VBDc-12 VCB/ Vacuum circuit breaker

VBDc-12 VCB/ Vacuum circuit breaker

1.The circuit breaker adopts modular operating mechanism and integrated energy charged handle.
2.The damaged components are easily disassembled and replaced
3.Primary part can adopt international brand embedded pole, it can protect vacuum interrupter from crash, dust and moist
4.Good environmental adaptability, less maintenance
5.It can adopt modular operating mechanism and assembly pole, which increase its insulation performance and is economical.
6.The circuit breaker meet the mechanical endurance of level M2, electrical endurance of E2.
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Product Details

Main technical specification of VBDc-12



Name

Unit

Data

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

1 min power frequency withstand voltage

kV

42

4

Rated lightning impulse withstand voltage

kV

75

5

Rated current

A

630

1250

1600

2000

2500

3150

4000*

 

 

6

 

Rated short circuit breaking current

 Rated thermal stability current (virtual value)

 

 

kA

20







25

25






31.5

31.5

31.5

31.5

31.5




40

40

40

40

40

40







50

 

 

7

 Rated short circuit making current (peak) 

Rated dynamic stable current (peak)

 

 

kA

50







63

63






80

80

80

80

80




100

100

100

100

100

100







125

8

Switching operations of short circuit breaking current

Cycle

30, 50*

9

Rated thermal stable duration

S

4

10

Rated operating sequence

V/A

O-0.3s-CO-180s-CO*

11

Mechanical life

Cycle

20000

12

Rated breaking current of single capacitor bank

A

630

13

Rated breaking current of back to back capacitor bank

A

400

Note:

1.When rated current is 4000A, switchgear shall be fitted with forced cooling.

2.When rated short circuit breaking current≤31.5kA, switching operations of rates short circuit current are 50 cycles.

  When the rated short circuit breaking current>31.5kA, switching operations of rated short circuit current are 30 cycles.

3.When rated short circuit breaking current≥40kA, rated operating sequence is O-180s-CO-180s-CO;

4.Data in 11 and 12 shall be supplied when needed.


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