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  • Electronic Relays_Motor protection_Front panel indicators

Front Panel Indicators


Failure indications:
When there is a failure, the relay trips and
the yellow “OK” LED goes out and the
correspondant red LED failure indication shows.

Tripping caused by:

Thermal overload, start-up current
- Steady red light on the middle LED
- Always automatically reset
- The “tripped” indication cancels when the motor is restarted

Phase unbalance
- Irregular red flash of the middle LED
- Automatic or manual reset
- The “tripped” indication cancels when the motor is restarted

Under current
- Steady red flash of the middle LED
- Automatic or manual reset
- The “tripped” indication cancels when the motor is restarted		When the relay is reset (manually or automatically), the “OK” LED lights again. Failure indications go out, when the motor is restarted.

Indicates when relay permits starting (steady yellow light).
Earth fault
- Steady red light on the lower LED
- Automatic or manual reset
- The earth fault indication cancels when the motor is restarted or if the fault disappears.

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