Three-phase overvoltage and undervoltage protector
Three-phase
Overvoltage and undervoltage protectors are commonly used power protection devices used to protect power equipment from damage due to excessive or low voltage. Adjusting the parameters of the overvoltage and undervoltage protector can make it better adapt to the actual working environment and needs, and improve the safety and reliability of power equipment.
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Product Parameter (Specification)
| Code | Technical Parameter | Minimum Protection Value | Maxmum Protection Value | Default Protection Value | Function Description |
| P1 | Power-on delay time | 1s | 500s | 10s | After external power cut,the time needed for power-on when power recovery. |
| U1 | Over-voltage protection value | 230V | 300V | 270V | When the voltage is higher than the set value, the protector will cut off the line. |
| U2 | Over-voltage recovery value | 225V | 295V | 265V | When the voltage is lower than the set value, the protector will automatically reset. |
| U3 | Over-voltage recovery delay time | 1s | 500s | 30s | After voltage recovery,the time needed for automatic reset. |
| U4 | Over-voltage protection action time | 0.1s | 30s | 1.0s | When the voltage is higher than the set value,the time needed for protection action. |
| U5 | Under-voltage protection value | 140V | 210V | 170V | When the voltage is lower the set value, the protector will cut off the line. |
| U6 | Under-voltage recovery value | 145V | 215V | 175V | When the voltage is higher than the set value, the protector will automatically reset. |
| U7 | Under-voltage recovery delay time | 1s | 500s | 30s | After voltage recovery,the time needed for automatic reset. |
| U8 | Under-voltage protection action time | 0.1s | 30s | 1.0s | When the voltage is lower than the set value,the time needed for protection action. |
| U9 | Three phase voltage error value | -9.50% | 9.50% | 0 | Correct the three phase voltage error. |
| U10 | Three phase voltage unbalance protection value | 20V | 99V | 20V | When three phase voltage unbalance value is higher than the set value, the protector will cut off the line. |
| U11 | Three phase voltage unbalance recovery value | 5V | 94V | 20V | When three phase voltage unbalance value is lower than the set value, the protector will automatically reset. |
| C1 | Over-current protection value | 1A | 63A | 30A | When the current is higher than the set value, the protector will cut off the line. |
| C2 | Over-current recovery delay time | 1s | 500s | 30s | After current recovery,the time needed for automatic reset. |
| C3 | Over-current protection action time | 0.1s | 30s | 1.0s | When the current is higher than the set value,the time needed for protection action. |
| C4 | Three phase current error value | -9.50% | 9.50% | 0 | Correct the three phase current error. |
| C5 | Times of continuous over current protection | 0 | 20 | OFF | When The times of continuous over-current protection exceeds the set value,the protector will cut off the line,then it needs to be opened manually. |
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