K B Enterprises

Earth fault Relay ~High accuracy (microprocessor based) ~Test button for testing for functional verification ~Transparent face cover (flush mount) ~Fault and trip Led indication ~High set fault and trip LED indication ~Wide range of current settings ~Alarm facility ~Flush/Din-rail mount ~Remote reset (optional) DESCRIPTION In the case of a grounded neutral system the vector sum of the current flowing in the three different phases will flow through the neutral conductor. Under healthy condition the resultant current flowing through the secondary grounded neutral current transformer will be zero. In such a three phase system if one of the three phases gets grounded or earthed then unbalancing of current occurs, the vector sum of all the three phases will have certain value. If this value exceeds the set value indicated on the relay, then the relay actuates and trips the main circuit.

Being the market leader in this domain, we are affianced in offering a wide range of precision designed Phase Failure Relay. It is also called Single Phasing Preventor or Phase Sequence Relay.

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 the motor connections are reversed in phase.
• When supply voltage is unbalanced

Features:

• The relay is designed for use in any motors independent of the H.P of the motor
• The LED will switch OFF in case of fault
• If required Time Delay (ON or OFF or both) can be provided