LCD Display Electronic Motor Voltage protection Relay with multi protective function
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Seller Promise:
Our Electronic motor Voltage protective Relay Product Feature
1,Built-in high-performance micro controller with high reliability and
strong resistance to interference.
2,Voltage value and fault message displayed through LCD.
3,Protection against over-voltage, under-voltage, phase failure,
unbalance and phase sequence is available.
4, Protection parameters are set through keys, and the protection
function can be turned on and off freely.
5,True RMS value measurement, voltage measurement accuracy
≤1%.
6,Measurement frequency 45Hz~65Hz.
7, Three-phase voltage value query through keys.
8, Testing and manual reset can be conducted through keys.
9, Three-phase four-wire system features N-phase failure protective
| Parameters | Setting range | Step | Factory default | Remarks |
| Over-voltage operation value | 0FF-381V~500V | 1V | 437V | M415 |
| 0FF-221V~300V | 1V | 253V | M240 | |
| Over-voltage delay time | 0.1~20s | 0.1s | 2s | |
| Under-voltage operation value | 260V~379V off | 1V | 323V | M415 |
| 150V~219V off | 1V | 187V | M240 | |
| Under-voltage delay time | 0.1~20s | 0.1s | 2S | |
| Unbalance Ratio | OFF-5%~20% | 1% | 8% | |
| Unbalance Delay time | 0.1~20s | 0.1s | 2S | |
| Phase sequence protection | ON-OFF | ON | ||
| Start-reset delay time | 0.3-30S | 0.1S | 0.3S | |
| Automatic | ON-OFF | ON | ||
| Note: “ON” means activating protection function, and “OFF” means inactivating protection function. | ||||
