PA-3000-H3 series (Three-phase)

Model
Control system

30A

50A

75A

100A

Rated current
150A
200A

250A
Phase control,
PA-3030-VH3 PA-3050-VH3 PA-3075-VH3 PA-3100-VH3 PA-3150-VH3 PA-3200-VH3 PA-3250-VH3
Voltage feedback
Phase control,
PA-3030-AH3 PA-3050-AH3 PA-3075-AH3 PA-3100-AH3 PA-3150-AH3 PA-3200-AH3 PA-3250-AH3
Current feedback
Phase control,
PA-3030-PH3 PA-3050-PH3 PA-3075-PH3 PA-3100-PH3 PA-3150-PH3 PA-3200-PH3 PA-3250-PH3
Power feedback
Phase control,
PA-3030-H3 PA-3050-H3 PA-3075-H3 PA-3100-H3 PA-3150-H3 PA-3200-H3 PA-3250-H3
No feedback
For a feedback type, 3 pieces of CT (Current transformer) are required for detection of load current and over-current.

300A

400A

500A

PA-3300-VH3

PA-3400-VH3 PA-3500-VH3

PA-3300-AH3

PA-3400-AH3 PA-3500-AH3

PA-3300-PH3

PA-3400-PH3 PA-3500-PH3

PA-3300-H3

PA-3400-H3

PA-3500-H3

Specifications
PhasesRated voltage
Rated current
Rated frequency
Allowable voltage fluctuation
Allowable frequency fluctuation
Control system
Arms
Feedback type
Control input signal
Remote setting input
Remote contact input
Remote CT input
Slope
Elevation
Soft start time
Current limit
Imbalance rate adjustment
Output range

Output accuracy

Applied load
Minimum load current

Alarm types

Alarm output points
Alarm output
Electrical life
Contact protection element

3 phases
200V AC (Selection with the 200V/220V/240V switch)
400V AC (Selection with the 380V/400V/440V switch), to be specified* With the standard specifications, the power supply to the main circuit and control circuit is common.
A special type using separate power supplies for the circuits can also be manufactured as an option.
30A, 50A, 75A, 100A, 150A, 200A, 250A, 300A, 400A, 500A to be specified
50/60 Hz (Automatic switching)±10% of the rated voltage±2 Hz of the rated frequency
Phase angle control, zero-cross control
6-arm
Voltage, current, power
4 to 20mA DC (input resistance approx. 100 Ω, max. allowable current 25mA DC)
1 to 5V DC(input resistance approx. 50 kΩ, max. allowable voltage 10V DC)
Trimmer signal (10 kΩ recommended, 2 to 20 kΩ allowable)
Non-voltage contact signal or open-collector signal (External contact capacity 1mA, 5V DC or more)
0 to 5A AC of the rated current
0% to 100% of the output range
0% to 100% of the output range
Approx. 1 to 20 sec.
0% to 100% of the output range
Output balance adjustment in the range of approx. 40% is enabled.
0 to 98% of the supply voltage
Without feedback: ±10% of the rated voltage
With voltage feedback: ±3% of the rated voltage(when rated voltage fluctuation is within ±10% and the load resistance fluctuation is within 1 to 10 times)
With current feedback: ±3% of the rated current(when rated voltage fluctuation is within ±10% and the load resistance fluctuation is within 1 to 10 times)
With power feedback: ±3% of the rated power(when rated voltage fluctuation is within ±10% and the load resistance fluctuation is within 1 to 3 times)
The accuracy is under the reference operating condition and in the range of 10% to 90% of the ratings and is not specified
under other conditions. The error of the CT is not included.
Resistive load, inductive load
The inductive load is applicable only in the control of the primary side of a transformer in the phase angle control method. The
flux density recommended for the transformer is 1.2 T or less.
0.5A or more (at 98% output at the rated voltage)
Over-current alarm(Alarm output: AL1)
Rapid-break fuse meltdown alarm(Alarm output: AL1)
Radiation fin over-heat alarm(Alarm output: AL1)
Heater disconnection alarm(Alarm output: AL2)
Thyristor element abnormality alarm(Alarm output: AL2)
Imbalance alarm(Alarm output: AL2)
Running abnormality alarm
Phase-sequence abnormality alarm(Alarm output: AL3)
Open-phase abnormality alarm(Alarm output: AL3)
Frequency abnormality alarm(Alarm output: AL3)
3 points (AL1, AL2, AL3)
Alarm output AL1, AL2 … When the alarm is activated, the output is turned on.
Alarm output AL3 … When the alarm is activated, the output is turned off.
Mechanical relay, Form A contact
Max. load 240V AC/1A, 30V DC/1A, min. load 5V DC/10mA or more
100,000 cycles or more
Not built inOver-current protection device
Remote setting types
Remote contact types
Cooling system

Rapid-break fuse is melted down when the load is short-circuited.
Output 0% (gate OFF) at approx. 120% of the rated current
The current limit function can set the upper current limit arbitrarily.
On the condition that a CT matching the rated current should be connected
Slope (AI1), Elevation (AI2), Current limit (AI3)
Running status (DI1: Run/Stop)
Control system (DI2: Phase angle control/zero-cross control)
Setting method (DI3: Front panel/Remote setting)Rated current 75 A or less: Natural air cooling
Rated current 100 A or more: Forced air cooling-10C to 55C
The following derating characteristic is applicable at 40C or more.
Allowable load
current (%)

Working temperature

Ambient temperature (°C)

Working humidity
Insulation resistance

30% to 90%RH, No condensation.
Between power supply terminal and protective conductor (GND) terminals: 500V DC/50MΩ or more
Between power supply terminal and protective conductor (GND) terminals: 2000V AC/1 min. (200V type)
Between power supply terminal and protective conductor (GND) terminals: 2500V AC/1 min. (400V type)
With the instrument with the cooling fan(s) (i.e. rated current 100A or more), the fan power cord should be unplugged (the cooling fan has awithstanding voltage of 2000V AC and should be eliminated).

Withstanding voltage

Rated current 30A, 50A, 75A
Rated current 100A
Rated current 150A, 300A
Rated current 200A, 250A, 400A, 500A

Power consumption

Rated current
30A
50A
75A
100A

Generated heat

External Dimensions
WeightCase assembly material
Color
Installation instruction

Reference operation condition

Normal operation condition

Storage condition

200V supply type
15VA
40VA
65VA
90VA

400V supply type
20VA
55VA
90VA
125VA

Rated current
250A
300A
400A
500A

Max. heat generation
920W
1100W
1530W
1980W

Max. heat generation
140W
180W
260W
380W

325 (H) x 200 (W) x 200 (D) (Rated current 30A/50A types)
325 (H) x 288 (W) x 220 (D) (Rated current 75A/100A types)
Excluding projections
Approx. 8 kg (Rated current 30A/50A types)
Approx. 13 kg (Rated current 75A/100A types)
Ordinary steel sheets
Gray
Panel installation
Ambient temperature : 23C ± 2C
Operating humidity: 55% ± 5%RH (No condensation)
Power voltage: Rated voltage ± 1%
Power frequency: Rated frequency
Installation posture: 0° Front, rear, left and right.
Ambient temperature : -10 to 55C
Operating humidity: 30% to 90%RH (No condensation)
Power voltage: Rated voltage ± 10%
Power frequency: Rated frequency ± 2 Hz
Installation posture: 5Front, rear, left and rightVibration/impact: None.
Altitude: 2000 m or lessAmbient temperature : -20 to 60C
Operating humidity: 5% to 90%RH (No condensation)
Under the shipment packing from factory

325 (H) x 420 (W) x 240 (D) (Rated current 150A to 250A types
495 (H) x 420 (W) x 240 (D) (Rated current 300A to 500A types)
Approx. 22 kg (Rated current 150A to 250A types)
Approx. 36 kg (Rated current 300A to 500A types)

External dimensions (Scale: mm)
Rated current: 75 A/100 A

ø18

210

ø9

12

30

30

ø9

12

Rated current: 30 A/50 A

U1 U2

V1 V2

W1 W2

200
Main circuit terminals M5

94.5

13

28 33 28 33 28200

28 56 28 56 28
288
Main circuit terminals M6

13

15

15

U1 U2 V1 V2 W1 W2

325

Setting terminalsM3
Protective
Conductor
Terminal M4

300

280

Protective
Conductor
Terminal M4

300

280

Setting
terminals M3

325

ø18

19

110.5
220

Rated current: 300 A/400 A/500 A

ø9

260

ø9

30

260

12

Rated current:150 A/200 A/250 A

30

12

ø18

70

67

70

*131
70

240

420
Main circuit terminals
M10

495

V2 W1 W2
25

70

67

13

25

25

W2

*M12

67 3337 67

10
70

420

Protective conductor
terminal M4

65

Main circuit
terminals
U1 U2 V1

470

325

270

300

W1

V2

V1

Setting terminals M3
Protective conductor
terminal M4

13

U2

U1

440

ø18
Setting
terminals
M3

50
154
240

*141 for 250A type only

* M16 for 500A type only

Connection of Setting Terminals·To prevent accidents, be sure to turn this instrument off before proceeding to the following operations.
·The connection should be performed by Shinko or other qualified service personnel.
Control input signal only
Current signal (4-20mA DC)

1-5VDC

4-20mADC

Controller

Contact input signal(High-limit/low-limit setting units are connected.)

Voltage signal (1-5V DC)

16

16

17

17
Controller

18

H
C
L

18

19

19

20

20

3
2
1

3
2
1

Low-limit setting unit
Variable resistor (10kΩ)2
20
1

High-limit setting unit
Variable resistor (10kΩ)* Setting units: low-limit value<high-limit value
Manual setting unit and with auto/man switching
Current signal (4-20mA DC)
4-20mADC

16
17

Controller

18

Manualsetting unit

2
AUTO

3

Manual setting unit only
Manual setting unit only

19

Manual setting unit
3

2

2

20

1

1

20

2

MAN

1

1

Variable resistor (10kΩ)Variable resistor (10kΩ)With slope setting unit (Slope using control input signal)
Current signal (4-20mA DC)

With slope setting unit (Slope using remote setting input)
Current signal (4-20mA DC)
4-20mADC

4-20mADC

16

16

17

17
Controlle
Slope setting unit

18

3

19

2

20

1

1

Controlle

18
19

Voltage output unit *1
0-2.5V corresponds
to 0-100%.

20
2
3
1

Variable resistor (10kΩ)(PLC, etc.)* Use the two short-circuit plates, which are provided for the connections between (16) and (17) (or (17) and (18)), and between (19) and (20), as required. Be sure to check theterminal numbers when connecting them.
*1: When voltage output units are used for the remote setting inputs (AI1 to AI3),
It is necessary to isolate each output from the voltage output units when plural PA-3000-H3 are connected. In addition, the output from 1 set of the voltage output unit
cannot be connected to plural PA-3000-H3 in parallel.

With elevation setting unit (Elevation using remote setting input )Manual setting unit, slope setting unit & Auto/Man SW

Current signal (4-20mA DC)
4-20mADC

Current signal (4-20mA DC)
4-20mADC

16

16
17

17
Controller

Controller
Slope setting unit

18
19

3

3

2

2

4

1

1

19

2

20

Elevation

18

AUTO

1

20

MAN

Variable resistor (10kΩ)Manual setting unit

1

12

Variable resistor (10kΩ)3

2

Variable resistor (10kΩ)Operation of multiple instruments
Current signal (4-20mA DC)

Voltage signal (1-5V DC)

4-20mADC

Controller

1-5VDC
16

16

16

16

16

16

17

17

17

17

17

17

18

18

18

18

18

18

19

19

19

19

19

19

20

20

20

20

20

20

Controller* Connectable quantity of the PA-3000-H3 series in case of plural-unit operation is limited by the output capacity of a controller.
(1) After completing connections, be sure to reattach the setting terminal cover.
(2) The internal circuitry may be destroyed if an over-current or over-voltage is applied to the control input signal terminal.
Be careful when applying a signal to this terminal.

Glossary
Control Systems• Phase angle control

The phase angle control system controls the output by varying the conducting angle θ (ON timing) within 210° (3-arm operation) or 150° (6-arm
operation) of the power frequency. Most thyristor regulators employ this system.
This control is continuous compared to the zero-cross control and can be used in the primary side control of the transformer.
• Zero-cross control

0.75 sec.

0.75 sec.

OutputThe zero-cross control system controls the output by defining ON/OFF for each power waveform cycle.
It generates less noise than the phase angle control. However, as the maximum current flows during the ON
period and it is intermittent, the flickering phenomena (Example: Lighting flicker) may be generated.
The zero-cross control can use only a Nichrome heater. Do not use it for the purposes other than the
primary side control of the transformer and Nichrome heater, otherwise, the over-current alarm will activate or
the rapid-break fuse will be melted down.
The pulse interval corresponds to the output updating interval. For example, when the pulse interval is 1.5 sec.
(default value) and the output is 50%, the ON/OFF waveform becomes as shown on the right.

Pulse interval• 6-arm and 3-arm types

The “6-arm” type performs ON/OFF control of both the 1-side (positive) and 2-side (negative) gates of 1-power phase at the thyristor gate control.
The “3-arm” type leaves the 2-side (negative) gate permanently ON. This instrument adopts the “6-arm”.
U V W
1 side (Positive)
2 side (Negative)

6-arm: ON/OFF
3-arm: ON/OFF[6-arm control waveform]

6-arm: ON/OFF
3-arms: Always ON

Voltage[3-arm control waveform]
Voltage

Load

Current

Current

Nichrome heater

ResistanceFeedback Type・Voltage feedback typeThis is a type to control with the feedback of the voltage of the load, and is optimum for a heater with a low resistance-temperature
characteristic as shown on the right (Nichrome heater, etc.).
Such a heater can be controlled stably by maintaining the output voltage from the thyristor regulator to a constant level.
This feedback can be used only with the phase angle control type.
Note) The voltage feedback type controls the average value of three-phase load voltage values. This type cannot control each phaseindividually.

Temp.

80

60

60

40

40

20

20
20

60

40

80

Control input (%)

Control output (%)

80

Slope setting (%)

100

80

Control output (%)

100

100

Silicon carbide (SiC) heater

Deterioration

Temp.

Settings• Slope0

Temp.

Resistance• Power feedback typeThis is a type to control with the feedback of the power of the load and is optimum for a heater, the resistance of which varies according to
the generated heat temperature and varies by nearly 4 times the initial resistance value across the ages (silicon carbide heater, etc.).
Such a heater can be controlled stably by detecting both the voltage and current applied to the load and by feeding back the power
multiplying them.
This feedback can be used only with the phase angle control type.
Note)  A CT is needed for using the power feedback type. Connect a CT matching the rated current.
 The power feedback type controls the power consumption of a load (whole power of three phases).
[ 3 x Average of three-phase load voltage values x Average of three-phase load voltage values]
This type cannot control each phase individually

Molybdenum disilicide heater

Resistance• Current feedback typeThis is a type to control with the feedback of the current of the load, and is optimum for a heater with a high resistance-temperature
characteristic as shown on the right (Molybdenum disilicide heater, etc.).
Such a heater can be controlled stably by setting the maximum output of the thyristor regulator to the maximum rated current of the heater
because this makes it possible to output the current in proportion to the control input signal regardless of changes in the resistance value.
This feedback can be used only with the phase angle control type.
Note)  A CT is needed for using the current feedback type. Connect a CT matching the rated current.
The current feedback type controls the average value of three-phase load current values. This type cannot control each phaseindividually

100

80%
60%
40%

60

The slope setting provides the output (actually the internal SV used for processing) with a slope(inclination). It is effective for example in a electric furnace with 3-zone control which 3 sets of the thyristor
regulator is operated by one set of controller.

The elevation setting provides the output (actually the internal SV used for processing) with a bias. For
example, even when the controller output becomes minimum, a constant base power can be applied toan electric furnace, etc.

20%
0%

40
20
0

20

40

60

Control input (%)

80

100

• Soft startThis function varies the output (actually the internal SV used for processing) gradually in order to prevent sudden change in the control output when this instrument is turned on
or when the control input changes drastically. For example, a rush current can be suppressed in case of the primary side control of transformer. With this instrument, thereaching time of the SV from 0% to 100% can be set arbitrarily from about 1 to 20 seconds.
In the models without feedback, the change of output (reaching time of the SV 0% to 100%) by the soft start becomes faster slightly since the actual change of output includes
the operation time of the feedback control, etc. added.
• Current limit
This function sets the maximum limit to the control current. For example, when the voltage feedback is used, the current flows according to the resistance of the load and therated current of the power controller may be exceeded if only the voltage control it used. The current limit function is used in such cases. The judgment value is the averagevalue of three-phase load current values. This function cannot control each phase individually
The following chart shows an example of current limit.
100

Control current (%)

80
70
60

Current Limit 70%(Note) A CT is needed for using the current limit.
Connect a CT matching the rated current.

40
20
0

20

40

60

80

100

Input (%)• Imbalance adjustment

For the 3-phase control, although it is desirable that the voltage and current values of the three phases are the same values (balanced status), they are
actually not the same values due to the reliability of the power supply and the imbalanced load (imbalanced status). When the imbalanced status isserious, the controllability is deteriorated as well as the overall reliability of the system.
The PA-3000-H3 Series incorporates the imbalance adjustment function adjusting the output value of each phase in certain range in case of theimbalanced status. This function solves the imbalanced status in a simulated manner and enables stable control. The imbalance adjustment isperformed based on either the voltage or current.

・This catalog is as of April 2021, and specifications are subject to change without notice.
・If you have any inquires, please consult us or our agency.

SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION
Head Office:2-5-1, Senbahigashi, Minoo, Osaka, 562-0035, JapanTel:+81-72-727-6100

Fax:+81-72-727-7006

URL:

https://shinko-technos.co.jp/e/E-mail:overseas@shinko-technos.co.jp

202104 E02