Features
- Software based design
- Instantaneous/Definite time selection
- Wide auxiliary supply
- Low burden
Principle of Operation:
The sensing Voltage is applied to the input terminals of the relay. The applied voltage is amplified and fed to a Voltage Comparator. Output of the comparator is applied to the processor. The Software in the CPU performs the function of measurement and extends a trip signal after the set time delay is reached. The Relay contacts are self reset type and indications are latched, RESET button provided on the front of relay to clear these latched indications. TEST button is provided to test the relay contacts for trip and alarm circuits.
Application:
Over Voltage Relay is used for protection of motors, generators and capacitor banks, feeder etc.
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