Brand: changkai
Model: VS1
Min. Order: 1
vacuum circuit breaker
MV circuit breaker
indoor circuit breaker
General

VCBI series high-voltage vacuum circuit breaker is a kind of indoor high-voltage switch equipment with 50Hz three-phase alternating current and 12Kv rated voltage, which combined the technique of the ABB Corporation in Switzerland and domestic development state and manufacturing capability. The general framework of this product is taken the form combined the front body and operation system into one.

Because it adopted the composite insulated material, there is no pollution and explosion danger, the insulation level is high.



■Technical parameter

Serial number
Item
Unit
Data

31.5kA
40kA
50kA

1
Rated voltage
kV
12

2
Maximum working voltage
kV
12

3
Rated current
A
1250,1600

2000,2500
1250,1600

2500,3150
1250,2500

3150

4
Rated short-circuit break current
kA
31.5
40
50

5
Rated short-circuit close current (peak value)
kA
80
100
125

6
Rated peak value withstand current
kA
80
100
125

7
4S Rated little withstand current
kA
31.5
40
50

8
Rated in sudation level
Industrial frequency withstand voltage
kV
45(fracture 84)

Thunder impulse withstand voltage
75(fracture 84)

9
Rated operation order

Off-0.3S on and off-180S-on and off

10
Mechanical life-span
Times
10000

11
Rated short-circuit current break and close time
Times
50

12
Speak and move organization amount equal to the voltage of the floodgate (DC)
V
110,220

13
Speak and move organization amount assign the current of the floodgate (DC)
V
110,220

14
Switching distance of the contact
mm
11±1

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
0.9~1.2

19
Average speed of closing brake
M/s
0.6~0.8

20
Time of breaking brake
Operate it under the voltage highest
S
≤0.05

Operate it under the voltage the most low
≤0.08

21
Time of closing brake
S
≤0.1

22
Each the resistance of main return circuit
μΩ
≤40

23
Allowance abrasion cumulated thickness of the moving and stationary contact
mm
3