- Built-in high-performance micro controller with high reliability and strong resistance to interference.
- Voltage value and fault message displayed through illuminated LCD.
- Protection against over-voltage, under-voltage, phase failure, unbalance and phase sequence is available.
- Protection parameters are set through keys, and the protection function can be turned on and off freely.
- True RMS value measurement, voltage measurement accuracy ≤ 1%.
- Working frequency 45Hz~65Hz.
- Three-phase voltage value query through keys.
- Testing and manual reset can be conducted through keys.
- Three-phase four-wire system features Neutral-Phase failure protective function.
The protective relay can be inserted directly into a standard TH rail.
Relay Wiring Diagrams