1. Fluctuation of voltage ±10%, frequency difference less than 2Hz, meter starts to work.
2. Frequency difference close range: 0.05-0.5Hz;
3. Working voltage: Power system & generator: 100.50Hz;
4. Power consumption: Less than 3VA;
5. Contact output capacity: AC380V.5A or DC280V.10A;
6. Environment: Temperature: 0-55℃;
Relative humidity: 95%