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When the measured voltages moves outside the set point limit for longer than the time delay, the relay will operate, giving an alarm control or tripping signal, making this a fantastic product for electrical protection. The Protector can be used for under and over voltage detection, start standby generators, operation of mains failure units and switching standby suppliers. An illuminated red LED indicates a fault condition. The three-phase three-wire model protects each phase independently.
Basic Parameters
- Available with three voltage ranges 100-120V, 173-240V & 380-480V (Un)
- Trip level adjustment between 75-100% (Un) Under
- Trip level adjustment between 100-125% (Un) Over
- Non-phase sequence sensitive
- Adjustable differential (hysteresis) 1-15%
- Adjustable time delay 0.5-10s (t)
- Power ON LED (green)
- Optional auxiliary voltage
Click the PDF below to read more about the Crompton Instruments Three Phase Three Wire AC Voltage PV* Protector Trip Relay.