AUTOMATIC VOLTAGE CONTROLLER

JINDAL'S Automatic Voltage Controllers provide foolproof protection against High / Low / Unbalanced Voltage. Jindal's AVC resolves 99% of voltage problems automatically and ensures a steady voltage supply round the clock. They are known for their rugged built and maintenance-free performance.
Jindal's AVC's are trusted in more than 35 countries across 5 continents.Voltage fluctuation is a common phenomenon in every part of the country. The industrial units running round the clock, usually face the problem of low and high voltage. 90% of industrial load motors . Electric motors draw considerably high current at low & high voltage. This higher current affects the electrical motors ( particularly smaller capacity motors upto 7.5 H.P.) in three ways:
Higher current produces higher losses in electrical motors which causes premature failure winding.
These higher losses of electric motors also increase the losses of cables, switches, transformers and other associated equipments.
For smooth continuous operation of motors, overload relays are usually set at 20% higher setting.
Adverse Effects of Single Phasing
The line current increases by 1.5 times.
If the relay setting is at 15-20% higher than actual operating current then the relay will take 4-6 minutes to trip.
The motor ( particularly smaller capacity motors upto 7.5 H.P) cannot withstand this high current for such a long time and in most of the cases it burns out before the relay trips.
Heavy short circuit current flows through the relays, contactors, cable etc.
Under this condition when the relay, contactor trips, they produce sparks and some times burst.
This further damages the switch gear and in some of the cases may cause fire also.
With the installation of the stabilizer and maintaining 390/400 volts, the motor will operate smoothly drawing 15-20% lesser current and correspondingly the relay setting can be reduced by 15-20% In case single phasing occurs, the relay will trip in 40-50 seconds. The motor can withst