ZW7-40.5 VCB/ Vacuum circuit breaker

ZW7-40.5 VCB/ Vacuum circuit breaker

1.Three-phase, AC 50Hz outdoor high voltage distribution equipment with 40.5kV rated voltage.
2.Can be used to open or close loading current,over-loading current and short-circuit current.
3.They conform to national standard GB194-2003 HV AC Vacuum Circuit Breaker, GB3309-1989 Mechanical Test at Ambient Temperature for High-voltage Switchgear and GB/T11022-1999 Common Specifications for High-voltage Switchgear and Controlgear Standards.
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Product Details

Structural characteristics

1.Adopts porcelain insulator support type.

2.Between the vacuum interrupter and porcelain insulator, current transformer and porcelain insulator, fill them by new type insulating blubber.

3.In order to prevent electrical components be affected with damp, the casing is filled with temperature and humidity controller and heater.

4.The height of the standard support: lateral type: 1520mm, central type: 1300mm, plateau type: 1200mm.


Main technical specification



Name

Unit

Data

1

Rated voltage

kV

40.5

2

Rated frequency

Hz

50

3

Rated current

A

1250

1600

2000

4

Rated short circuit breaking current

kA

20

25

31.5

5

Rated peak withstand current

kA

50

63

80

6

Rated short-circuit duration

s

4

7

Rated operating sequence

kV

O-0.3s-CO-180s-CO

8

Rated insulation

level

Power frequency

withstand voltage/1min

Dry test

kV

95

Wet test

kV

80

9

Lighting impulse withstand voltage(peak)


185

10

Breaking times of short circuit breaking current

Times

20

11

Mechanical endurance

Times

10000

12

Operating mechanism type


CT19BW-II


Following information is required for order

1.Full type name. Rated current, rated short-circuit breaking current.

2.Type of operating mechanism, installation method and relevant parameter.

3.The parameters of CT

4.If need installation support.

5.The surface treatment of circuit breaker and support.

6.The applying ambient conditions pf circuit breaker.

7.The name and quantity of spare parts and components.

8.For other special requirements.


Inquiry