Center Solid Seal Vacuum Load Switch-fuse Combination VZF(R)-12

Center Solid Seal Vacuum Load Switch-fuse Combination VZF(R)-12

1.The VZF(R)-12 series vacuum switch adopts the removable installation method
2. In particular, in the middle-mounted switchgear, the conventional fuser (or fixed load switch) is used to protect the station transformer (or grounding) more reliably.
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Product Details

The VZF(R)-12 series vacuum switch adopts the removable installation method, which changes the history that the load switch can not be used with the central circuit breaker, and changes the history of the secondary power distribution system without the central ring network cabinet. In particular, in the middle-mounted switchgear, the conventional fuser (or fixed load switch) is used to protect the station transformer (or grounding) more reliably.


Service conditions of vacuum switch VZF(R)-12  

a.The ambient temperature shall not be above +40℃ or below -25℃ The altitude shall not exceed 1500 meters.

b.Relative humidity: The daily mean should not exceed 95% and the monthly mean should not be greater than 90%. 

c.The mean of saturated vapor pressure should not be greater than 2.2×10-3Mpa. The monthly mean should not be greater than 1.8×10-3Mpa.

d.The seismic intensity shall not exceed 8 on the Richter scale.

e.The place shall be free of fire hazards, explosion hazards, heavy pollution, chemical corrosion and strenuous vibration.


Technical parameters of vacuum switch VZF(R)-12  


Item

Unit

Value

VZF-12/t630-20

Vacuum load break switch

VZF-12/T160-50

Vacuum load switch-fuse combination

1

Rated voltage

kV

12

12

2

Power frequency withstand voltage

Pole to pole/pole to earth

kV

42

42

3

Lightning impulse withstand voltage

Pole to pole/pole to earth

kV

75

75

4

Rated current

A

630

160(fuse)

5

Rated short-circuit breaking current

kA

/

50(fuse)

6

Rated short-time withstand current

kA

20

/

7

Rated peak withstand current

kA

50

/

8

Rated short-circuit opening current

kA

50

/

9

Rated cable charging breaking current

A

16

/

10

Alternating current

A

/

3150

11

Breaking the no-load transformer

kvA

1600

12

Mechanical life

times

10000

13

Partial discharge

PC

≤5


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