Metal Oxide Surge Arrester

Metal Oxide Surge Arrester

Metal Oxide Surge Arrester We have a strictly quality control process from the raw material to finished about metal oxide surge arrester. Advanced testing lab to make sure products quality and improve our creative ability. Quality and Safety is the soul of our products. Place of Origin:Zhejiang,......

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Metal Oxide Surge Arrester


We have a strictly quality control process from the raw material to finished about metal oxide surge arrester. Advanced testing lab to make sure products quality and improve our creative ability. Quality and Safety is the soul of our products. 


Place of Origin:Zhejiang, China (Mainland)

Certification:Iso9001-2008

Voltage:35kV and lower

Type:Customizable

Color:Red | Grey

Material:Silicone rubber

Standard:IEC Standard


metal oxide surge arrester Specification Table

Surge arrester rated voltage

Surge arrester system voltage

Nominal discharge current 10kA level

System nominal voltage

Steep wave impulse current residual voltage

Lighting impulse current residual voltage


Operation impulse current residual voltage1mA DC reference voltage

Virtual value


(peak)≥



Virtual value

17

13.6

57.5

50

42.5

25

10

24

19.2

82.8

72

61.2

42

20

36

28.8

124.2

108

91.8

47

42

33.6

138

120

98

65

27.5

51

40.8

154

134

114

73

35

 

54

43.2

163

142

121

77


Application:

The transformer low voltage side should also be installed. If the MOA is not installed on the low-voltage side of the transformer, when the high-voltage side arrester discharges the lightning current to the earth, a voltage drop is generated on the grounding device, and the voltage drop acts on the neutral point of the low-voltage side winding through the distribution transformer. Therefore, the lightning current flowing in the low-voltage side winding will cause the high-voltage side winding to induce a high potential (up to 1000 kV) according to the ratio, which will be superimposed with the lightning voltage of the high-voltage side winding, resulting in the neutral point potential of the high-voltage side winding. Raise, break through the insulation near the neutral point. If the low-voltage side is equipped with MOA, when the high-voltage side MOA discharges the potential of the grounding device to a certain value, the low-voltage side MOA starts to discharge, so that the potential difference between the low-voltage side winding outlet end and the neutral point and the outer casing is reduced, thus Can eliminate or reduce the impact of the "inverse transformation" potential.


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insulator & fuse cutout & lightning arrester & service cutout Workshop

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