Details:
  The main technical parameters

- environmental conditions: temperature: -25~+60 °Cand humidity:30%~85%RH altitude: <= 2000m

- power condition: rated voltage: 220V~450V voltage error:± 5%: sine wave, harmonic voltage   distortion rate of not more than 5% working frequency:50HZ power consumption: < 0.2W/1kvar

- measurement error: voltage: <± 0.2% currents: <± 0.2% power: <= 0.2% power factor:± 1%:± 1 °Ctemperature

- protection error: voltage: < 0.5% currents: = 0.5%± 1 °Ctemperature: time:± 0.1s

- reliability parameters: control accuracy:100%switching allowed number:1000000capacitor

capacity running time decay rate: less than 1% / year capacity switching attenuation rate: <= 0.1% / million times.