TemTrip PRO
PRS-1H MULTI-FUNCTIONAL PROTECTIVE RELAY
INSTRUCTION MANUAL

Notice・Be sure to read this manual before servicing or inspecting the product.
・Keep this manual in a safe location for future reference.
・Setting change and test of this model must be done by persons having knowledge.

KRB-5433d

Table of Contents
1. Preface ................................................................................................................................................................... 1
1-1. Included Items ................................................................................................................................................. 1
2. Safety Notices ........................................................................................................................................................ 2
3. Specifications ......................................................................................................................................................... 3
4. Characteristic list .................................................................................................................................................... 5
4-1. Representation Format of Type ....................................................................................................................... 5
4-2. Setting.............................................................................................................................................................. 6
4-3. Characteristic Curve ...................................................................................................................................... 10
5. Component Identifications .................................................................................................................................... 14
6. Installation ............................................................................................................................................................ 16
7. Connection ........................................................................................................................................................... 17
7-1. Circuits and Ratings ....................................................................................................................................... 17
8. How to Display Measurements and Make Settings .............................................................................................. 20
8-1. Outline ........................................................................................................................................................... 20
8-2. Monitor Display Screen .................................................................................................................................. 21
8-3. Navigation to Each Setting Item Screen After Power ON .............................................................................. 22
8-3-1. About the standby mode. ........................................................................................................................ 23
8-4. MONITOR Screens ........................................................................................................................................ 24
8-5. SETUP Screens ............................................................................................................................................. 27
8-5-1. Date setting screen ................................................................................................................................. 32
8-5-2. Time setting screen ................................................................................................................................. 33
8-5-3. Password Authentication Screens .......................................................................................................... 34
8-5-4. Password Setting screens ....................................................................................................................... 35
8-6. SETTING Screens ......................................................................................................................................... 36
8-6-1. SETTING (S-B) Screen ........................................................................................................................... 37
8-6-2. SETTING (S-C) Screen........................................................................................................................... 43
8-6-3. SETTING (S-D) Screen........................................................................................................................... 45
8-6-4. SETTING (S-E) Screen ........................................................................................................................... 49
8-7. MAINTENANCE Screens............................................................................................................................... 50
8-7-1. Protective function test ............................................................................................................................ 53
8-7-2. Relay output test ..................................................................................................................................... 54
8-7-3. Data Initialization Screen ........................................................................................................................ 55
8-7-4. History Screens ....................................................................................................................................... 56
8-8. Change Settings ............................................................................................................................................ 58
8-8-1. Numerical change ................................................................................................................................... 58
8-8-2. Selection change..................................................................................................................................... 59
8-8-3. Relay Setting Operation .......................................................................................................................... 60
8-9. Display Contents of History and Incident Screens ......................................................................................... 61
8-10. Responses to Abnormal Events ................................................................................................................... 64

KRB-5433d

1. Preface
Thank you for purchasing a TERASAKI PRS-1H multi-functional protective relay (TemTrip PRO).
Before using the PRS-1H multi-functional protective relay (hereafter referred to as the "protective relay"), be sure tocarefully read "2. Safety Notices", the entire contents of this manual, and all other appendixes to familiarize yourself withall device information, safety information, and precautions to ensure correct use of the relay.

1-1. Included Items
Before using this product, check that all the following items are included.

Included items① Protective relay × 1② Relay connector × 1③ Relay connector × 1(10-pin)④ External input connector × 1(12-pin)(6-pin)⑥ Current input connector × 2⑤ Communication connector × 1(*1)(3-pin)⑦ 4-20 mA output connector × 1

(*2)

(*2)

(10-pin)⑧ Trip signal connector × 1⑨ Control power or voltage input connector × 2(5-pin)(4-pin)(5-pin)⑩Ferrite core × 2⑪ Mounting bracket × 2*1: Not included in products without communication function*2: For Type-F without monitoring function, only one current input connector is included and no 4-20 mA output connector is included.

Wire specifications
Description②③④⑤⑧⑨

Relay contact terminal, external input terminal,
communication terminal (*1)
Trip relay contact terminal, voltage input terminal,
control power input terminal⑦

4-20 mA terminal⑥

Current input terminal

Solid wire

Stranded wire

0.08 to 1.31 mm20.25 to 1.31 mm2(AWG28 to 16)(AWG23 to 16)
0.13 to 2.08 mm20.20 to 2.08 mm2(AWG26 to 14)(AWG24 to 14)
0.13 to 2.08 mm20.20 to 2.08 mm2(AWG26 to 14)(AWG24 to 14)
0.20 to 3.31 mm2(AWG24 to 12)

Sheath peeling length
6.5 mm
10.0 mm
9.0 mm
10.0 mm*1: Use the attached ferrite core (⑩) wound twice near the terminal.

1

KRB-5433d

2. Safety Notices
In these Instructions, safety notices are divided into "CAUTION" according to the hazard level:

CAUTION : A caution notice with this symbol indicates that neglecting the suggested procedure or practice could
result in moderate or slight personal injury and/or property damage.
Note that failing to observe

CAUTION notices could result in serious results in some cases. Because safety notices

contain important information, be sure to read and observe them.

CAUTION Common to transportation, operations and storage
 Do not place the product in an area that is subject to high temperature, high humidity, excessive dusty air,corrosive gas, strong vibration and shock, or other unusual conditions. Maintain the ambient temperature andhumidity within the respective ranges shown in Table 1 Specifications of protective relay (without
condensation). Failure to do so may result in malfunction.
For cleaning, turn the power off and then wipe the device with a soft cloth that is soaked in lukewarm water andthen firmly wrung out.
Using thinner or other organic solvents may cause the device surfaces to discolor or melt.
 Transportation
 Do not drop or impact the product. Carefully handle the product as this is an electronic device. Failure to do so
may result in malfunction.
 Operations
 The control power input terminal and rated voltage input terminal have the same connector shape, so be
careful when wiring. Incorrect wiring may damage the equipment.
 The two current input terminals have the same connector shape, so be careful when wiring. Incorrect wiring
may damage the equipment.
 Make sure that the product is set, adjusted or tested by a competent person. Before using the product,familiarize yourself with all safety information and precautions for the molded-case circuit breaker and OCR.
Careless handling could result in unexpected accidents.
 After completion of a function check involving setting changes, be sure to return the settings to the originalvalues. Failure to do so may cause a burnout or fire.
 If the product has not been used for a certain period of time, the date and time may be reset. In that case, set
the date and time. (P.32, P.33)

2

KRB-5433d

3. Specifications
The specifications of the protective relay are shown in Table 1 below.

Table 1 Specifications of protective relay
Item
Control voltage

Details
24 VDC, 110 VDCPower consumption

5 VA

External dimensions

W196 × H146 × D163.6 mm (including the terminals on the back)Operating temperature-10°C to +55°C

Storage temperature-25°C to +75°C

Humidity
Applicable standards

95% or lower (no condensation)
IEC60255-8

163.6

196

146

143.2

(Front view)(Side view)

160

133

132

161.5

(Rear view)(Panel cutout dimensional drawing)
Figure 1 Outline drawings

3

KRB-5433d

Table 2 Functional specifications of protective relay (●: Standard feature, 〇: Option)Long time-delay tripping (LT)Type-G●

Presence/absenceType-F●

Type-T●

Short time-delay tripping (ST)

●

●

●

Instantaneous tripping (INST)

●

●

●

●

●

●

Overvoltage protection (OV)

●

●

●

Reverse power protection (RP)

●

-

-

Ground fault overvoltage protection (OVGR)

●

●

●

●

●

●

●

-

●

●

●

●

●

-

-

Overfrequency detection (OF)

●

-

-

Voltage establishment detection

●

-

-

External trip

●

●

●

Arc detection

〇

〇

〇

Pre-trip alarm (PTA)

●

●

●

System alarm (SYS)
LED indicators, liquid crystal display (LCD), display andcontact output
Current, voltage, electric power, frequency, power factor

●

●

●

●

●

●

●

●

●

I/O state (contact)

●

●

●

Harmonic measurement

〇

〇

〇

Trip event log (100 events)

●

●

●

Alarm event log (100 events)

●

●

●

Event log (200 events)

●

●

●

●

〇

●

〇
Required〇
Required〇
RequiredFunction

Undervoltage protection (UV)

Protective function*1

Directional ground fault protection (DGR)
Differential current protection (DIFF)*2*3

Negative phase sequence current protection (UB) *4
Underfrequency detection (UF)

Alarm function
Operation indication
function

Measurement/event
indication function*1

Monitoring function (4 to 20 mA)
Communication function*5
Control power supply*1: Activated with auxiliary switch input terminals a and c short-circuited*5: Phase*3: Detects the maximum phase energizing current value of the generator and outputs an operation signal when the maximum phase energizing current
value exceeds the specified ratio differential set current value.The relationship between the ratio differential set current value and the maximum phase

Diff ratio|i1－(i2×IDFP/IDFS)||i1－i2|energization current value is shown below.
Diff ratio

Limit ratio

Limit ratio
12

1

i1/ICT (CT secondary current)2

i1/ICT (CT secondary current)(Type-G)(Type-T)*4: Protects circuit breakers from negative phase sequence currents generated by phase failure and reverse phase, preventing motor burnout and machine
damage.
Negative phase sequence current : Ins = √ ( IR^2 * IS^2 + 2 * IR * IS * cosθ ) / √3
( IR: R-phase current, IS: S-phase current, θ:Phase difference between R-phase current and 60 degrees moved S-phase current )*5: The data format is Modbus RTU.

4

KRB-5433d

4. Characteristic list
4-1. Representation Format of TypeType:

PRS-1H - G H A1 1 ① ② ③ ④

####
⑤

Name
① Specification

SymbolRemarksG
For generator protection
F
For feeder circuit
T
For transformer protection② Control power supply
H
Control power supply: 110 VDC
LControl power supply: 24 VDC③ Rated voltage
A1
Rated voltage Vn: 110 VAC
A2
Rated voltage Vn: 220 VAC④ CT rated current
1
CT rated current: 1 A
5
CT rated current: 5 A⑤ OptionsN
No option
M
Monitoring function (4 to 20 mA) (*)
C
Communication function
H
Harmonic measurement functionA
Arc protection function*: Optional for Type-F only. (For Type-G and Type-T, this function is provided as a standard feature.)5

KRB-5433d

4-2. Setting
Table 3 to Table 5 show the setting items of the protective relay.
Table 3 Common setting items (1/3)
Item

Setting range
Type-G

Type-F

Type-T

STEP

Remarks

CT primary current

10 to 1500 A

1

CT secondary current

1A/5A

-

(*1)

Rated current

5.0 to 1500.0 A

0.1

The actual setting range is limited to (0.5 to1.0) × ICT according to the setting of ICT.

Rated primary voltage

110 to 16000 V

1-

Rated secondary voltage

110 V / 220 V--

Rated zero-phase voltage

190 V (Not adjustable)

-

-

1

-

Rated power

1 to 9000 kW

Automatic calculation (√3 * In * Vn * 0.8 )-Frequency

60Hz / 50 Hz--

Topology

1P3W / 3P3W--

5 min / 30 min / 60 min--

Demand power
measurement intervalPower monitoring:
Monitored power
Power monitoring: Relay
setting

100 to 9999 kW

-

1

-

OFF / RY6---

Relay output mode

HOLD/PULSE-

This item can be set individually for eachrelay output.

Lockout relay:Output mode

HOLD/PULSE--

Lockout relay:Output setting

OFF / ON-

To use this setting, "LOCKOUT RY
ENABLE" must be set to ON.

Lockout relay:UVT setting

OFF / ON-

Phase1 (R-phase) current
adjustment range

90.0 to 110.0%

0.1

Phase 2 (S-phase) current
adjustment range

90.0 to 110.0%

0.1

Phase3 (T-phase) current
adjustment range

90.0 to 110.0%

0.1Line voltage adjustment
range

90.0 to 110.0%

0.1

Active power adjustment
range

90.0 to 110.0%

0.1

90.0 to 110.0%

0.1

NONE / CURRENT / VOLTAGE / ACTIVE POWER / REACTIVE
POWER / FREQUENCY / PF-This item specifies the function to beallocated to the channel.

-

(*2)

-

(*2)

Reactive power adjustment
range
Ch mode4-mA output setting
20-mA output setting"ZERO RANGE / FULL RANGE setting range" (→P.31)

This item is used for fine adjustment
between the value actually measured at the
installation location and the measured
value displayed.

4-mA output adjustment

90.0 to 110.0%

0.1

(*2)

20-mA output adjustment

90.0 to 110.0%

0.1

(*2)

Transmission address

1 to 311(*3)

9600/19200

-

(*3)

NONE/ODD/EVEN

-

(*3)

Display switching

ON / OFF-(*4)

Connection type

1 to 4-(*4)

Display brightness

10 to 100%10-Display contrast

10 to 100%

10-Date setting

2000/1/1 to 2099/12/31--

Time setting

00:00 to 23:59--

Transmission rate
Parity*1: Specified at the time of ordering.
*2: Not displayed without the Type-F monitoring function.
*3: Displayed when there is a communication function.
*4: Refer to "8-4. MONITOR Screens" for the display by each selection.
*5: It is a setting that switches by inputting to the double setting terminal.

6

KRB-5433d

Table 3 Common setting items (2/3)
Item

Setting range
Type-G

Type-F

Type-T

STEP

Remarks-

Long time-delay tripping 1
Mode

OFF / TRIP-

Characteristic-

SIT (power of 0.02) / VIT (power of 1) /EIT (power of 2)-

Pickup current(0.80 to 1.15) × In

(0.80 to 1.10) × In

0.01

-

Activation time limit

15.00 to 60.00 s

1.00 to 10.00 s

0.01

-

Refer to 8-8-3. Relay Setting Operation.

-

-

Mode

OFF / TRIP--

CHARACTER-

SIT (power of 0.02) / VIT (power of 1) /EIT (power of 2)--

Pickup current(0.80 to 1.15) × In

(0.80 to 1.10) × In

0.01

-

Activation time limit

15.00 to 60.00 s

1.00 to 10.00 s

0.01

-

Output relay
Long time-delay tripping 2 (*5)

Short time-delay tripping 1
Mode
Pickup current
Activation time limit--(2.00 to 5.00) × In

OFF / TRIP
(1.00 to 10.00) × In

0.01

-

0.10 to 1.00s

0.05 to 0.80s

0.01

-

OFF / ON--

Refer to 8-8-3. Relay Setting Operation.

--

I2T characteristics
Output relay
Short time-delay tripping 2 (*5)
ModePickup current
Activation time limit--(2.00 to 5.00) × In

OFF / TRIP
(2.00 to 10.00) × In

0.01

-

0.10 to 1.00s

0.05 to 0.80s

0.01

-

-

-

I2T characteristics

OFF / ONInstantaneous tripping 1
Mode

OFF / TRIP-

Pickup current(2.00 to 24.00) × In

0.01

Output relay

Refer to 8-8-3. Relay Setting Operation.

-

The maximum value is Ict × 16.
-

Instantaneous tripping 2 (*5)
ModePickup current

OFF / TRIP-

(2.00 to 24.00) × In

0.01

The maximum value is Ict × 16.

Pre-trip alarm 1
Mode

OFF / ALARM--

Characteristic-(Linked with "CHARACTER" in the Long
time-delay tripping 1)--

Pickup current(0.75 to 1.05) × In

(0.75 to 1.10) × In

0.01

-

10.0 to 30.0s

0.5 to 10.0s

0.1

-

Mode

OFF / ALARM--

Characteristic-(Linked with "CHARACTER" in the Long
time-delay tripping 2)--

Pickup current(0.75 to 1.05) × In

(0.75 to 1.10) × In

0.01

-

10.0 to 30.0s

0.5 to 10.0s

0.1-

Activation time limit
Pre-trip alarm 2 (*5)

Activation time limit
Negative phase sequence
Mode

OFF / ALARM / TRIP--

Pickup current(0.10 to 1.00) × In

0.01

-

1.0 to 30.0s

0.1-

Refer to 8-8-3. Relay Setting Operation.

--

Activation time limit
Output relay
Directional ground fault
Mode

OFF / ALARM / TRIP--

Pickup current

1.0 to 10.0mA

0.1-

Pickup voltage(0.050 to 0.150) × V0n

0.001

-

0.2 to 10.0s

0.1

Activation time limit
Phase
Output relay

0 to 90°/ OFF

10

Refer to 8-8-3. Relay Setting Operation-

The OFF setting is a non-directionalsetting.
-7

KRB-5433d

Table 3 Common setting items (3/3)
Item

Setting range
Type-G

Type-F

Type-T

STEP

Remarks

Ground fault overvoltage
Mode

OFF / ALARM / TRIP--

Pickup voltage(0.050 to 0.150) × V0n

0.001

-

0.1 to 1.0s

0.1-

Refer to 8-8-3. Relay Setting Operation--

Activation time limit
Output relay
Undervoltage
Mode

OFF / TRIP--

Reset voltage(0.80 to 0.95) × Vn

0.01

-

Set voltage(0.40 to 0.80) × Vn

0.01

-

0.1 to 36.0s

0.1-

Refer to 8-8-3. Relay Setting Operation--

Activation time limit
Output relay
Overvoltage
Mode
Set voltage
Activation time limit
Output relay

OFF / TRIP--

(1.05 to 1.50) × Vn

0.01

-

0.1 to 5.0s

0.1-

Refer to 8-8-3. Relay Setting Operation--

External trip
Mode
Output relay

OFF / TRIP--

Refer to 8-8-3. Relay Setting Operation--

OFF / ALARM--

Refer to 8-8-3. Relay Setting Operation--

System alarm
Mode
Output relay
Arc detection
Mode

OFF / ALARM / TRIP-

Pickup current(0.5 – 6.0) × ICT

0.1

Output relay

Refer to 8-8-3. Relay Setting Operation-

8

KRB-5433d

The operation time limit is within 10ms.
-

Table 4 Setting items (for Type-G)
Item

Setting range

STEP

Remarks

OFF / ALARM / TRIP--

Differential current
Mode
CB AUX state

NORMAL / CB ON-

If "CB ON" is set, it will not operate when the
CB status is OFF.

Set differential current(0.10 to 0.50) × i1

0.01

i1 = I1 ×ICT2 / ICT
I1: Applied current on the primary side ofgenerator

Limit differential current(0.10 to 0.50) × Ict

0.01

-

0.2 to 10.0s

0.1-

Activation time limit
Output relay

Refer to 8-8-3. Relay Setting Operation

Reverse power 1
Mode

OFF / ALARM / TRIP--

Pickup power(0.04 to 0.10) × Pn

0.01

-

2.5 to 20.0s

0.1-

Refer to 8-8-3. Relay Setting Operation--

Activation time limit
Output relay
Reverse power 2 (*5)
ModeOFF / ALARM / TRIP--

Pickup power(0.04 to 0.10) × Pn

0.01

-

2.5 to 20.0s

0.1-

OFF / ALARM / TRIP--

Pickup frequency(0.80 to 1.05) × Fn

0.01

-

Activation time limit

1.0 to 10.0s

0.1-

Refer to 8-8-3. Relay Setting Operation--

Pickup frequency(0.95 to 1.40) × Fn

0.01

-

Activation time limit

1.0 to 10.0s

0.1-

Refer to 8-8-3. Relay Setting Operation--(0.80 to 1.05) × Vn

0.01

-

0.1 to 30.0s

0.1-

Dropout voltage(0.40 to 0.80) × Vn

0.01

-

Dropout time

1.0 to 5.0s

0.1

-

-

If RY7 is set, RY7 cannot be selected forother protection.

Setting range

STEP

Remarks

OFF / ALARM / TRIP--

Transformer wiring method

Y-Y / △-△ /△-Y / Y-△--

Transformer primary current
ratio(0.30 to 1.20) × Ict

0.01

-

Transformer secondary
current ratio(0.30 to 1.20) × Ict

0.01

-

Activation time limit
Frequency relay protection
Mode
Underfrequency

Output relay
Overfrequency

Output relay
Voltage establishment
Established voltage
Establishment activation
time limit

Output relay

OFF / RY7

Table 5 Setting items (for Type-T)
Item
Differential current
ModeHigh speed over current
setting(5.00 to 15.00) × i1

0.01

Refer to 8-8-3. Relay Setting Operation-

Set differential current(0.20 to 0.50) × i2

0.01

Limit differential current

Output relay

i2 = i1 × IDFS / IDFP

(0.30 to 0.50) × IDFS

0.01

-

Second harmoniccomponent ratio

0.10 to 0.30

0.01

-

Activation time limit

0.20 to 5.00s

0.01

-

9

KRB-5433d

4-3. Characteristic Curve
Figure 2 to Figure 5 show the operating characteristic curves of the protective relay.

Long time-delay tripping (Type-G)

Long time-delay tripping (Type-F/T SIT[0.02])

Long time-delay tripping (Type-F/T VIT[1.00])

Long time-delay tripping (Type-F/T EIT[2.00])

Figure 2 Operating characteristic curves of the protective relay 1

10

KRB-5433d

Short time-delay tripping (Type-G)

Short time-delay tripping (Type-F/T)

Double setting uses the same curve.

Instantaneous tripping
Figure 3 Operating characteristic curves of the protective relay 2

11

KRB-5433d

Pre-trip alarm (Type-G)

Pre-trip alarm (Type-F/T SIT[0.02])

Pre-trip alarm (Type-F/T VIT[1.00])

Pre-trip alarm (Type-F/T EIT[2.00])

Figure 4 Operating characteristic curves of the protective relay 3

12KRB-5433d

Pre-trip alarm 2 (Type-G)

Reverse power protection (Type-G)

Double setting uses the same curve.

Negative phase protection
Figure 5 Operating characteristic curves of the protective relay 4

13

KRB-5433d

5. Component Identifications
Figure 6 and Figure 7 show the appearance of the protection relay, and Table 6 and Table 7 explain each component of
the protection relay.
③

②

⑨ ⑧ ⑦

⑥

⑩
⑪
⑫

⑬
⑭
⑮
①
⑯
⑰

⑤

④

Figure 6 External view of the protective relay (front side)

Table 6 Name and function of each component of the protective relay (front side)
No.

Name

Description①

Display area

This area displays various screens.

②

MENU button

This button is used to switch the displayed menu.

③

ENTER button

This button is used to apply the settings that have been changed.

④

RESET button

This button is used to reset the protection relay or extinguish the LEDs.

⑤

Arrow buttons

These buttons are used to move the cursor from one menu item to another.

⑥

POWER lamp

This lamp is lit in white while control power is being applied.

⑦

CPU lamp

This lamp is lit in green while the internal CPU is operating or blinks in green when the CPU
detects an error.

⑧

SYSTEM ALARM lamp

This lamp lights up in red when an error occurs in the main unit.

⑨

TRIP ALARM lamp

This lamp lights up in red when tripping occurs or blinks in red when an alarm occurs.

⑩

LT/ST/INST lamp

This lamp blinks or lights up in red when long time-delay tripping, short time-delay tripping, or
instantaneous tripping occurs.

⑪

Pre-trip alarm lamp

This lamp blinks or lights up in red when a pre-trip is detected.

⑫

Negative phase sequencecurrent lamp

This lamp blinks or lights up in red when negative phase sequence current is detected.

⑬

Reverse power lamp

This lamp blinks or lights up in red when reverse power is detected.

⑭

Ground fault lamp

This lamp blinks or lights up in red when ground fault overvoltage or directional ground fault is
detected.

⑮

Voltage lamp

This lamp blinks or lights up in red when undervoltage or overvoltage is detected.

⑯

Frequency lamp

This lamp blinks or lights up in red when underfrequency or overfrequency is detected.

⑰

Differential current lamp

This lamp blinks or lights up in red when differential current is detected.

14KRB-5433d

②

③

①

④

⑤

(*2)

⑦

⑨

(*1)

⑥

⑪

(*2)

⑫

⑩

(*1)

⑧

Figure 7 External view of the protective relay (rear side)*1: Be careful when wiring because the terminals have the same shape.
*2: Be careful when wiring because the terminals have the same shape.( One connector has one terminal name mark )Table 7 Name and function of each component of the protective relay (rear side)
No.

Name

Description①

1 to 10

Relay output terminals 1 to 10②

11 to 22

Relay output terminals 11 to 22③

a, Tc, re, ear, cc, c

a-c: Auxiliary switch input terminal, Tc-c: External trip signal input terminal,
re-c: Reset command input terminal, ear-c: Earthing switch input terminal,
cc-c: Double setting input terminal④

C+, C-, Cc

Communication terminals⑤-

Arc detection input terminal

KA, n1, KB, KC, n, n2

Input terminals from overcurrent detection CT (Rated current: 1 A or 5 A)

Z1, Z2

Input terminals from electric leakage detection CT (Rated current: 1 A or 5 A)

Y1, Y2

Input terminals from ground fault detection CT (Rated current: 1 A or 5 A)⑦

A1, A2, A3, A4, A-

4-20 mA output terminals⑧

TE1, TS1, TE2, TS2, TG

TE1-TS1: Trip signal output terminal, TE2-TS2: Trip signal output terminal 2

S1(+), S0(-)

Control power input terminals (protection function): 24 VDC, 110 VDC

P1(+), P0(-)

Control power input terminals (monitoring function): 24 VDC, 110 VDC

UA, UB, UC, Un

Rated voltage input terminals

DA, Dn1, DB, DC, Dn2, Dn

Input terminals from ratio differential current CT (Rated current: 1 A or 5 A)

O1, O2, O3, O4

Input terminals for current measurement

Ground terminal

-

⑥

⑨
⑩
⑪
⑫

15

KRB-5433d

6. Installation
This chapter describes how to install the protective relay.

Panel

Mounting bracket

Figure 8 Installation method

1) Cut out the panel on which the protective relay is to be installed, according to the panel mounting dimensions shown in
Figure 1 Outline drawings.

2) Install the protective relay and insert the mounting brackets provided into the right and left insertion grooves in themain unit of the protective relay.

3) Tighten each screw on the mounting bracket with an Allen key (M4) to a tightening torque of 20 to 30 cN∙m until themain unit is secured properly.

16

KRB-5433d

7. Connection
7-1. Circuits and Ratings
Figure 9 and Figure 10 show the wiring of the protective relay and Table 8 shows the terminal numbers, functions, and themeanings of each symbol.

CT4
CT5

EVT
CT6

G
Dn Dn2 DC

DB Dn1 DAcc ear

re

TC

a

c

UA

UB

UC

Un

Y1

Y2

C+ C- CC

A- A1 A2 A3 A4

Power
supplyO1 O2

Arc detection

KA

CT1

CT2
CT3

TS1

n1

TE1

KB

TS2

KC

TE2

n2

TG

(+)

SHT

(-)

n
Z1
ZCT
Z2
R

S

T

O3 O4

FG

O1 O2 O3 O4

S0(-) S1(+) P0(-) P1(+)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Frame ground

Type-G

Figure 9 Protective relay wiring diagram
Note: The wiring diagram illustrates the wiring of the protective relay with all the options mounted.

17

KRB-5433d

EVT

cc ear re

TC

a

c

UA UB UC Un

Y1 Y2

C+ C- CC

Power

A- A1 A2 A3 A4

supplyO1O2

Arc detection

KA

TS1

n1

TE1

KB

TS2

KC

TE2

n2

TG

(+)

CT1

CT2
SHT

CT3
(-)

n
Z1

ZCT
Z2
FG

O3O4

R

S

O1 O2 O3 O4

S0(-) S1(+) P0(-) P1(+)

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18 19 20 21 22

T

Frame ground

Type-F

CT4
CT5

EVT

CT6

TR
Dn Dn2 DC DB Dn1 DAcc ear re

TC

a

c

UA UB UC Un

Y1 Y2

C+ C- CC

O1O2

Power

A- A1 A2 A3 A4

supplyArc detection

KA

TS1

n1

TE1

(+)

CT1
KB

TS2

KC

TE2

n2

TG

CT2
SHT

CT3
n
Z1

ZCT
Z2
O3O4

R

S

FG

O1 O2 O3 O4

S0(-) S1(+) P0(-) P1(+)

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18 19 20 21 22

T

Frame ground

Type-T

Figure 10 Protective relay wiring diagram
Note: The wiring diagram illustrates the wiring of the protective relay with all the options mounted.

18

KRB-5433d(-)

Table 8 List of terminals in the protective relay wiring diagram
I/O terminal nameTerminal number

Remarks

Frame ground

FG-

Control power supply

S0(-) - S1(+)

Protective function (24 VDC, 110 VDC)

P0(-) - P1(+)

Monitoring function (24 VDC, 110 VDC)

KA - n1
KB - n1
KC - n2

CT secondary-side rated current: 1 A or 5 A (*1)
R-phase: KA - n1, S-phase: KB - n1, T-phase: KC - n2

Ratio differential current signal

DA - Dn1
DB - Dn1
DC - Dn2

Signal from CT for detection(Rated current: 1 A or 5 A)

Auxiliary switch input

a-c

Circuit breaker close/open detection (normally open contact)

External trip signal input

Tc - cCausing a short circuit between terminals for 50 milliseconds outputs a trip signal
from between the TS1 and TE1 terminals.

Reset command input

re - cOperating contact output reset switch

Double setting switch input

cc - cSwitch to change each characteristic setting (1, 2) on “8-6. SETTING Screens”

Earthing switch signal input

ear - c-Rated voltage input terminals(UV, OV)UA, UB, UC, Un

Three-phase, 110 VAC or 220 VAC

ZCT

Z1, Z2

Secondary-side rated current: 1.5 mA
For directional ground-fault tripping (DGR)

EVT

Y1, Y2For ground-fault overvoltage tripping (OVGR) or directional ground-fault tripping (DGR)

Operation signal output

1 - 2 (RY 1)

Operation signal output selection

CT for measurement(LT, ST, INST, PTA, UB, LT2, ST2, etc.)

3 - 4 (RY 2)
5 - 6 (RY 3)
7 - 8 (RY 4)
9 - 10 (RY 5)
11 - 12 (RY 6)Long time-delay tripping (LT/LT2), short time-delay tripping (ST/ST2),
instantaneous tripping (INST/INST2), negative phase sequence current protection(UB), directional ground fault (DGR), ground fault overvoltage (OVGR),
undervoltage (UV), overvoltage (OV), differential current (DIFF), reverse power(RP), underfrequency (UF), overfrequency (OF), system alarm (SYS), remote trip(RT), arc detection (ARC)

13 - 14 (RY 7)
PTA output 1

15 - 16 (RY PTA)

PTA operation signal output 1 (automatic reset)

PTA output 2

17 - 18 (RY PTA2)

PTA operation signal output 2 (automatic reset)

Lockout output

19 - 20 (RY LOCKOUT)

Lockout operation signal output

Self-diagnostic output

21 - 22

Self-diagnosis for monitoring function and protective function

Trip output signal 1

TE1 - TS1 (RY TRIP1)

Signal output: Pulse (100 ms)

Trip output signal 2TE2 - TS2 (RY TRIP2)

Output signal for monitoring function

A1 - A-

A-: COMMON

A2 - AA3 - AA4 - ACT for monitoring function
4 - 20 mA (*2)

O1 - O2 (R-phase)
O3 - O4 (T-phase)

CT rated current: 1 A or 5 A
R-phase: 01 to 02, T-phase: O3 to O4

Communication signal

C+

(+)

C-

(-)

Cc

Common*1: The customer must specify this item when placing an order.
*2: Optional for Type-F only. (For Type-G and Type-T, this function is provided as a standard feature.)19

KRB-5433d

8. How to Display Measurements and Make Settings
Make sure that control power is supplied. Control power supply is required to display measurements.

8-1. Outline
The following seven buttons are used to display measurements and set characteristics: MENU, arrows (up, down, left,
and right), ENTER, and RESET. The buttons that can be used on the screen are displayed on the bottom of the screen.
(Button operations in this chapter and subsequent chapters are explained using the symbols shown in Table 9.)

①
②

③

④

⑤

⑥

⑦

⑧

⑨

⑩

Figure 11 Menu screen

Table 9 Name and function of each component of menu screen
Name

SymbolDescription①

Menu tabs

Menus that can be selected are displayed. The selected menu is displayed in reverse video.

②

Monitor display area

Refer to 8-2. Monitor Display Screen.

③

Menu display area④

Up arrow button[U]⑤

Down arrow button[D]⑥

Left arrow button[L]⑦

Right arrow button[R]⑧

MENU button[M]⑨

ENTER button[E]⑩

RESET button[RST]

The contents of the menu are displayed.

These buttons are displayed when they can be used to switch the screen and select items.

This button is displayed when the user needs to cancel relay operation or extinguish LEDs.

20

KRB-5433d

8-2. Monitor Display Screen
The monitor display screen (Figure 12) on the left side of the display area enables the user to visually identify the items
shown in Table 10.

①

②
④

⑤⑥

③
Figure 12 Monitor display screen

Table 10 Items in monitor display screen
No.

①

Name

Description

CB state

OFF state (Open)②

Show / hide the switch on the "SU-L" screen of the 8-5. SETUP
Screens.

Earthing switch state
OFF state (Open)③

ON state (Closed)

ON state (Closed)

Double setting state
OFF state (Lit in white) ON state (Lit in blue)④

OFF means that the protection function setting 1 is applied.
When ON, the protection function setting 2 is applied.

Power monitoring state (*2)
OFF state (Lit in white) ON state (Lit in yellow)⑤

Voltage establishment state (*3)
Undetected(Lit in white)

Being detected(Blinking in green)

Established(Lit in green)

Generator

AMP

SC

Motor

Transformer

Power: down to up

Type-G⑥

Connection type(*1)
Type-F, T

Power: up to down

*1 :Switch the connection type on the SU-L item of the 8-5. SETUP Screens.
*2: Implemented for Type-G only.
*3: The color changes only when the connection type of ⑥ is “Generator” in Type-G.

21

KRB-5433d

8-3. Navigation to Each Setting Item Screen After Power ON
The protective relay is provided with measured value display items, characteristic value setting items, and maintenanceitems that are used to display histories and conduct functional testing. The user can navigate to each screen by pressing
the MENU button.
● Initial screen (INI-A-1)
This screen is displayed when the power is turned on and is thennavigated to the screen automatically.

● Measured value display item (MO-MAIN)
This screen displays various current values, line voltage, electrical
power, demand power, and electrical energy.
If the product has not been used for a certain period of time, the date and time may bereset. In such a case, the following dialog box is displayed when the user navigates fromthe initial screen.

Use the [E] button to navigate to the time setting screen and then set the time.

[M]● Setting item (S-A)
This screen allows the user to change settings for rated current andeach protective function.

[M]● Maintenance item (MA-A)
This screen allows the user to display and delete recorded logs andconduct protective function verification testing.

[M]

Figure 13 Navigation to each setting item screen after power ON

22

KRB-5433d

8-3-1. About the standby mode.
The protection relay automatically switches to standby mode, which minimizes power consumption, if there is no operationfor 30 minutes after the power is turned on. If you press a button other than [RST] in standby mode, the screen that was
displayed until just before is displayed, and if an alarm occurs, the alarm screen is displayed. Note that the alarm screen
does not switch to standby mode unless the alarm screen is canceled by pressing the [M] button.
Standby mode

[U], [D], [L], [R], [M], [E]Previous screen
No operation (30min)

Alarm

or
Cancel the alarm：[M]Figure 14 Navigation to standby mode

23

KRB-5433d

8-4. MONITOR ScreensFigure 15 show the MONITOR screen transitions. Refer to Table 11 for items that are actually displayed on the screen.

MO-MAIN

[U]

[D]

[U]

[D]

MO-F

[U]

[D]

MO-A

MO-G
(*3, 4)

[U]

[D]

MO-B

[U]

[D]

[U]

[D]

MO-H

[U]

[D]

MO-C

MO-I

MO-J

(*1)

(*5)

[L]

[R]

[U]

[D]

MO-E
(*2)

[U]

[D]

Figure 15 MONITOR screen navigation

24

KRB-5433d

Table 11 MONITOR subscreens
Screen

Display

MO-MAIN

Item

Display range

Remarks

Representative value
I1

Phase current of Phase 1 (R-phase)

0.0 to 6653.5 A

I2

Phase current of Phase 2 (S-phase)

0.0 to 6653.5 A

I3Phase current of Phase 3 (T-phase)

0.0 to 6653.5 A

U MAX

Maximum Phase to Phase voltage

0 to 66535 V

POWER

Active power-2147.4 to 2147.4 MW

FREQUENCY

Frequency

34.99 to 90.01 Hz

PF

Power factor-1.00 to +1.00

MO-A

It will be the same value as the itemon each screen.

Phase current screen
I MAX

Maximum Phase current

0.0 to 6653.5 A-

I1

Phase current of Phase 1 (R-phase)

0.0 to 6653.5 A-

I2

Phase current of Phase 2 (S-phase)

0.0 to 6653.5 A-

I3Phase current of Phase 3 (T-phase)

0.0 to 6653.5 A-

I MAX MAX

Maximum Phase current to the present time

0.0 to 6653.5 A-

I0

Leakage current

0.00 to 665.35 mA

-

I NS

Negative phase sequence current

0.0 to 6653.5 A

-

MO-B

Phase to Phase voltage screen
U MAX

Maximum Phase to Phase voltage

0 to 66535 V-

U12Phase to Phase voltage between Phase1 andPhase2 (R/S-phase)

0 to 66535 V-

U23

Phase to Phase voltage between Phase2 andPhase3 (S/T-phase)

0 to 66535 V-

U31Phase to Phase voltage between Phase3 andPhase1 (T/R-phase)

0 to 66535 V-

U MAX MAX

Maximum Phase to Phase voltage to the present
time

0 to 66535 V-

V0Ground fault voltage

0.0 to 6653.5 V-

MO-C (*1)

Harmonic screen
THD V1

Phase 1 (R-phase) harmonic component

0.0 to 100.0 %-THD V2Phase 2 (S-phase) harmonic component

0.0 to 100.0 %-THD V3Phase 3 (T-phase) harmonic component

0.0 to 100.0 %

-

MO-E

Electric power screen
POWER

Active power-2147.4 to 2147.4 MW

(*2)

P DMD

Demand power

0.0 to 4294.9 MW(*2)

P DMD MAX

Maximum demand power

0.0 to 4294.9 MW

(*2)

Q

Reactive power-2147.4 to 2147.4 MVar

(*2)

S

Apparent power

0.0 to 4294.9 MVA

(*2)

MO-F

Frequency and power factor screen
F INST

Frequency

34.99 to 90.01 Hz-

PF INST

Power factor-1.00 to +1.00

-

MO-G

Electrical energy screen
EP(+)

Active power (+)

0.0 to 4000.0 GWh

(*3)

EP(-)

Active power (-)

0.0 to 4000.0 MWh

(*4)

EQ(+)

Reactive power (+)

0.0 to 4000.0 MVarh

(*4)

EQ(-)

Reactive power (-)

0.0 to 4000.0 MVarh

(*4)

ES

Apparent power

0.0 to 4000.0 GVAh

(*3)

MO-H

Phase current screen
CB AUXILIARYSWITCH

Auxiliary switch input state

ON/OFF-

REMOTE TRIP

External trip input state

ON/OFF-RESET REQUESTReset command input state

ON/OFF-DOUBLE SETTING

Characteristic switch input state

ON/OFF-

EARTHING SWITCH

Earthing switch input state

ON/OFF-MO-I

DO state display 1
RY 1

Relay 1 signal output state

ON/OFF-RY 2

Relay 2 signal output state

ON/OFF-RY 3

Relay 3 signal output state

ON/OFF-RY 4

Relay 4 signal output state

ON/OFF-RY 5

Relay 5 signal output state

ON/OFF-25

KRB-5433d

Screen

Display

MO-J

Item

Display range

Remarks

DO state display 2
RY 6

Relay 6 signal output state

ON/OFF-RY 7

Relay 7 signal output state

ON/OFF-RY PTA

Pre-trip alarm signal output state

ON/OFF-RY PTA 2

Pre-trip alarm 2 signal output state

ON/OFF(*5)

RY LOCKOUT

Lockout operation signal output state

ON/OFF-*1: Displayed only when the harmonic measurement function is available.

*2: The display and unit change according to the number of digits of the measured value. (For negative numbers, the display and unit also change in thesame way as above.)
Display range
0
to
9999
1.000
9.999
10.00
99.99
100.0
999.9
1.000
9.999
10.00
99.99
100.0
Maximum value

Unit
〇
k〇
k〇
k〇
M〇
M〇
M〇

STEP
1
0.001
0.01
0.1
0.001
0.01
0.1

*2: The display and unit change according to the number of digits of the measured value. (When the measured value is greater than the maximum value, it isreset to 0.)
0
1.000
10.00
100.0
1.000
10.00
100.0

Display range
to
9999
9.999
99.99
999.9
9.999
99.99
Maximum value

Unit
k〇h
M〇h
M〇h
M〇h
G〇h
G〇h
G〇h

STEP
1
0.001
0.01
0.1
0.001
0.01
0.1

*3: The display and unit change according to the number of digits of the measured value. (When the measured value is greater than the maximum value, it isreset to 0.)
0
1.000
10.00
100.0
1.000
10.00
100.0

Display range
to
9999
9.999
99.99
999.9
9.999
99.99
Maximum value

Unit
〇
k〇
k〇
k〇
M〇
M〇
M〇

STEP
1
0.001
0.01
0.1
0.001
0.01
0.1

*5: Type-G displayed only.

26

KRB-5433d

8-5. SETUP ScreensFigure 16 to Figure 18 show the SETUP screen transitions. Refer to Table 12 for items that are actually displayed on thescreen. When each setting item is changed, password authentication is required. For details on password authentication
operation, refer to 8-5-3. Password Authentication Screens.
S-A

SU-A

[L]

[L]

[L]

[R]

[R]

[E]

[L]

[L]

[R]

[E]

[L]

[L]

[U]

[D]

SU-B

(*1)

[U]

[D]

SU-C

8-8. Change Settings

[U]

[R]

[E]

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

[D]

SU-D

[U]

[D]

SU-E

[U]

[D]

Figure 16 SETUP screen navigation 1

27

KRB-5433d

[U]

[D]

SU-F

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

(*2)

[U]

[D]

SU-G

[U]

[D]

SU-H

[U]

8-8. Change Settings

[D]

SU-I

[U]

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

[D]

SU-J

(*3)

[U]

[D]

SU-K

[U]

[D]

Figure 17 SETUP screen navigation 2

28

KRB-5433d

[U]

[D]

SU-L

[L]

[L]
8-8. Change Settings

[U]

[R]

[E]

[L]

[L]

[D]

SU-M

8-5-1. Date setting
screen

[R]

[E]

[U]

[D]
[L]
8-5-2. Time setting

[U]

[D]

screen

[E]

SU-N

[L]
8-5-4. Password Setting
screens

[R]

[U]

[D]
SU-A

Figure 18 SETUP screen navigation 3

29

KRB-5433d

Table 12 SETUP subscreens
Screen
SU-A

SU-B

SU-C
(*2)

SU-D

Display

Setting range

Item

Type-G

Type-F, -T

STEP Remarks

ICT

CT primary current

10 to 1500 A

1

-

ICT2

CT secondary current

1A/5A

-

(*1)

In

Rated current

5.0 to 1500.0 A

0.1

The actual setting range is limited
to (0.5 to 1.0) × ICT according to
the setting of ICT.

Vn

Rated primary voltage

110 to 16000 V

1

-

Vn2

Rated secondary voltage

110 V / 220 V

-

-

V0n

Rated zero-phase voltage

190 V (Not adjustable)

-

-

Pn

Rated power

1

-

Fn

Frequency

60Hz / 50 Hz--

TOPOLOGY

Topology

1P3W / 3P3W--

DEMAND TIME

Demand power
measurement interval

5 min / 30 min / 60 min--

P/M POWERPower monitoring:
Monitored power

P/M RYPower monitoring: Relay
setting

Automatic calculation(√3 * In * Vn * 0.8 )1 to 9000 kW

100 to 9999 kW

-

1

-

OFF / RY6

-

-

-

RY 1
RY 2
RY 3
Relay output mode

HOLD/PULSE-

This item can be set individually foreach relay output.

RY MODE

Lockout relay:
Output mode

HOLD/PULSE--RY ENABLE

Lockout relay:
Output setting

OFF / ON--UVT ENABLE

Lockout relay:
UVT setting

OFF / ON-

To use this setting, "LOCKOUT RY
ENABLE" must be set to ON.

I1 ADJUST

Phase1 (R-phase) current
adjustment range

90.0 to 110.0%

0.1

I2 ADJUST

Phase 2 (S-phase) current
adjustment range

90.0 to 110.0%

0.1

I3 ADJUST

Phase3 (T-phase) current
adjustment range

90.0 to 110.0%

0.1

U ADJUSTLine voltage adjustment
range

90.0 to 110.0%

0.1

P ADJUST

Active power adjustment
range

90.0 to 110.0%

0.1

Q ADJUST

Reactive power
adjustment range

90.0 to 110.0%

0.1

CH* MODE

mode

NONE / CURRENT / VOLTAGE / ACTIVE
POWER / REACTIVE POWER / FREQUENCY/ PF-

This item specifies the function to
be allocated to the channel.

ZERO RANGE

4-mA output setting

FULL RANGE

20-mA output setting"ZERO RANGE / FULL RANGE setting range"(→P.31)--

ZERO ADJUST

4-mA output adjustment

90.0 to 110.0%

0.1-

FULL ADJUST

20-mA output adjustment

90.0 to 110.0%

0.1

-

SU-K

ADDRESS

Transmission address

1 to 31

1

-

(*4)

BAUDRATE

Transmission rate

9600/19200--

PARITY

ParityNONE/ODD/EVEN--

EARTHING SW

Display of earthing switch

ON/OFF-(*5)

CONNECT TYPE

Connect type

1 to 4-(*5)

BRIGHTNESS

Display brightness

10 to 100%

10-

CONTRAST

Display contrast

10 to 100%

10

-

RY 4
RY 5
RY 6
RY 7
SU-E

SU-F

SU-G
SU-H
SU-I
SU-J
(*3)

SU-L

*1: Specified at the time of ordering.
*2: Implemented for Type-G only.
*3: Not displayed without the Type-F monitoring function.
*4: Displayed when there is a communication function.
*5: Refer to "8-4. MONITOR Screens " for the display by each selection.

30

KRB-5433d

This item is used for fineadjustment between the value
actually measured at the installation
location and the measured value
displayed.

Screen
SU-M
SU-N

Display

Setting range

Item

Type-G

Type-F, -T

STEP

Remarks

yyyy/mm/dd

Date2000/1/1 to 2099/12/31--

hh: mmTime

00: 00 to 23: 59--0000 to 9999-

Any number (four digits) (*6)

PASSWORD CHANGE Password change*6: Default passoword is “0000”

Table 13 ZERO RANGE / FULL RANGE setting range
MODE

ZERO RANGEFULL RANGE

Setting range

STEP

Setting range

None

-

-

-

-

Current

0A-(1.00 to 1.20)×Ict

0.01

Voltage

STEP

0V

-

3000 to 16000 V

1

Active power-36000 to 0 kW

1

1 to 36000 kW

1

Reactive power-36000 to 0 kVar

1

1 to 36000 kVar

1Frequency

45.00 to 65.00 Hz

0.01

46.00 to 66.00 Hz

0.01

Power factor

LEAD: 0.50 to 0.99

0.01

LAG: 0.50 to 1.00

0.01

31

KRB-5433d

8-5-1. Date setting screen
Figure 19 show the date setting screen navigation. Refer to Table 14 for items that are actually displayed on the screen.

SU-M-2 (change before)

SU-M-3

SU-M-4SU-M-5

[L]

[L]

[L]

[E]

[R]

[R]

[E]
SU-M-2 (change after)

Confirm pop-up[L] Cancel[E] Change

Figure 19 Date setting screen navigation

Table 14 Date setting subscreens
Screen

Display/setting item

Setting range

STEP

-

-

Year setting

2000 to 2099

1

Month setting

1 to 121

Day setting

1 to 31

1

SU-M-2

Setting item selection

SU-M-3
SU-M-4SU-M-5

Remarks
Press the [U] button to increase the value, and press the [D] button to decrease thevalue.

32

KRB-5433d

8-5-2. Time setting screen
Figure 20 show the time setting screen navigation. Refer to Table 15 for items that are actually displayed on the screen.

SU-M-6 (change before)

SU-M-7

SU-M-8

[L]

[L]

[E]

[R]

[E]
SU-M-6 (change after)

Confirm pop-up[L] Cancel[E] Change

Figure 20 Time setting screen navigation

Table 15 Time setting subscreens
Screen

Display/setting item

Setting range

STEP

-

-

-

Hour setting

0 to 23

1

Minute setting

0 to 59

1

Press the [U] button to increase the value, and press the [D] button to decrease thevalue.

SU-M-6

Setting item selection

SU-M-7
SU-M-8Remarks

33

KRB-5433d

8-5-3. Password Authentication Screens
Password authentication is required in the following cases:• When setting items are changed (authentication is required only for the first time unless the user navigates to otherscreens using the MENU button)• When the password is changed• When setting items are changed after the password has been changed• When histories are deleted from the maintenance screen

Figure 21 shows the password authentication screen navigation. Refer to Table 16 for items that are actually displayed on

the screen.

Password is OK
Previous screen

Password is unacceptable
[L]

[E]

[E]

P-1

P-2

P-3

P-4

[L]

[L]

[L]

[R]

[R]

[R]

Figure 21 Password authentication screen navigation

Table 16 Password authentication subscreens
Setting range

STEP

P-1

ScreenPassword input: 1st digit

Display/setting item

0 to 91

P-2

Password input: 2nd digit

0 to 91

P-3

Password input: 3rd digit

0 to 91

P-4

Password input: 4th digit

0 to 91

Remarks

Press the [U] button to increase the value, and press the [D] button to decrease thevalue.

34

KRB-5433d

8-5-4. Password Setting screensFigure 22 shows the password setting screen navigation. Refer to Table 17 for items that are actually displayed on the screen.
SU-N

[L]
Password authentication
screen[E][L]

Password is OK

SU-N-2

SU-N-3

SU-N-4

SU-N-5

[L]

[L]

[L]

[R]

[R]

[R]

[E]
SU-N

Confirm pop-up[L] Cancel[E] Change

Figure 22 Password setting screen navigation
Default passoword is “0000”

Table 17 Password setting subscreens
Setting range

STEP

SU-N

ScreenPassword change screen

Display/setting item--

SU-N-2

Password setting: 1st digit

0 to 91

SU-N-3

Password setting: 2nd digit

0 to 91

SU-N-4

Password setting: 3rd digit

0 to 91

SU-N-5

Password setting: 4th digit

0 to 91

Remarks
Initial display

Press the [U] button to increase the value, and press the [D] button to decrease thevalue.

35

KRB-5433d

8-6. SETTING ScreensFigure 23 shows the SETTING screen navigation. For each screen, refer to the relevant chapters.
S-A[L]
8-5. SETUP Screens

[R]

[U]

[D]

S-B

[L]
8-6-1. SETTING (S-B)
Screen

[R]

[U]

[D]

S-C

[L]
8-6-2. SETTING (S-C)
Screen

[R]

[U]

[D]
(*1)

S-D

[L]
8-6-3. SETTING (S-D)
Screen

[R]

[U]

[D]

S-E

[L]
8-6-4. SETTING (S-E)
Screen

[R]

[U]

[D]
SU-A

Figure 23 SETTING screen navigation*1: Not displayed in Type-F.

36

KRB-5433d

8-6-1. SETTING (S-B) Screen
Since the screen configuration differs depending on the type, the screens is explained for each type.

Type-G
Figure 24 to Figure 25 show the SETTING (S-B) screen navigation for Type-G. Refer to Table 18 for items that are
actually displayed on the screen.
S-B

ST-A

[L]

[L]

[L]

[R]

[R]

[E]

[U]

[D]

ST-AD

[L]
[U]

[D]
[E]

8-8. Change Settings
ST-B

[L]

[L]

[R]

[E]

[U]

[D]

ST-BD

[L]
[U]

[D]
[E]

Figure 24 SETTING (S-B) screen navigation 1 (Type-G)

37

KRB-5433d

[U]

[D]

ST-C

[L]

[L]

[R]

[E]

[U]

[D]

ST-CD

[L]
[U]

[D]
[E]

8-8. Change Settings
ST-D

[U]

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

[D]

ST-E

[U]

[D]
ST-A

Figure 25 SETTING (S-B) screen navigation 2 (Type-G)

38

KRB-5433d

Table 18 SETTING (S-B) subscreens (Type-G)
Screen
ST-A

ST-AD

ST-B

ST-BD

ST-C

ST-CD

ST-D

ST-E

Display

Item

Setting range

STEP

Remarks

LT SETTING 1

Long time-delay setting 1

MODE

Mode

OFF / TRIP-

L/T CURR

Pickup current(0.80 to 1.15) × In

0.01 -

L/T TIME

Activation time limit

15.00 to 60.00 s

0.01 -

RY

Output relay

(*1)

-

-

LT SETTING 2Long time-delay setting 2

MODE

Mode

OFF / TRIP--

L/T CURR

Pickup current(0.80 to 1.15) × In

0.01 -

L/T TIME

Activation time limit

15.00 to 60.00 s

0.01 -ST SETTING 1

Short time-delay setting 1

MODE

Mode

S/T CURR

Pickup current

S/T TIME
S/T I2T
RY

Output relay

ST SETTING 2

Short time-delay setting 2

MODE

Mode

S/T CURR

Pickup current

S/T TIME-

OFF / TRIP-

(2.00 to 5.00) × In

0.01 --

Activation time limit

0.10 to 1.00s

0.01 -

I2T characteristics

OFF / ON

-

-

(*1)

-

-

OFF / TRIP--

(2.00 to 5.00) × In--

Activation time limit

0.10 to 1.00s--

S/T I2TI2T characteristics

OFF / ON--

INST SETTING 1

Instantaneous setting 1

MODE

Mode

-

-

INST CURR

Pickup current(2.00 to 24.00) × In

RY

Output relay(*1)

INST SETTING 2

Instantaneous setting 2

MODE

Mode

INST CURR

Pickup current

PTA

Pre-trip alarm

MODE

Mode

PTA CURR

Pickup current

PTA TIME

Activation time limit

PTA 2Pre-trip alarm 2

MODE

Mode

PTA2 CURR

Pickup current

PTA2 TIME

Activation time limit

OFF / TRIP

OFF / TRIP
(2.00 to 24.00) × In

0.01 The maximum value is Ict × 16.
-

-

-

-

0.01 The maximum value is Ict × 16.

OFF / ALARM-(0.75 to 1.05) × In

0.01 --

10.0 to 30.0s

0.1-

OFF / ALARM-(0.75 to 1.05) × In

0.01 -

15.0 to 45.0s

0.1-*1: Refer to 8-8-3. Relay Setting Operation.

39

KRB-5433d

Type-F, T
Figure 26 to Figure 27 show the SETTING (S-B) screen navigation for Tye-F, T. Refer to Table 19 for items that are
actually displayed on the screen.
S-B

ST-A

[L]

[L]

[L]

[R]

[R]

[E]

[U]

[D]

ST-AD

[L]
[U]

[D]
[E]
8-8. Change Settings

ST-B

[L]

[L]

[R]

[E]

[U]

[D]

ST-BD

[L]
[U]

[D]
[E]

Figure 26 SETTING (S-B) screen navigation 1 (Type-F, T)

40

KRB-5433d

[U]

[D]

ST-C

[L]

[L]

[R]

[E]

[U]

[D]

ST-CD

[L]
[U]

[D]
[E]

8-8. Change Settings
ST-D

[L]

[L]

[R]

[E]

[U]

[D]

ST-DD

[L]
[U]

[D]
[E]

ST-A

Figure 27 SETTING (S-B) screen navigation 2 (Type-F, T)

41

KRB-5433d

Table 19 SETTING (S-B) subscreens (Type-F, T)
Screen
ST-A

ST-AD

ST-B

ST-BD

ST-C

ST-CD

ST-D

ST-DD

DisplayItem

LT SETTING 1

Long time-delay setting 1

MODE

Mode

Setting range

STEP

OFF / TRIP

Remarks

-

-

-

-

CHARACTER

Characteristic

SIT (power of 0.02) / VIT (power of 1) / EIT(power of 2)

L/T CURR

Pickup current(0.80 to 1.10) × In

0.01 -

L/T TIME

Activation time limit

1.00 to 10.00 s

0.01 -

RY

Output relay

(*1)

-

-

LT SETTING 2Long time-delay setting 2

MODE

Mode

OFF / TRIP

-

-

-

-

CHARACTER

CHARACTER

SIT (power of 0.02) / VIT (power of 1) / EIT(power of 2)

L/T CURR

Pickup current(0.80 to 1.10) × In

0.01 -

L/T TIME

Activation time limit

1.00 to 10.00 s

0.01 -ST SETTING 1

Short time-delay setting 1

MODE

Mode

S/T CURR

Pickup current

S/T TIME
S/T I2T
RY

Output relay

ST SETTING 2

Short time-delay setting 2

MODE

Mode

S/T CURR

Pickup current

S/T TIME

OFF / TRIP-

(1.00 to 10.00) × In

0.01 --

Activation time limit

0.05 to 0.80s

0.01 -

I2T characteristics

OFF / ON

-

-

(*1)

-

-

OFF / TRIP--

(2.00 to 10.00) × In--

Activation time limit

0.05 to 0.80s--

S/T I2TI2T characteristics

OFF / ON--

INST SETTING 1

Instantaneous setting 1

MODE

Mode

-

-

INST CURR

Pickup current(2.00 to 24.00) × In

RY

Output relay(*1)

INST SETTING 2

Instantaneous setting 2

MODE

Mode

INST CURR

Pickup current

PTA SETTING 1

Pre-trip alarm setting 1

MODE

Mode

OFF / ALARM--

CHARACTER

Characteristic(Linked with "CHARACTER" in the Long
time-delay setting 1)--

PTA CURR

Pickup current(0.75 to 1.10) × In

0.01 -

PTA TIME

Activation time limit

0.5 to 10.0s

0.1-

PTA SETTING 2

Pre-trip alarm setting 2

MODE

Mode

OFF / TRIP

OFF / TRIP
(2.00 to 24.00) × In

0.01 The maximum value is Ict × 16.
-

-

-

-

0.01 The maximum value is Ict × 16.

OFF / ALARM

-

-

-

-

CHARACTER

Characteristic(Linked with "CHARACTER" in the Long
time-delay setting 2)

PTA CURR

Pickup current(0.75 to 1.10) × In

0.01 -

PTA TIME

Activation time limit

0.5 to 10.0s

0.1*1: Refer to 8-8-3. Relay Setting Operation.

42

KRB-5433d-

8-6-2. SETTING (S-C) Screen
Figure 28 show the SETTING (S-C) screen navigation. Refer to Table 20 for items that are actually displayed on thescreen.
S-C

ST-F

[L]

[L]

[L]

[R]

[R]

[E]

[L]

[L]

[R]

[E]

[L]

[L]

[U]

[D]

ST-G

[U]

[D]

ST-H

8-8. Change Settings

[U]

[R]

[E]

[L]

[L]

[R]

[E]

[L]

[L]

[R]

[E]

[D]

ST-I

[U]

[D]

ST-J

[U]

[D]
ST-F

Figure 28 SETTING (S-C) screen navigation

43

KRB-5433d

Table 20 SETTING (S-C) subscreens
Screen
ST-F

ST-G

ST-H

ST-I

ST-J

Display

Item

Setting range
Type-G

Type-F, T

STEP

Remarks

UNBALANCE

Negative phase sequence

MODE

Mode

OFF / ALARM / TRIP-

U/B CURR

Pickup current(0.10 to 1.00) × In

0.01 -

U/B TIME

Activation time limit

1.0 to 30.0s

0.1

-

RY

Output relay

(*1)

-

-

DGR

Directional ground fault

MODE

Mode

OFF / ALARM / TRIP--

DGR CURR

Pickup current

1.0 to 10.0mA

0.1-

DGR VOLT

Pickup voltage(0.050 to 0.150) × V0n0.001 -

DGR TIME

Activation time limit

0.2 to 10.0s

0.1-

DGR PHASE

Phase

0 to 90°/ OFF

10

The OFF setting is a non-directionalsetting.

RY

Output relay

(*1)

-

-

OVGR

Ground fault overvoltage

MODE

Mode

OFF / ALARM / TRIP--OVGR VOLT

Pickup voltage(0.050 to 0.150) × V0n0.001 -OVGR TIME

Activation time limit

0.1 to 1.0s

0.1

-

RY

Output relay

(*1)

-

-

UNDER VOLTAGE

Undervoltage

MODE

Mode

OFF / TRIP--

U/V REC VOLT

Reset voltage(0.80 to 0.95) × Vn

0.01 -

U/V SET VOLT

Set voltage(0.40 to 0.80) × Vn

0.01 -

U/V TIME

Activation time limit

0.1 to 36.0s

0.1

-

RY

Output relay

(*1)

-

-

OVER VOLTAGE

Overvoltage

MODE

Mode

-

O/V VOLT

Set voltage

O/V TIME

Activation time limit

RY

Output relay*1: Refer to 8-8-3. Relay Setting Operation.

44

KRB-5433d-

OFF / TRIP-

(1.05 to 1.50) × Vn

0.01 -

0.1 to 5.0s

0.1

-

(*1)

-

-

8-6-3. SETTING (S-D) Screen
Since the screen configuration differs depending on the type, the screens is explained for each type.

Type-G
Figure 29 and Figure 30 show the SETTING (S-D) screen navigation for Type-G. Refer to Table 21 for items that are
actually displayed on the screen.
S-D

ST-K

[L]

[L]

[L]

[R]

[R]

[E]

[L]

[L]

[R]

[E]

[U]

[D]

ST-M

[U]

[D]

ST-MD

[L]
8-8. Change Settings

[U]

[D]
[E]

ST-N

[L]

[L]

[R]

[E]

[U]

[D]

ST-N2

[L]
[U]

[D]
[E]

[U]

[D]

Figure 29 SETTING (S-D) screen navigation 1 (Type-G)

45

KRB-5433d

[U]

[D]

ST-N3

[L]
[U]

[D]
[E]
8-8. Change Settings

ST-O

[U]

[L]

[L]

[R]

[E]

[D]
ST-K

Figure 30 SETTING (S-D) screen navigation 2 (Type-G)

46

KRB-5433d

Table 21 SETTING (S-D) subscreens (Type-G)
Screen
ST-K

ST-M

ST-MD

ST-N
ST-N2

ST-N3

ST-O

Display

Item

Setting range

STEP

Mode

OFF / ALARM / TRIP--

CB AUX state

NORMAL / CB ON--

DIFF RATIO

Set differential current(0.10 to 0.50) × i1

i1 = I1 ×ICT2 / ICT
0.01 I1: Applied current on the primaryside of generator

LIMIT RATIO

Limit differential current(0.10 to 0.50) × Ict

0.01 -

DIFF TIME

Activation time limit

0.2 to 10.0s

0.1

-

RY

Output relay

(*1)

-

-

RP SETTING 1

Reverse power setting 1

MODE

Mode

OFF / ALARM / TRIP--

R/P POWER

Pickup power(0.04 to 0.10) × Pn

0.01 -

R/P TIME

Activation time limit

2.5 to 20.0s

0.1

-

RY

Output relay

(*1)

-

-

RP SETTING 2

Reverse power setting 2

MODE

Mode

OFF / ALARM / TRIP--

R/P POWER

Pickup power(0.04 to 0.10) × Pn

0.01 -

R/P TIME

Activation time limit

2.5 to 20.0s

0.1-

FREQUENCY RELAY

Frequency relay protection

MODE

Mode

OFF / ALARM / TRIP--

UNDER FREQUENCY

Underfrequency

U/F FREQ

Pickup frequency(0.80 to 1.05) × Fn

0.01 -

U/F TIME

Activation time limit

1.0 to 10.0s

0.1

-

RY

Output relay

(*1)

-

-

OVER FREQUENCY

Overfrequency

O/F FREQ

Pickup frequency(0.95 to 1.40) × Fn

0.01 -

O/F TIME

Activation time limit

1.0 to 10.0s

0.1

-

RY

Output relay

(*1)

-

-

(0.80 to 1.05) × Vn

0.01 -

0.1 to 30.0s

0.1

DIFF CURRENT

Differential current

MODE
OPERATION

Remarks

VOLTAGE ESTABLISH Voltage establishment
V/E ON VOLT

Established voltage

V/E ON TIME

Establishment activation
time limit

V/E OFF VOLT

Dropout voltage(0.40 to 0.80) × Vn

0.01 -

V/E OFF TIME

Dropout time

1.0 to 5.0s

0.1

-

RY

Output relay

OFF / RY7-

If RY7 is set, RY7 cannot be
selected for other protection.

-*1: Refer to 8-8-3. Relay Setting Operation.

47

KRB-5433d

Type-T
Figure 31 show the SETTING (S-D) screen navigation for Type-T. Refer to Table 22 for items that are actually displayedon the screen.
S-D

ST-L

[L]

[L]

[L]

[R]

[R]

[E]

[U]

8-8. Change Settings

[D]

ST-L2

[L]

[E]

Figure 31 SETTING (S-D) screen navigation (Type-T)

Table 22 SETTING (S-D) subscreens (Type-T)
Screen
ST-L

ST-L2

Display

Item

Setting range

STEP

Mode

OFF / ALARM / TRIP--

TR TYPE

Transformer wiring
methodY-Y / △-△ / △-Y / Y-△--

PRIM CURR (IDFP)

Transformer primary
current ratio(0.30 to 1.20) × Ict

0.01 -SEC CURR (IDFS)

Transformer secondary
current ratio(0.30 to 1.20) × Ict

0.01 -

INST RATIOHigh speed over current
setting(5.00 to 15.00) × i1

0.01 -

RY

Output relay

(*1)

-

DIFF CURRENT

Differential current

DIFF RATIO

Set differential current(0.20 to 0.50) × i2

0.01 i2 = i1 × IDFS / IDFP

LIMIT RATIO

Limit differential current(0.30 to 0.50) × IDFS

0.01 -

2nd HMC RATIO

Second harmoniccomponent ratio

0.10 to 0.30

0.01 -

DIFF TIME

Activation time limit

0.20 to 5.00s

0.01 -

DIFF CURRENT

Differential current

MODE*1: Refer to 8-8-3. Relay Setting Operation.

48

KRB-5433d

Remarks-

8-6-4. SETTING (S-E) Screen
Figure 32 shows the SETTING (S-E) screen navigation. Refer to Table 23 for items that are actually displayed on the screen.
S-E

ST-P

[L]

[L]

[L]

[R]

[R]

[E]

[L]

[L]

[U]

[D]

ST-Q

8-8. Change Settings

[R]

[E]

[L]

[L]

[R]

[E]

(*1)

[U]

[D]

ST-R

[U]

[D]
ST-P

Figure 32 SETTING (S-E) screen navigation

Table 23 SETTING (S-E) subscreens
Screen

Display

ST-P-1REMOTE TRIP

External trip

MODE

Mode

RY

Output relay

SYSTEM ALARM

System alarm

MODE

Mode

RY

Output relay

ST-R-1

ARC DETECTION

Arc detection

(*1)

MODE

Mode

ARC CURR
RY

ST-Q-1

Item

Setting range
Type-G

Type-F, T

STEP

Remarks

OFF / TRIP

-

-

(*2)

-

-

OFF / ALARM

-

-

(*2)

-

-

OFF / ALARM / TRIP--

Pickup current(0.5 – 6.0) × ICT

0.1

The operation time limit is within
10ms.

Output relay

(*2)

-

-

*1: Displayed only when the ARC function is available*2: Refer to 8-8-3. Relay Setting Operation.

49

KRB-5433d

8-7. MAINTENANCE ScreensFigure 33 shows the MAINTENANCE screen navigation. For each screen, refer to the relevant chapters.
MA-B

[L]

[L]
8-7-1. Protectivefunction test

[R]

[R]

[U]

[D]

MA-C-1

[L]

[R]

[U]
[U]

8-7-2. Relay output test

[D]

MA-C-2

[D]

[L]

[R]

MA-E

[L]
8-7-3. Data Initialization
Screen

[R]

[U]

[D]

MA-HIST[L]
8-7-4. History Screens

[R]

[U]

[D]

Figure 33 MAINTENANCE screen navigation 1

50

KRB-5433d

[U]

[D]

MA-I

[L]

[R]

[U]

[D]
(*1)

MA-J

[L]

[R]

[U]

[D]

MA-J-2

[U]

[D]

MA-B

Figure 34 MAINTENANCE screen navigation 2

51

KRB-5433d

Table 24 MAINTENANCE subscreens
ScreenMA-B

MA-C-1

MA-C2

MA-E

MA-I

MA-J
(*1)

MA-J-2(*1)

Display

Item

Setting range

Remarks

FUNCTION TEST

Function test

O/C LONGLong time-delay tripping

TRIP / NONE TRIP-

O/C SHORT

Short time-delay tripping

TRIP / NONE TRIP-

O/C INST

Instantaneous tripping

TRIP / NONE TRIP-

O/C PTA

Pre-trip alarm

ALARM / NONE ALARM-RELAY TEST

Relay test (1)RY 1

Relay 1

-

-

RY 2

Relay 2

-

-

RY 3

Relay 3

-

-

RY 4

Relay 4

-

-

RY 5

Relay 5

-

-

RY 6

Relay 6--RELAY TEST

Relay test (2)RY 7

Relay 7--RY PTA

Pre-trip alarm relay--

RY PTA2

Pre-trip alarm relay 2-

Displayed only for Type-G

RY LOCKOUT

Lockout relay--

RY TRIP1

Trip relay--

RY TRIP2

Trip relay 2--

DATA CLEAR

Data initialization

TRIP HISTORY

Trip history-

All data is reset at once.

ALARM HISTORY

Alarm history-

All data is reset at once.

EVENT HISTORY

Event history-

All data is reset at once.

MAX DATA

Maximum value data--

DEMAND DATA

Demand data--

ENERGY DATAElectric power data

-

-

INFO

System Information

PROTECTION

Protection version--

DISPLAY

Display version--

COMM RECEIVE COUNT Reception countOK

Number of normal data
packets received

0 to 65535-

NG PARITY

Number of parity errors

0 to 65535

Number of data packets containing parity errors

NG CRC

Number of CRC errors

0 to 65535

Number of data packets containing CRC errors

COMM SEND COUNT

Transmission countOK

Number of normal data
packets sent

0 to 65535-

NG FUNCTION

Number of invalid functions

0 to 65535

Unsupported function code

NG ADDRESS

Number of invalid addresses

0 to 65535

No address

NG DATA

Number of invalid data values

0 to 65535

Invalid data values*1: Displayed when there is a communication function.

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KRB-5433d

8-7-1. Protective function test
Tests can be conducted using the long time-delay tripping, short time-delay tripping, instantaneous tripping, and pre-trip
alarm functions. Figure 35 shows the protective function test screen transitions. Refer to Table 25 for behaviors, LED
states, and other information during testing.
When the test is suspended because of a particular situation(*2) or when [E] is pressed
Previous
screen

[L]
[L]

[E]

[R]

[R]

Switch the selection with [U] or [D] buttons.

The screen changes due to a trip or alarm.

TR-A

AL-A

[M]
or

To turn off the LED or relay output after the test, press [RST].

Figure 35 Protective function test screen navigation*1: In the following cases, after [E] is pressed, no test is started and the display returns to the MA-B screen.
• When the device to be tested is set to OFF• When an applied current value equal to or greater than Ict×10% is detected• When the state of a trip or alarm has not been reset after they occurred*2: In the following cases, the test is suspended and the display returns to the MA-B screen.
• When an applied current value equal to or greater than Ict×10% is detected• When a trip or alarm occurs

Table 25 Each state after protective function test
Test conducted

Screen refresh

Individual LED states[TRIP/ALARM]
LED state

During pickup

After activation

Relay
activation

Log update
UpdatedTRIP

TRIP incident screen (AL-A)

Lit in red

Blinking in red

Lit in red

Activated

ALARM

ALARM incident screen (TR-A)

Blinking in red

Blinking in red

Unlit

Activated

UpdatedNONE TRIP

No refresh

Unlit

Blinking in red

Unlit

Not activatedNot updated

NONE ALARM

No refresh

Unlit

Blinking in red

Unlit

Not activatedNot updated

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KRB-5433d

8-7-2. Relay output test
Test the signal output by manipulating the contacts directly. To stop the output after the relay is operating, press the [RST]button displayed at the bottom right of the screen to stop the output. (In the case of pulse output, it will be reset
automatically.) Figure 36 shows the screen transition of the relay output test.

Previous screen[L] Don’t output[E][RST] Stop output
Previous screen

Confirm pop-up[E] Output (*1)

The symbol disappears when the relay is activated.

Figure 36 Relay output test screen navigation*1: Even if [E] is pressed during relay output, the relay will not be activated.

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KRB-5433d

8-7-3. Data Initialization Screen
Figure 37 shows the data initialization screen navigation.
If you press the [R] button from the previous screen for the first time after moving the menu with the [M] button, the password
authentication screen (P.34) is displayed.

[U] or [D] buttons to switch the item to be initialized.
Previous screen

[L]

[R]

[E]

Confirm pop-up

Initialize [E]Cancel [L]Figure 37 Data initialization screen navigation

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KRB-5433d

8-7-4. History ScreensFigure 38 shows the history (trip, alarm, event) screen navigation. Refer to Table 26 for items that are actually displayedon the screen.
Latest history
MA-HIST

MA-F-0MA-G-0MA-H-0

[L]

[L]

[L]

[R]

[R]

[R]

[U]

[D]

[U]

MA-F-1

[U]

[D]

[U]

[D]

MA-G-2 ～ MA-G-19

[D]

[U]

MA-F-20

MA-G-20

Figure 38 History screen navigation

56

[U]

[D]

[U]

[D]

MA-H-1[U]

MA-F-2 ～ MA-F-19

KRB-5433d[D]

MA-G-1

MA-H-2 ～ MA-H-39

[D]

[U]
MA-H-40[D]

Table 26 History subscreens
Screen

Display

Item

Remarks

MA-F-0LATEST TRIP

Trip activation data

This screen displays the occurrence date and time, cause, phase, concerned value,
and operating time for the latest trip activation.

MA-G-0LATEST ALARM

Alarm activation data

This screen displays the occurrence date and time, cause, phase, concerned value,
and operating time for the latest alarm activation.

MA-H-0LATEST EVENT

Event occurrence data

This screen displays the occurrence date and time and description for the latest eventthat has occurred.

MA-F-1 to 20

TRIP HISTORY

Trip activation history

This screen displays the occurrence dates and times, causes, phases, concernedvalues, and operating times for the recorded trip activations in chronological order.
The user can view only five histories per screen, but can view up to 100 histories byscrolling the screen with the [U] and [D] arrow buttons.

MA-G-1 to 20

ALARM HISTORY

Alarm activation history

This screen displays the occurrence dates and times, causes, phases, concernedvalues, and operating times for the recorded alarm activations in chronological order.
The user can view only five histories per screen, but can view up to 100 histories byscrolling the screen with the [U] and [D] arrow buttons.

MA-H-1 to 40

EVENT HISTORY

Event occurrence history

This screen displays the occurrence dates and times and descriptions for the recorded
events in chronological order.
The user can view only five histories per screen, but can view up to 200 histories byscrolling the screen with the [U] and [D] arrow buttons.

* For details on how to view the screen contents, refer to "8-9. Display Contents of History and Incident Screens".

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KRB-5433d

8-8. Change Settings
When the [E] button is pressed from the previous screen for the first time after moving the menu with the [M] button, thepassword authentication screen (P.34) is displayed.

8-8-1. Numerical change
If the value to be changed is a numerical value, you can change the numerical value of each digit with the [U] or [D] button.
The [L] or [R] button is used to move the digit, but if you press the [L] button on the most significant digit, editing iscanceled and the screen returns to the transition source screen. Figure 39 shows the screen transition of numericalsetting.
Previous screen (before)[E]
Increase or decrease the underlined number with [U]or [D] buttons.

[L]
[L]

[L]

[L]

[R]

[R]

[R]

[E]
Previous screen (after)

Confirm pop-up[E] Change

Previous screen (before)[L] Cancel

Figure 39 Numerical change screen navigation

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KRB-5433d

8-8-2. Selection change
If the value to be changed is in the selection format, switch the selection with the [U] or [D] button. Figure 40 shows thescreen navigation of the selection setting.

Switch the selection with [U] or [D] buttons.
Previous screen (before)

[L]

[R]
[L] Cancel[E]

Previous screen (after)

Confirm pop-up[E] Change

Figure 40 Selection change screen navigation

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KRB-5433d

8-8-3. Relay Setting Operation
Figure 41 shows the relay setting screen transitions. Refer to Table 27 for items that are actually displayed on the screen.

Swith ON/OFF with [U] or [D] buttons.
Previous screen (before)

[L]

[L]

[L]
Move the cursor position
left or right with [L] or [R]buttons

[E]

[R]

[R]

[L] Cancel[E]

Previous screen (after)

Confirm pop-up[E] Change
ON
OFF
Disabled＊＊＊

Figure 41 Relay setting screen navigation

Table 27 Relay setting subscreens (RY1 to RY7)
Display

Item

Setting range
PRS1H-G

PRS1H-F, T

STEP

Remarks

RY1

Relay 1 selection

OFF / ON

-

-

RY2

Relay 2 selection

OFF / ON

-

-

RY3

Relay 3 selection

OFF / ON

-

-

RY4

Relay 4 selection

OFF / ON

-

-

RY5

Relay 5 selection

OFF / ON

-

-

RY6

Relay 6 selection

OFF / ON*

OFF / ON-*: If "P/M RY" in the SU-C-1 screen is set to "RY6", this item
cannot be set.

RY7

Relay 7 selection

OFF / ON*

OFF / ON-*: If "RY" in the ST-O-1 screen is set to "RY7", this item
cannot be set.

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KRB-5433d

8-9. Display Contents of History and Incident ScreensFigure 42 shows the trip/alarm activation history screen and trip/alarm activation incident screen, and Table 28 and Table
29 explain the contents of these screens.

①
①

①
②
③
④
⑤

⑥ ③

History screen (trip/alarm)

④

②
③
④
⑤

⑤

History list screen (trip/alarm)

Accident screen (trip/alarm)

Figure 42 Trip/alarm activation history screen and incident screen

Table 28 Display items in trip/alarm activation history screen and incident screen
No.

Display contents①

Displays the date and time when the trip or alarm occurred②

Displays the message for the cause of the trip or alarm activation③

Displays the phase (1 to 3) where the trip or alarm occurred* For output test, "TEST" is displayed on the incident screen and "Te" is displayed on the history list screen.

④

Displays the value at which the trip or alarm occurred⑤

Displays the time when the trip or alarm activation was displayed⑥

Displays the abbreviation of the message for the cause of the trip or alarm activation* For messages and the units of value, refer to the following table.

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KRB-5433d

Table 29 Messages and the units of value for the cause of trip or alarm
Cause of activation display②

Description⑥

Units of incident value

Units of incident time④⑤

LONG TIME

LTLong time-delay tripping activationAs

SHORT TIME

ST

Short time-delay tripping activation

As

INSTANTANIOUS

INST

Instantaneous tripping activationkA-

PRE TRIP ALARM

PTA

Pre-trip alarmAs

PRE TRIP ALARM 2

PTA2Pre-trip alarm 2As

REVERSE POWER

RP

Reverse power

W or kW (*1)

s

NS CURRENT

NS

Negative phase sequenceAs

UNDER FREQ

UF

Underfrequency

Hzs

OVER FREQOF

Overfrequency

Hzs

DIFF CURRENT

DIFF

Differential current

A

s

OVGR

OVGR

Ground fault overvoltage

V

s

DGR

DGR

Directional ground fault

mA

s

ARC

ARC

Arc detectionA-

UNDER VOLTAGE

UV

Undervoltage

Vs

OVER VOLTAGE

OV

Overvoltage

Vs

REMOTE TRIP

RT

External trip--

SYSTEM ALARM1

SYS1

System alarm 1--

SYSTEM ALARM2SYS2System alarm 2--

SYSTEM ALARM3

SYS3

System alarm 3--*1: If the reverse power exceeds 10,000 W, the unit will be changed to kW and any digits after the decimal point will be truncated.

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KRB-5433d

Figure 43 shows the event history screens, and Table 30 and Table 31 explain the contents of these screens.

①
①
⑧
⑦

Event history screen

Event history list screen

Figure 43 Event history screens

Table 30 Event history sbuscreensNo.

Display contents①

Displays the date and time when the event occurred⑦

Displays the message corresponding to the event⑧

Displays the simplified message corresponding to the event* For messages and their descriptions, refer to the following table.

Table 31 Event messages
Event message

Description

⑦⑧
TRIP

Trip occurred

ALARM

Alarm occurred

REMOTE TRIP

External trip occurred

RESET

Reset command was issued

EARTHING SWITCH ON

Earthing switch input turned ON

EARTHING SWITCH OFF

Earthing switch input turned OFF

RELAY TEST

Relay test was executed

DOUBLE SETTING ON

Double setting switch turned ON

DOUBLE SETTING OFF

Double setting switch turned OFF

CB ON

CB ON

CB OFFCB OFFRESET TRIP HISTORY

Trip histories were reset

RESET ALARM HISTORY

Alarm histories were reset

RESET EVENT HISTORY

Event histories were reset

RESET MAX VALUE

Maximum values were reset

RESET DEMAND MAX

Maximum demand values were reset

RESET ACCUMULATED ENERGY

Accumulated electric energy was reset

PRESS RESET BUTTON

Reset button was pressed

DETECTION VOLT ESTABLISH

Voltage establishment was detected

DETECTION MONITORING POWER

Monitored power was detected

NON OPERATION CB

VCB was not activated when a trip occurred

DISCONNECTION SHT CIRCUITSHT circuit wiring was broken

DISCONNECTION ARC SENSOR

Arc sensor connector wiring was broken

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KRB-5433d

8-10. Responses to Abnormal Events
 If internal CT circuit wiring is broken or another similar problem occurs, the system will blink the CPU lamp without
outputting data. If the problem is resolved, the system will be reset automatically. Even if automatic reset does notoccur, the system may be returned to normal operation by power cycling. If the system is still not restored, contactus.
 If an error occurs in the protective function or monitoring function, the self-diagnostic output terminal (21 - 22) will
start contact output. If the function is restored normally, the contact output will stop.
 In the following cases, values (set values or recorded values) are displayed as "---".
• Values outside the setting range for each setting item
• Values within the setting range for each setting item that deviate from the specified step
However, when such values are set, they may be displayed normally by pressing the [U] or [D] arrow button so thatthe value falls within the setting range. If values are not displayed normally, contact us.

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KRB-5433d

Circuit Breaker Division
6-13-47 Kamihigashi, Hiranoku, Osaka 547-0002, Japan
Tel: 81-6-6791-2763

Fax: 81-6-6791-2732

Web Site: http://www.terasaki.co.jp

E-mail: kiki-info@terasaki.co.jp

Published in Apr. 2021
Revised in Jan.2024

The contents of this manual may be subject to change without notice.
Recycle paper used.

KRB-5433d