VS1-24 indoor drawout circuit breaker 24kv(embedded pole)
Applicable standards
1EC62271-100 High-voltage switchgear and control-gear-Part 100: Alternating-current circuit-breakers
High-performance oil buffer
High-performance breaking buffer can markedly reduce the overshoot and rebounding amplitudes of the moving contact of a vacuum circuit breaker in breaking thus avoiding the loss of mechanical endurance due to partial over fatigue of vacuum interrupter bellows resulting from moving contact overshoot. As the rebounding amplitudes of the moving contact reduces, No re-ignition and restrike is found during the switching capacitor bank test
Technical parameter:
|
Item |
Unit |
20kA |
25kA |
31.5kA |
40kA |
|
|
Rated Voltage |
kV |
20 |
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|
Max working voltage |
kV |
24 |
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|
Rated Current |
A |
630 |
1250 |
1250 |
1250 |
|
|
Rated short circuit breaking current |
kA |
20 |
25 |
31.5 |
40 |
|
|
Rated short circuit making current (peak) |
kA |
50 |
63 |
80 |
100 |
|
|
Rated peak withstand current |
kA |
50 |
63 |
80 |
100 |
|
|
4s rated short time withstand current |
kA |
20 |
25 |
31.5 |
40 |
|
|
Rated insulation |
Power frequency withstand voltage |
kV |
42(fracture48) |
|||
|
Impulse withstand voltage |
75(fracture85) |
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|
Rated sequence of operation |
|
0-0.3s-CO-180s-CO |
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|
Mechanical life |
time |
10000 |
||||
|
Breaking times of rated short circuit breaking current |
time |
50 |
||||
|
Operating voltage |
V |
AC/DC110, 220 |
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|
Moving contactor travel |
mm |
11±1 |
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|
Contactor over travel |
mm |
4±0.5 |
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|
Three-phase opening/closing asynchronous |
ms |
≤2 |
||||
|
Contact closing bounce time |
ms |
≤2 |
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|
Average opening speed |
m/s |
0.9~1.2 |
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|
Average closing speed |
m/s |
0.4~0.8 |
||||
|
Opening time |
Under max operation voltage |
s |
≤0.05 |
|||
|
Under min operation voltage |
≤0.08 |
|||||
|
Closing time |
s |
≤0.1 |
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|
Each phase main loop resistance |
µΩ |
≤40 |
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|
Allowable attrition thickness of moving and fixed contact |
mm |
3 |
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