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Zhejiang Chakai Electrical Co., Ltd
China Manufacturer with main products: Vacuum Circuit Breaker, Indoor High-Voltage Vacuum load switch, High-Voltage operation mechanism, Cable tapping box, Complete set switch... |
vacuum circuit breaker
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Specifications
|
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 | ||||
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