Pfv Phase Failure Relay

These PFV Phase Failure Relay, popularly called Single phasing preventer. It operates almost instantaneously and protects the motor under any of the following conditions:

* When there is disconnection of any one of the lines to the motor.
* When supply voltage is unbalanced

Construction :
The electronic circuit is of the most modern design and high grade components are used to ensure efficient performance.

* It is designed to be used for motors of any HP.
* LED is provided on the relay which will be off in case of Single Phasing or Phase reversal of input terminals of the motor
* It is normally supplied in a moulded dustproof enclosure
* Relay can be supplied with ON or OFF or both ON and OFF time delay
Tests :
- When there is disconnection of any one of the lines to the motor.
- When the motor connections are reversed in phase.
- When supply voltage is unbalanced.