Technical parameters of Zinc Oxide Varistor For HV Arresters

Model No.

Diameter  

Height mm

Voltage at 1mA D.C.

Ratio of residual Voltage at 8/20us lightning impulse and 1mA DC

4/10 μs 2 times high current      

18times of 2μs rectangular current impulse

Usage

mm

mm

KV

5kA

10kA

kA(max.)

kA(max.)

D3

35^+0-1

24^±1

5.0^±0.5

1.85

40

100

Distribution Power Station

D4

42^±1

24^±1

5.0^±0.5

1.8

65

200

Power Station Electric machinery Parallel complementary capacitor

D5

52^±1

24^±0.5

4.7^±0.5

1.72

1.79

65

400

Power Station Electric machinery

D6

59^±1

22.5^±0.5

4.5^±0.5

1.66

1.77

100

600

Power Station

D7

71^+1-0

22.5^±0.5

4.5^±0.5

1.58

1.70

100

800

D8

81^+1-0

22.5^±0.5

4.5^±0.5

1.60

1.65

100

1000