Zinkoxid Überspannungsableiter 21KV

Zinc Oxide Surge Arrester 21KV service condition: 1 Ambient temperature: -40 +40°C 2 Altitude: not more than 2000m; 3 Frequency of power: from48Hz to62Hz;; 4Earthquake intensity: not higher than 7 degrees; 5Max wind velocity:lower than 35m/s. 21KV 5KA Rated Voltage21kVRated frequency48 62HzContinuous operating voltage17kVNominal discharge current5KA1/4 Steep current impulse residual voltage66.5kV8/20 Lightning impulse residual voltage63 kV30/60 Switching impulse residual voltage53.9kVRectangular current withstand 2000μs100 AHigh current withstand 4/10μs65kA 21KV 10KA Rated Voltage21kVRated frequency48 62HzContinuous operating voltage17kVNominal discharge current10KA1/4 Steep current impulse residual voltage66.5kV8/20 Lightning impulse residual voltage63 kV30/60 Switching impulse residual voltage53.9kVRectangular current withstand 2000μs250AHigh current withstand 4/10μs100 kA