SCR Power Control Modules / 3 Phase Proportional Relay

SCR Power Control Modules / 3 Phase Proportional Relay

  • Allows to set the voltage applied to different sort of loads like Resistive, Inductive.
  • Small Housing. Easy and ready to use.
  • 6 SCR Phase angle control for star and delta 3 SCR 3 Diode.
  • Shorted SCR detection.
  • Optically coupled gate drives.
  • Fully opto-isolated full cycle three phase angle controller.
  • Plug in and interchangeable controller card
  • Linear control of RMS voltage with respect to command signal 0-10 VDC or 0-5VDC or 4-20mA
  • Input Output transfer characteristic linearization function (Resistive load).
  • Over temperature protection.
  • Diagnostic features like status given on LED
  • Built –in Power Supply (90 – 270 VAC) , 50/60Hz
  • Power Switch and controller in a single casing
  • Rated operational Load current 50 – 90 A at 25 °C
  • Integrated heatsink and fan for force cooling for higher ratings.


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NOTE: 2-Phase & 1-Phase models available. Higher ratings will be available on request

TYPE S3-480-D-… -16-6/3

Mains voltage Mains frequency Current Control input
Up to 480 VAC 50 / 60 Hz 25A /50A /75 / 90A  0-5 VDC/ 0-10VDC / 4-20mA

Description
This model is 3Ø phase angle power controller with 6 SCR for Star and 3 SCR, 3 diode for Delta phase angle control. It linearly controls RMS load voltage with respect to control signal. This model is available with current rating from 50 to 90 amps. It is useful for transformer coupled loads, fast responding loads and non linear loads.


Applications

  • Vacuum furnaces
  • Transformer coupled loads
  • Fast responding loads
  • T-3 lamps
  • High frequency induction heating
  • Variable resistance loads
    • Silicon carbide
    • Molybdenum di silicide
    • Graphite

Load current 50- 90 Amps/ Phase @ 25°C (25/50/75/90 Amps)
Min. Operational Current 50- 90 Amps/ Phase @ 25°C (25/50/75/90 Amps)
Load Voltage range 0 to 100% VAC/ 25 – 480 VAC
Off state leakage current Voltage Frequency Less than 10mA
dv/ dt critical 1000 V/ μS
I2T Refer Output specifications table
SCR voltage (Peak forward and reverse rating ) 1600 Volts minimum

Input Specifications

Control signal AA: 4 to 20mA
CC: 0 to 5 VDC
BB: 0 to 10 VDC
DD: Potentiometer controlled
Allowable Input Current Less than or equal to 50mA
Impedance (Rc) Dynamic 100MΩ
Control Range 0 to 100% of line voltage

Output Specifications

Current Voltage Range V  PIV 480 V PIV 600 V Max. Peak (1 cycle current) Leakage Current mA I2T For fusing t = 10m secs
50 A 25 – 600 V 1200 V 1600 V 1000 A 15 mA 4750 A2 S
75 A 25 – 600 V 1200 V 1600 V 1350 A 15 mA 14450 A2 S
90 A 25 – 600 V 1200 V 1600 V 2000 A 15 mA 19100 A2 S

General Specifications

Frequency 50/60 Hz
Rated Insulation Voltage I/P to O/P ≤ 4000 VAC rms
Rated Insulation Voltage O/P to Case ≥ 2500 VAC rms
Insulation resistance O/P to case ≥ 10 10 Ω
Insulation Capacitance O/P to case ≥ 50 pF
Isolation Capacitance I/P to O/P ≤ 8 pF
Cooling Convection cooling on 50 A model and forced cooling on other models
Over temp protection O/P is interrupted when not cooled adequately
Heat dissipation 1.5 W/A of controlled current per phase
Fuses Semiconductor fuses are recommended. Fast acting electronic fuses protect control transformer.
Operating temperature 0 to 55°C
Storage temperature -40 to 80°C
Junction Temperature 100 °C
Protection against fast voltage transients Built-in RC network


THREE PHASE DIGITAL SCR POWER CONTROLLER / BURST Controller

  • Allows to set the voltage applied to different sort of loads like Resistive, Inductive.
  • Small Housing. Easy and ready to use.
  • 6 SCR Phase angle control for star and delta 3 SCR 3 Diode.
  • Shorted SCR detection.
  • Optically coupled gate drives.
  • Fully opto-isolated full cycle three phase angle controller.
  • Plug in and interchangeable controller card
  • Linear control of RMS voltage with respect to command signal 0-10 VDC or 0-5VDC or 4-20mA
  • Input Output transfer characteristic linearization function (Resistive load).
  • Over temperature protection.
  • Diagnostic features like status given on LED
  • Built –in Power Supply (90 – 270 VAC) , 50/60Hz
  • Power Switch and controller in a single casing
  • Rated operational Load current 50 – 425 A at 25 °C
  • Integrated heatsink and fan for force cooling for higher ratings.
  • Semiconductor fuses for thyristor protection.


Send Enquiry
Download PDF

NOTE: 2-Phase & 1-Phase models available. Higher ratings will be available on request

TYPE S3-480-D-… -16-6/3

Mains voltage Mains frequency Current Control input
Up to 480 VAC 50 / 60 Hz 50A/75/ 90/ 125/ 150/ 175/ 205/ 250/ 300/ 380/ 425A 0-5 VDC/ 0-10VDC / 4-20mA

Description
This model is 3Ø phase angle power controller with 6 SCR for Star and 3 SCR, 3 diode for Delta phase angle control. It linearly controls RMS load voltage with respect to control signal. This model is available with current rating from 50 to 425 amps. It is useful for transformer coupled loads, fast responding loads and non linear loads


Applications

  • Vacuum furnaces
  • Transformer coupled loads
  • Fast responding loads
  • T-3 lamps
  • High frequency induction heating
  • Variable resistance loads
    • Silicon carbide
    • Molybdenum di silicide
    • Graphite

Input Specifications

Control signal AA: 4 to 20mA
CC: 0 to 5 VDC
BB: 0 to 10 VDC
DD: Potentiometer controlled
Allowable Input Current Less than or equal to 50mA
Impedance (Rc) Dynamic 100MΩ
Control Range 0 to 100% of line voltage

Output Specifications

Current Voltage Range V  PIV 480 V PIV 600 V Max. Peak (1 cycle current) Leakage Current mA I2T For fusing t = 10m secs
50 A 25 – 600 V 1200 V 1600 V 1000 A 15 mA 4750 A2 S
75 A 25 – 600 V 1200 V 1600 V 1350 A 15 mA 14450 A2 S
90 A 25 – 600 V 1200 V 1600 V 2000 A 15 mA 19100 A2 S
110 A 25 – 600 V - 1600 V 2000 A 15 mA 89500 A2 S
125 A 25 – 600 V - 1600 V 2000 A 15 mA 89500 A2 S
150 A 25 – 600 V - 1600 V 5250 A 15 mA 128000 A2 S
162 A 25 – 600 V - 1600 V 5250 A 15 mA 128000 A2 S
200 A 25 – 600 V - 1600 V 5250 A 15 mA 128000 A2 S
250 A 25 – 600 V - 1600 V 5250 A 15 mA 128000 A2 S
300 A 25 – 600 V - 1600 V 7800 A 15 mA 300000 A2 S
400 A 25 – 600 V - 1600 V 8000 A 15 mA 306000 A2 S
500 A 25 – 600 V - 1600 V 17800 A 15 mA 1027000 A2 S
700 A 25 – 600 V - 1600 V 18200 A 15 mA 1027000 A2 S
Load current 50- 425 Amps/ Phase @ 25°C (50/125/150/175/ 200/250/300/380/425 Amps)
Min. Operational Current Less than equal to 50mA
Load Voltage range 0 to 100% VAC/ 25 – 480 VAC
Off state leakage current Voltage Frequency Less than 10mA
dv/ dt critical 1000 V/ μS
I2T Refer Output specifications table
SCR voltage (Peak forward and reverse rating ) 1600 Volts minimum

General Specifications

Frequency 50/60 Hz
Rated Insulation Voltage I/P to O/P ≤ 4000 VAC rms
Rated Insulation Voltage O/P to Case ≥ 2500 VAC rms
Insulation resistance O/P to case ≥ 10 10 Ω
Insulation Capacitance O/P to case ≥ 50 pF
Isolation Capacitance I/P to O/P ≤ 8 pF
Cooling Convection cooling on 50 A model and forced cooling on other models
Over temp protection O/P is interrupted when not cooled adequately
Heat dissipation 1.5 W/A of controlled current per phase
Fuses Semiconductor fuses are recommended. Fast acting electronic fuses protect control transformer.
Operating temperature 0 to 55°C
Storage temperature -40 to 80°C
Junction Temperature 100 °C
Protection against fast voltage transients Built-in RC network