Three-phase combined type over-voltage protector


The over-voltage protector is a new type protector. They are mainly used in the power plant, supply networks subscriber for protecting transformer station, switch, bus bar, motor, etc. The protector can effectively arrest atmospheric over-voltage, vacuum switch over-voltage and operating, interphone over-voltage and phase-ground over-voltage.

The technical Characteristics of Three-phase combined type over-vlotage protector

Type

System nominal voltage

Arrestor Rated Voltage

Arrestor Continuous operating voltage

Mode of connections

Arrestor Continuous operationg voltage

Residual voltage at nominal discharge current(peak)

Residual voltage at operating sugecurrent

2MSsquare current fux

Remark

YH5WS-5/15 ¡Á 5/15

3

5

4.0

phase £­ phase

phase £­ earth

8.0

7.5

15.0

15.0

12.8

12.8

200

Distributing Type

YH5WS-10/30 ¡Á 10/30

6

10

8.0

16.0

15.0

30

30

23.0

23.0

20

YH5WS-17/50 ¡Á 17/50

10

17

13.6

26.6

25.0

56.0

50

38.0

38.0

200

YH5WZ-5/1.5 ¡Á 5/13.5

3

5

4.0

8.0

7.2

13.5

13.5

11.5

11.5

400

Power Station Type

YH5WZ-10/27 ¡Á 10/27

6

10

8.0

15.0

14.4

27.0

27.0

22.0

22.0

400

YH5WZ-17/4 ¡Á 7/45

10

17

13.6

25.0

24.0

45.0

45.0

36.0

36.0

400

YH5WZ-51/150 ¡Á 51/134

35

51

40.8

88.0

73.0

150.0

134.0

122.0

105.0

400

YH5WR-5/13.5 ¡Á 5/13.5

3

5

4.0

8.0

7.2

13.5

13.5

10.5

10.5

400

For paralleling compensate capacitor

YH5WR-10/27 ¡Á 10/27

6

10

8.0

15.0

14.4

27.0

27.0

21.0

21.0

400

YH5WR-17/46 ¡Á 17/46

10

17

13.6

25.0

24.0

46.0

46.0

35.0

35.0

400

YH5WR-51/150 ¡Á 51/134

35

51

40.8

88.0

73.0

150.0

134.0

122.0

105.0

400

YH2.5WD-4/11.6 ¡Á 4/9.5*

3.15

4

3.15

7.5

5.7

11.5

9.5

9.8

7.6

400

For motor

YH2.5WD-8/23 ¡Á 8/18.7*

6.3

8

6.3

15.0

11.2

23.0

18.7

19.5

15.0

400

YH2.5WD-13.5/38 ¡Á 13.5/31*

10.5

13.5

10.5

25.0

18.6

38.0

31.0

32.5

25.0

400

YH5WD-4/11.5 ¡Á 4/9.5*

3.15

4

3.15

7.5

5.7

11.5

9.5

10.0

7.6

400

For power generater

YH5WD-8/23 ¡Á 8/18.7*

6.3

8

6.3

15.0

11.2

23.0

18.7

20.0

15.0

400

YH5WD-13.5/38 ¡Á 13.5/31*

10.5

13.5

10.5

25.0

18.6

38.0

31.0

33.0

25.0

400

Note: * means rated voltage of motor

 

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