Zinc Oxide Surge Arrester

Zinc Oxide Surge Arrester

Zinc Oxide Surge Arrester Zinc oxide surge arrester MOA is tested for insulation resistance and leakage current on a regular basis. Once the MOA insulation resistance is found to be significantly reduced or broken down, it should be replaced immediately to ensure safe and healthy operation of......

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Zinc Oxide Surge Arrester


Zinc oxide surge arrester MOA is tested for insulation resistance and leakage current on a regular basis. Once the MOA insulation resistance is found to be significantly reduced or broken down, it should be replaced immediately to ensure safe and healthy operation of the transformer.


zinc oxide surge arrester Technical parameters:

Sys R.V

 

MOA R.V

 

MCOV

 


1/10μs Steep Current Impulse

8/20μs Lighting Current Impulse

 

30/60μs Switching Current Impulse

 

2msRectangular Current Impulse(2ms)

 

4/10μs High Current Impulse

 

KV(r.m.s)

≤KV

≤KV

AKA

0.22

0.28

0.24

0.6


1.3


75

25

0.38

0.5

0.42

1.2


2.6


75

25

3

3.8

2.0

7.5

17.3

15

12.8

75

40


5

4.0

8.0

17.3

15

12.8

100

65

6

7.6

4.0

15.0

34.5

30

25.5

75

40


10

8.0

15.0

34.5

30

25.5

100

65

10

12.7

6.6

25.0

57.5

50.0

38.5

75

40

10

12.7

6.6

25.0

57.5

50.0

38.5

75

40


17

13.6

25.0

57.5

50.0

38.5

100

65

3

5

4.0

7.5

15.5

13.5

11.5

150

65

6

10

8.0

15.0

31.0

27

23.0

150

65

10

17

13.6

24.0

51.5

45

38.3

150

65


About product:

Zinc oxide surge arrester MOA ground wire should be connected to the transformer housing.

The grounding wire of the MOA should be connected directly to the distribution transformer housing, and then the housing is connected to the ground. It is a mistake to connect the grounding wire of the arrester directly to the ground and then introduce another grounding wire from the grounding peg to the transformer casing. In addition, the grounding wire of the arrester should be shortened as much as possible to reduce the residual voltage.


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