Product overview

● The rear plug-in arrester is connected to the front plug or another rear plug to provide overvoltage protection for electrical equipment.

● The types of lightning arresters used in the transformer neutral point ungrounded system (18/20kV) are: ZRYH5WZ-32/85 (power station type) and ZRYH5WX-34/90 (line type).

● The types of lightning arresters used in the transformer neutral grounding system (12/20kV) are: YH5WZ-26/66 (power station type) and YH5WZ32/85 (line type).

Electrical Performance

Project

Unit

YH5WZ-26/66 parameters

YH5WZ-32/85 parameters

YH5WX-34/90 parameters

HY5WZ-34/85 parameters

Nominal system voltage

kV

20

20

20

20

Rated voltage of lightning arrester

kV

26

32

34

34

Continuous operating voltage

kV

20.8

25.6

27.2

27.2

DC 1mA reference voltage

≥Kv

37

47

50

48

Steep wave shock residual pressure

KV

76

95

104

95

Lightning impulse residual voltage

KV

66

85

90

85

Operating impact residual pressure

KV

56

75

80

75

Square wave shock tolerance

A

150

150

150

200

Large current impact tolerance

kA

65

65

65

65