VS1 12KV Indoor VCB vacuum circuit breaker

KEY WORDS:High pressure vacuum switch

DETAILS

Indoor high voltage vacuum circuit breaker (circuit breaker) is suitable for indoor switchgear of 12kv power system. As a protection and control unit for power grid equipment and industrial and mining enterprise power design, it is suitable for switching various loads of different nature, frequent operations, and multiple interruption of short-circuit current.

The product adopts a new type of circuit breaker operating mechanism,

1. The primary part of VSC can use solid-sealed pole poles of international brands, and the vacuum interrupter and main conductive circuit parts can be solid-sealed into a whole

2. Protect the interrupter from impact, dust and condensation

3. Strong environmental adaptability, greatly reducing operation and maintenance costs

4. The operating mechanism is integrated with the circuit breaker body, which has been verified by type tests

5. With E2 electrical life, M12 mechanical life

Environmental requirements

1. Ambient temperature: highest temperature + 4O℃, lowest temperature -15℃

2. Environmental humidity: daily average relative humidity ≤95%, monthly average relative humidity: ≤90%, daily average vapor pressure ≤22×10-3MPa, monthly average vapor pressure ≤1.8×10-3MPa.

3. Altitude: not more than 1000m;

4. The earthquake intensity does not exceed 8 degrees;

5. The surrounding air is not significantly polluted by dust, smoke, corrosive and/or flammable gas, steam or salt spray.

Note: If it exceeds the requirements of the above normal use environmental conditions, it is necessary to negotiate with the manufacturer.

 

 

 Item

Unit

Data

1

Rated voltage 

 

12

2

Maximum working voltage

kv

12

3

Rated current 

A

630  1250

630  1250

4

Rated short-circuit break current

kA

20/25

31.5

5

Rated short-circuit close current (peak value)

kA

50/63

80

6

Rated withstand current (peak value)

kA

50/63

80

7

4S Rated little withstand current

kA

20/25

31.5

8

Rated insulation level

Industrial frequency withstand voltage

kA

42/48

Thunder impulse 

withstand voltage

75/85

9

Rated operation order

 

Off-0.3S on and off-180S-on and off

10

Mechanical life

times

10000

11

Rated short-circuit current break and close time

times

50

12

Speak and move organization amount assign the current 

of the floodgate(DC)

V

AC.DC.110,220

13

Speak and move organization amount equal to  the current 

of the floodgate(DC)

V

AC.DC 110,220

14

Switching distance of the contact

mm

>11

15

Ultra journey(touches the head spring and compress length)

mm

4+/-0.5

16

Three-phase breaking into  shut 

floodgate sex of the same period 

ms

<2

17

Touch the head and shut a  floodgate of time of bouncing 

ms

<2

18

Average speed of breaking brake 

m/s

0.9~1.7

19

Average speed of closing brake 

m/s

0.6~1.0

20

Time of breaking brake 

Operate it under the 

voltage highest 

s

<0.05

 

Operate it under the 

voltage lowest

<0.08

21

Time of closing brake 

s

<0.1

22

Each the resistance of main return circuit

u  Ω

<45

23

Allowance abrasion cumulated thickness 

of the moving and stationary contact

mm

3

RETURN

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