Three Phase Thyristor Power Controller – POW-12-PA-CL
Three Phase Thyristor Power Controller – POW-12-PA-CL
Product Description :
POW-12-PA-CL – Three Phase SCR Power Regulator suitable for Three Phase Heaters connected in Star or Delta Configuration.
Thyristor-based Power Regulator has varied applications and is commended for smooth and steady-state control. It can be used with heating elements like Nichrome, Tungsten, Kanthal, Infra-Red, Ceramic, etc., where precise, accurate, and continuously variable temperature/power control is required. Compared to conventional contactor-based temperature/power control systems, there is a significant advantages of a Thyristor-based control system, such as consistent heating, enhanced heater life, power saving, accurate control and reduced maintenance cost. The POW-12 can be used for small laboratory ovens, furnaces, Air heaters, etc….
Libratherm offers a ready-to-use compact 3-phase power regulator for electrical heating loads ranging from 6 KW to 27KW @ 380/415/440VAC 3 phase supply. This power pack module comprises SCR- triggering card, a rightly rated back-to-back connected SCRs (with electrically isolated base)- mounted on the Aluminum heat sink. Suitable RC snubbers are provided to protect SCR devices.
Libratherm offers a ready-to-use control panel comprising PID or Ramp/Soak temperature controller, 3 phase Thyristor of required ratings and heavy-duty switch gears. Such control panels are used for AHU control, Furnace control, Hot Air dryers, Electrical Boilers, etc…
Key Features:
- Self-synchronized six-pulse SCR firing card
- Semikron – Germany brand 3 phase SCR device.
- 1 x AI, 1 x AO, 1 x DI, 2 x DO
- User selectable control signal (4-20)mA/(0-5)VDC/(0-10)VDC/Potentiometer(1 x AI)
- Auto-detection of phase sequence and auto-synchronization
- Built-in cooling fan for 21KW to 27KW models.
- Heatsinks are mounted with thermistors – protection against over-heating
- Facility to start/stop thyristor using external potential free contact (1 x DI)
- Front Panel LEDs indicate the status of over current, over temperature, phase reversal etc…
- Built-in Current Control and Overcurrent Trip facility to limit the desired current through heaters
- Retransmission of 4-20mA or 0-10V proportional to the load current (1 x AO)
- Trip Contact Relay and Healthy Relay Contacts (2 x DO)
- Gradual Soft increases and decreases of voltage across the load, unlike the ON-OFF type.
- Separate auxiliary supply of 230VAC, 50/60Hz
- SCR devices are protected by RC snubbers and surge suppressors
- Current control feature avoids needing an external Fuse in series with the load.
- Rugged metal enclosure & modular design – easy to install & easy to maintain.
- Libratherm Thyristor power regulators are time-tested & field-proven in all major industries.
- More than 2000 installations have taken place across India & abroad and the number is growing rapidly.
- CE Certified
Applications:
- Furnace/Oven control
- AHU and De-Humidifier
- Hot Air Generator
- Industrial Heating control
| Parameters | Description |
|---|---|
| Available Load Configurations | Three-phase (3 or 4 wire star and 3 or 6 wire delta – as shown above) |
| Control Action | Linear and Proportional using Phase angle control technique (self-synchronized). |
| Control Signal (AI) | (4-20) mA / (0-5) VDC / (0-10) VDC / Potentiometer (user selectable). |
| Retransmission (AO) | 4-20mA or 0-10V proportional to the heater load current (Optional) |
| Remote On/Off control (DI) | Using external potential-free relay contacts to enable or disable the Thyristor or voltage output to the load. |
| Relay O/Ps (DOx2) | Relay contacts (C-NO) provided when Thyristor power is ON and it is Enabled. Relay contact (C-NO) provided when overload condition occurs. |
| Front Panel LED Indications | For Power ON, Phase Sequence OK, Enable/Disable mode, Healthy Relay, Over Load, Over Heat and Current Limit mode |
| Voltage Output | 0 to 230VAC (for star-connected loads) or 0 to 415/440VAC (for delta-connected loads) variable voltage across the heater/transformer load, proportional to the input control signal. |
| Smooth Control | Adjustable Ramp Up and Ramp Down Time for the soft increase and decrease of output voltage. (Settable in the range of 2 to 20 seconds) |
| Load Type / Current | Suitable for Resistive/Inductive load (10A to 40A @ 110/230/415 VAC). |
| Settings | A current Limit potentiometer is accessible to the user in the front. |
| Current Control | Built-in current limit and overload trip features. Trip Reset switch is provided for easy access to the user. |
| Aux. Supply Voltage | 230VAC +/- 10%, 50/60 Hz. (110VAC +/-10%, 50/60 Hz. – optional) |
| Load Supply Voltage | 40 to 440VAC -3 phase from mains power or a step-down transformer. |
| Termination | Heavy-duty terminals for 2.5 to 6.0 sq. mm cable. |
| Dimensions / Weight | As given in the above table 1 / Approx. 3 Kg. |
| Mounting | POW-12 can be mounted on the base plate inside the control panel using 4 x M6 bolts. |
| Precautions | The user must ensure proper Air circulation inside the mounting panel using the external exhaust FANs and dust Filters. |
| CE Certification | Low Voltage Directives - 2014/35/EU and EMC Directives – 2014/30/EU |
| Model | Product Description | Size (H x W x D) mm. | Part No. |
|---|---|---|---|
| POW-12-PA-CL-10A | Three-phase thyristor power regulator - suitable for max. 6KW/10A @ 110 to 480 VAC with current control and overload protection. (Natural Air cooled) | 230 x 155 x 90 | 2501 |
| POW-12-PA-CL-15A | Three-phase thyristor power regulator - suitable for max. 12KW/15A @ 110 to 480 VAC with current control and overload protection. (Natural Air cooled) | 230 x 155 x 90 | 2502 |
| POW-12-PA-CL-20A | Three-phase thyristor power regulator - suitable for max. 15KW/20A @ 110 to 480 VAC with current control and overload protection. (Natural Air cooled) | 230 x 155 x 90 | 2503 |
| POW-12-PA-CL-25A | Three-phase thyristor power regulator - suitable for max. 18KW/25A @ 110 to 480 VAC with current control and overload protection. (Forced air cooled) | 230 x 155 x 140 | 2504 |
| POW-12-PA-CL-30A | Three-phase thyristor power regulator - suitable for max. 21KW/30A @ 110 to 480 VAC with current control and overload protection. (Forced air cooled) | 230 x 155 x 140 | 2505 |
| POW-12-PA-CL-35A | Three-phase thyristor power regulator - suitable for max. 24KW/35A @ 110 to 480 VAC with current control and overload protection. (Forced air cooled) | 230 x 155 x 140 | 2506 |
| POW-12-PA-CL-40A | Three-phase thyristor power regulator - suitable for max. 27KW/40A @ 110 to 480 VAC with current control and overload protection. (Forced air cooled) | 230 x 155 x 140 | 2507 |
Product Category
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