Three Phase Servo Controlled Voltage Stabilizer, 300-470v

The Three Phase Servo Controlled Voltage Stabilizer, 300-470v serves industrial sites that need steady voltage. It accepts any line voltage from 300 V to 470 V and locks the output at 400 V. A microcontroller board reads the line every instant plus drives a motorised variac - the voltage changes by more than 20 V each second if required. Oil circulates through the tank and carries heat away - the unit runs at full load without pause. A metal oxide varistor blocks surges - a thermal relay opens the circuit on overload. Indian manufacture gives 98 % efficiency but also keeps plant motors, lifts and presses running without breaks. The cabinet stands on the floor - front panels open for quick service.