Two Phase Thyristor Power Controller – POW-2-PA
₹6,300 – ₹10,500
Prices are inclusive of Delivery Charges.
POW-2-PA-20A – Two Phase SCR Power Regulator for Two Phase Heater.
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Libratherm offers Two phase heater power regulator model POW-2-PA-XX for power control of resistive or inductive heating loads operating on 380 to 440VAC. This regulator accepts the user selectable DC control signal of 0-5V, 0-10V and 4-20mA and hence can be easily interfaced with DDC, PID, or PLC. For manual control, external potentiometer can also be used. The output voltage can be gradually varied proportional to the input signal. The built in back to back connected SCR can control two phase load of 20A to 40A. The phase angle firing control technique ensures smooth and gradual step-less control across the load.
Facility is also provided to adjust the soft increase or decrease in voltage across the heater load using on card Ramp UP and Ramp Down settings. The maximum and minimum output voltage across heater load can also be adjusted. Current Limit and Overload trip settings are provided in POW-2-PA-CL versions. The Trip RESET pushbutton is accessible to the user.
This model is available in a rugged powder coated metallic enclosure and can be easily fitted inside the panel.
Key Features:
- Solid-state, field-proven, rugged and reliable design.
- User selectable control signal 4-20mA/0-5V/0-10V.
- Gradual, smooth and step-less control of power across the heater.
- Current Limit and Overload current trip facility.
- Suitable for Resistive and Inductive loads.
Technical Specification
| Parameters | Description |
|---|---|
| Item | Two Phase SCR based heater power regulator. |
| Model | POW-2-PA-20A and POW-2-PA-40A. |
| Control Signal Input (Linear) | 0-5V, 0-10V, 4-20mA (DIP switch selectable) or using external 10K potentiometer. |
| Control Technique | Phase angle control (Self Synchronized). |
| Supply Voltage | 415/440VAC +/- 10% @ 50/60Hz (Anyone to be specified). |
| Output Voltage (Two phase Load) | 0 to 415/440VAC across the load and proportional to the control signal. |
| Max. Load Current | 20A, 40A @ 415/440VAC (As per the model specified in the above table) |
| Ramp Up/Down & Max/Min Power | Adjustable using on-card single turn presets. |
| Current Limit/Trip Settings | Adjustable using on-card single turn presets. The current Limit setting can also be provided using an external potentiometer. (Available only with POW-2-PA-CL-XX models) |
| Enable/Disable Input | External potential-free contact for ON/OFF operation. |
| Mounting | Base plate mounting using 4 screws. |
| Connections | Separate terminals for Auxiliary Supply, Heaters and Control Signals. |
| Sizes (H x W x D) mm. | POW-2-PA-20A: 190 x 120 x 100 POW-2-PA-CL-20A:190 x 120 x 100 POW-2-PA-40A: 190 x 130 x 110 POW-2-PA-CL-40A: 190 x 130 x 110 |
Ordering Information
| Sr. No. | Model | Product Description | Part. No. |
|---|---|---|---|
| 1 | POW-2-PA-20A | Two-Phase SCR-based Heater power regulator for max. 8 KW/20A @ 415 / 440VAC load. | 2401 |
| 2 | POW-2-PA-CL-20A | Two-Phase SCR-based Heater power regulator with Current Limit and Overload Trip facility for max. 8 KW/20A @ 415 / 440VAC load. | 2402 |
| 3 | POW-2-PA-40A | Two-Phase SCR-based Heater power regulator for max. 16 KW/40A @ 415 / 440VAC load. | 2403 |
| 4 | POW-2-PA-CL-40A | Two-Phase SCR-based Heater power regulator with Current Limit and Overload Trip facility for max. 16 KW/40A @ 415 / 440VAC load. | 2404 |
