneously generate event markings e.g. for      E17...E26 and these events can be included in or
a printer. The events are printed out in the        excluded from the event reporting by writing an
format: time, text and event code. The text can     event mask V157 to the module. The event
be defined and written by the user into the         mask is a binary number coded to a decimal
communication unit.                                 number. The event codes E17...E26 are repre-
sented by the numbers 1, 2, 4...512. An event
The events coded E1...E16 can be included in        mask is formed by multiplying the above num-
or excluded from the event reporting by writing     bers either by 0, event not included in reporting
an event mask V155 for the overcurrent events       or 1, event included in reporting and by adding
and V156 for earth-fault events to the module       the numbers received. Check for the procedure
over the SPA bus. The event masks are binary        of a manual calculation of the checksum.
numbers coded to decimal numbers. The event
codes E1...E8 are represented by the numbers 1,     The event mask V157 may have a value within
2, 4...128. An event mask is formed by multiply-    the range 0...1024. The default value of the
ing the above numbers either by 0, event not        combined overcurrent and earth-fault relay
included in reporting, or 1, event included in      module SPCJ 4D29 is 768 which means that
reporting and by adding the numbers received.       only the operations are included in the report-
Check for the procedure of a manual calculation     ing.
Codes E50...E54 and the events represented by
The event masks V155 and V156 may have a            these cannot be excluded from the reporting.
value within the range 0...255. The default
value of the combined overcurrent and earth-        More information about the serial communica-
fault relay module SPCJ 4D29 is 85 both for         tion over the SPA bus can be found in the
overcurrent and earth-fault events, which means     manual &quot;SPA bus communication protocol&quot;,
that all start and operate events are included in   code No 34 SPACOM 2 EN1.
the reporting, but not the resetting. Check for
Event codes of the combined overcurrent and earth-fault relay module SPCJ 4D29:
Code     Event                                                    Weight factor    Default value
E1       Starting of stage I&gt;                                            1                1
E2       Resetting of starting of stage I&gt;                               2                0
E3       Operation of stage I&gt;                                           4                1
E4       Resetting of operation of stage I&gt;                              8                0
E5       Starting of stage I&gt;&gt;                                          16                1
E6       Resetting of starting of stage I&gt;&gt;                             32                0
E7       Operation of stage I&gt;&gt;                                         64                1
E8       Resetting of operation of stage I&gt;&gt;                           128                0
Default checksum for mask V155                                                  85
Code   Event                                          Weight factor   Default value
E9     Starting of stage I0&gt;                                1               1
E10    Resetting of starting of stage I0&gt;                   2               0
E11    Operation of stage I0&gt;                               4               1
E12    Resetting of operation of stage I0&gt;                  8               0
E13    Starting of I0&gt;&gt; stage                              16               1
E14    Resetting of starting of stage I0&gt;&gt;                 32               0
E15    Operation of stage I0&gt;&gt;                             64               1
E16    Resetting of operation of stage I0&gt;&gt;               128               0
Default checksum for mask V156                                      85
E17    Output signal TS1 activated                          1               0
E18    Output signal TS1 reset                              2               0
E19    Output signal SS1 activated                          4               0
E20    Output signal SS1 reset                              8               0
E21    Output signal SS2 activated                         16               0
E22    Output signal SS2 reset                             32               0
E23    Output signal SS3 activated                         64               0
E24    Output signal SS3 reset                            128               0
E25    Output signal TS2 activated                        256               1
E26    Output signal TS2 reset                            512               1
Default checksum for mask V157                                    768
E50    Restarting                                            *              -
E51    Overflow of event register                            *              -
E52    Temporary interruption in data communication          *              -
E53    No response from the module over the data
communication                                         *              -
E54    The module responds again over the data
0     not included in the event reporting
1     included in the event reporting
*     no code number
-     cannot be programmed
The event codes E52-E54 are generated by the
data communication unit (SACO 100M, SRIO
500M, SRIO 1000M, etc.)
Data to be trans-       In addition to the spontaneous data transfer the   All the data are available in channel 0.
ferred via the fibre-   SPA bus allows reading of all input values (I-
optic serial bus        values), setting values (S-values), information    R = data to be read from the unit
recorded in the memory (V-values), and some        W = data to be written to the unit
other data. Further, part of the data can be       (P) = writing enabled by password
altered by commands given over the SPA bus.
Data                                       Code          Data          Values
Current on phase L1                        I1            R             0...63 x In
Current on phase L2                        I2            R             0...63 x In
Current on phase L3                        I3            R             0...63 x In
Neutral current                            I4            R             0...21 x In
Blocking or control signal                 I5            R             0 = no blocking
1 = external blocking or
control signal active
Starting of stage I&gt;                       O1            R             0 = I&gt; stage not started
1 = I&gt; stage started
Operation of stage I&gt;                      O2            R             0 = I&gt; stage not tripped
1 = I&gt; stage tripped
Starting of stage I&gt;&gt;                      O3            R             0 = I&gt;&gt; stage not started
1 = I&gt;&gt; stage started
Operation of stage I&gt;&gt;                     O4            R             0 = I&gt;&gt; stage not tripped
1 = I&gt;&gt; stage tripped
Starting of stage I0&gt;                      O5            R             0 = I0&gt; stage not started
1 = I0&gt; stage started
Operation of stage I0&gt;                     O6            R             0 = I0&gt; stage not tripped
1 = I0&gt; stage tripped
Starting of stage I0&gt;&gt;                     O7            R             0 = I0&gt;&gt; stage not started
1 = I0&gt;&gt; stage started
Operation of stage I0&gt;&gt;                    O8            R             0 = I0&gt;&gt; stage not tripped
1 = I0&gt;&gt; stage tripped
Signal START1 TS1                          O9            R, W (P)      0 = signal not active
1 = signal active
Signal START2 SS1                          O10           R, W (P)      0 = signal not active
Signal ALARM1 SS2                          O11           R, W (P)      0 = signal not active
Signal ALARM2 SS3                          O12           R, W (P)      0 = signal not active
Signal TRIP TS2                            O13           R, W (P)      0 = signal not active
Operate output relays                      O41           R, W (P)      0 = not operated
1 = operated
Data                                  Code   Data        Values
Memorized I&gt; start signal             O21    R           0 = signal not active
Memorized I&gt; operate signal           O22    R           0 = signal not active
Memorized I&gt;&gt; start signal            O23    R           0 = signal not active
Memorized I&gt;&gt; operate signal          O24    R           0 = signal not active
Memorized I0&gt; start signal            O25    R           0 = signal not active
Memorized I0&gt; operate signal          O26    R           0 = signal not active
Memorized I0&gt;&gt; start signal           O27    R           0 = signal not active
Memorized I0&gt;&gt; operate signal         O28    R           0 = signal not active
Memorized output signal TS1           O29    R           0 = signal not active
Memorized output signal SS1           O30    R           0 = signal not active
Memorized output signal SS2           O31    R           0 = signal not active
Memorized output signal SS3           O32    R           0 = signal not active
Memorized output signal TS2           O33    R           0 = signal not active
PRESENT SETTING VALUES
Present start value for stage I&gt;      S1     R           0.5...5.0 x In
Present operate time or time          S2     R           0.05...300 s
multiplier for stage I&gt;                                  0.05…1.0
Present start value for stage I&gt;&gt;     S3     R           0.5...40 x In
999 = not in use (∞)
Present operate time for stage I&gt;&gt;    S4     R           0.04...300 s
Present start value for stage I0&gt;     S5     R           0.1...0.8 x In
Present operate time or time          S6     R           0.05...300 s
multiplier for stage I0&gt;                                 0.05…1.0
Present start value for stage I0&gt;&gt;    S7     R           0.1...10.0 x In
Present operate time for stage I0&gt;&gt;   S8     R           0.05...300 s
Present checksum of                   S9     R           0...255
Present checksum of                   S10    R           0...255
Present checksum of                   S11    R           0...255
Present checksum of                   S12    R           0...255
switchgroup SGR1
Present checksum of                   S13    R           0...255
switchgroup SGR2
Present checksum of                   S14    R           0...255
switchgroup SGR3
Data                              Code   Data        Values
MAIN SETTING VALUES
Start current of stage I&gt;,        S21    R, W (P)    0.5...5.0 x In
Operate time or time multiplier   S22    R, W (P)    0.05...300 s
of stage I&gt;, main setting                            0.05…1.0
Start current of stage I&gt;&gt;,       S23    R, W (P)    0.5...40.0 x In
Operate time of stage I&gt;&gt;,        S24    R, W (P)    0.04...300 s
Start current of stage I0&gt;,       S25    R, W (P)    0.1...0.8 x In
Operate time or time multiplier   S26    R, W (P)    0.05...300 s
of stage I0&gt;, main setting                           0.05…1.0
Start current of stage I0&gt;&gt;,      S27    R, W (P)    0.1...10.0 x In
Operate time of stage I0&gt;&gt;,       S28    R, W (P)    0.05...300 s
Checksum of switchgroup SGF1,     S29    R, W (P)    0...255
Checksum of switchgroup SGF2,     S30    R, W (P)    0...255
Checksum of switchgroup SGB,      S31    R, W (P)    0...255
Checksum of switchgroup SGR1,     S32    R, W (P)    0...255
Checksum of switchgroup SGR2,     S33    R, W (P)    0...255
Checksum of switchgroup SGR3,     S34    R, W (P)    0...255
SECOND SETTING VALUES
Start current of stage I&gt;,        S41    R, W (P)    0.5...5.0 x In
Operate time or time multiplier   S42    R, W (P)    0.05...300 s
of stage I&gt;, second setting                          0.05…1.0
Start current of stage I&gt;&gt;,       S43    R, W (P)    0.5...40.0 x In
Operate time of stage I&gt;&gt;,        S44    R, W (P)    0.04...300 s
Start current of stage I0&gt;,       S45    R, W (P)    0.1...0.8 x In
Operate time or time multiplier   S46    R, W (P)    0.05...300 s
of stage I0&gt;, second setting                         0.05…1.0
Start current of stage I0&gt;&gt;,      S47    R, W (P)    0.1...10.0 x In
Operate time of stage I0&gt;&gt;,       S48    R, W (P)    0.05...300 s
Data                                   Code        Data        Values
Checksum of switchgroup SGF1,          S49         R, W (P)    0...255
Checksum of switchgroup SGF2,          S50         R, W (P)    0...255
Checksum of switchgroup SGB,           S51         R, W (P)    0...255
Checksum of switchgroup SGR1,          S52         R, W (P)    0...255
Checksum of switchgroup SGR2,          S53         R, W (P)    0...255
Checksum of switchgroup SGR3,          S54         R, W (P)    0...255
Operate time for the circuit breaker   S61         R, W (P)    0.1...1.0 s
RECORDED AND MEMORIZED PARAMETERS
Current on phase L1 at starting        V11...V51   R           0...63 x In
Current on phase L2 at starting        V12...V52   R           0...63 x In
Current on phase L3 at starting        V13...V53   R           0...63 x In
Neutral current I0 at starting         V14...V54   R           0...21 x In
Duration of the latest start           V15...V55   R           0...100%
situation of stage I&gt;
Duration of the latest start           V16...V56   R           0...100%
situation of stage I&gt;&gt;
Duration of the latest start           V17...V57   R           0...100%
situation of stage I0&gt;
Duration of the latest start           V18...V58   R           0...100%
situation of stage I0&gt;&gt;
Maximum demand current for 15 min.     V1          R           0...2.5 x In
Number of starts of stage I&gt;           V2          R           0...255
Number of starts of stage I&gt;&gt;          V3          R           0...255
Number of starts of stage I0&gt;          V4          R           0...255
Number of starts of stage I0&gt;&gt;         V5          R           0...255
Phase conditions during trip           V6          R            1 = IL3&gt;,   2 = IL2&gt;,
4 = IL1&gt;,   8 = I 0&gt;
16 = IL3&gt;&gt;, 32 = IL2&gt;&gt;
64 = IL1&gt;&gt;,128 = I0&gt;&gt;
Operation indicator                    V7          R           0...9
Highest maximum demand current         V8          R           0…2.55 x In
15 minute value
Resetting of output relays             V101        W           1 = output relays and all
at latched output                                                  information from the
display are reset
Resetting of output relays             V102        W           1 = output relays and
and recorded data                                                  registers are reset
Remote control of settings                 V150          R, W          0 = main settings activated
1 = second settings activated,
see chapter &quot;Description
of function&quot;
Event mask word for                        V155          R, W          0...255, see chapter
overcurrent events                                                     &quot;Event codes&quot;
Event mask word for                        V156          R, W          0...255, see chapter
earth-fault events                                                     &quot;Event codes&quot;
Event mask word for                        V157          R, W          0...1023, see chapter
output signal events                                                   &quot;Event codes&quot;
Opening of password for                    V160          W             1...999
Changing or closing of password            V161          W (P)         0...999
for remote settings
Activating of self-supervision output      V165          W             1 = self-supervision output
is activated and IRF
LED turned on
EEPROM formatting                          V167          W (P)         2 = formatting, to be
(will restore factory settings)                                            followed by power reset
Internal fault code                        V169          R             0...255
Data comm. address of the module           V200          R, W          1...254
Data transfer rate                         V201          R, W          4800 or 9600 Bd (R)
4.8 or 9.6 kBd (W)
Software version symbol                    V205          R             037_ or 056_
Event register reading                     L             R             time, channel number
and event code
Re-reading of event register               B             R             time, channel number
Type designation of the module             F             R             SPCJ 4D29
Reading of module status data              C             R             0 = normal state
1 = module been subject
to automatic reset
2 = overflow of event regist.
3 = events 1 and 2 together
Resetting of module state data             C             W             0 = resetting
Time reading and setting                   T             R, W          00.000...59.999 s
The event register can be read by L-command        The setting values S1...S14 are the setting values
only once. Should a fault occur e.g. in the data   used by the protection functions. All the settings
transfer, the contents of the event register may   can be read or written. A condition for writing
be re-read using the B-command. When re-           is that remote set password has been opened.
quired, the B-command can be repeated. Gen-
erally, the control data communicator SACO         When changing settings, the relay unit will
100M reads the event data and forwards them to     check that the variable values are within the
the output device continuously. Under normal       ranges specified in the technical data of the
conditions the event register of the module is     module. If a value beyond the limits is given to
empty. The data communicator also resets ab-       the unit, either manually or by remote setting,
normal status data, so this data is normally a     the unit will not perform the store operation but
zero.                                              will keep the previous setting.
Fault codes   Shortly after the internal self-supervision system   indicates the fault type. When a fault code
has detected a permanent relay fault, the red IRF    appears on the display, the code number should
indicator is lit and the output relay of the self-   be recorded and given to the authorized repair
supervision system operates. Further, in most        shop when overhaul is ordered. In the table
fault situations, an auto-diagnostic fault code is   below some fault codes that might appear on the
shown on the display. This fault code consists of    display of the SPCJ 4D29 module are listed:
a red figure 1 and a green code number which
Fault code     Type of error in module
4       Faulty trip relay path or missing output relay card
30       Faulty program memory (ROM)
50       Faulty work memory (RAM)
51       Parameter memory (EEPROM) block 1 faulty
52       Parameter memory (EEPROM) block 2 faulty
53       Parameter memory (EEPROM) block 1 and block 2 faulty
54       Parameter memory (EEPROM) block 1 and block 2 faulty with different
56       Parameter memory (EEPROM) key faulty. Format by writing a &quot;2&quot; to
variable V167
195        Too low value in reference channel with multiplier 1
131        Too low value in reference channel with multiplier 5
67        Too low value in reference channel with multiplier 25
203        Too high value in reference channel with multiplier 1
139        Too high value in reference channel with multiplier 5
75        Too high value in reference channel with multiplier 25
252        Faulty filter on I0 channel
253        No interruptions from the A/D-converter
ABB Substation Automation Oy
Tel. +358 (0)10 22 4000
Fax.+358 (0)10 22 41094
Overcurrent Protection, fault protection, ABB Group, Earth fault, e-mail address, Overcurrent relay, circuit protection, earth fault relay, set stage, Protection Relays
Sensitive Earth fault Relay SPAJ