Three Phase Heater Power Controller

Three Phase Heater Power Controller Suitable for 1.5KW to 12.0 KW 3 phase resistive heater load Can be used for both continuous or analog proportional and Time proportional action.
> Suitable for 3 or 4 wire star configuration / 3 or 6 wire delta configuration.
> Auto / Manual operation.
> Accepts (4-20)mA / (0-5)VDC / (0-10)VDC control input or external relay contact
> Soft start for smooth control.
> Adjustable voltage limit per phase.
> Isolated heat sink for safety.
> Simple and Modular design for easy servicing of cards and thyristors.

Description of Thyristor Power Controller:

Libratherm offers ready to use compact 3 phase SCR power controller for electrical heating loads ranging from 1.5 KW to 12 KW/3-phase. This power pack module comprises of SCR triggering card model LTC-15, rightly rated back to back connected SCRs (with electrically isolated base)- mounted on the heat sink. SCR devices are protected by glass fuses, thermal cutouts (Thermistors) and RC-snubbers. Heavy duty Terminal connectors are provided for AC 3 phase supply, control signal and heater wires. The entire assembly is mounted on MS powder coated plate/enclosure, which in turn can be easily fixed inside the closed control panel as desired. Potentiometric settings are accessible to the user for on-site calibrations, max/min voltage output and ramp up / ramp down time adjustments. This model accepts the control signal from external DDC, PID or PLC controller in the form of (0-5)V, (0-10)V or (4-20