Applicable standards
1EC62271-100 High-voltage switchgear and control-gear-Part 100: Alternating-current circuit-breakers
Secondary circuit
VS1-Series vacuum circuit breakers adopt modular design for their secondary control circuit boards. The electric connection of the mechanisms employs high-grade self-fastener plugs, which both facilitates replacement and ensures reliable electrical connection.
Technical parameter:
|
Item |
Unit |
20kA |
25kA |
31.5kA |
40kA |
|
|
Rated Voltage |
kV |
20 |
||||
|
Max working voltage |
kV |
24 |
||||
|
Rated Current |
A |
630 |
1250 |
1600 |
1600 |
|
|
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) |
|||||
|
Rated sequence of operation |
|
0-0.3s-CO-180s-CO |
||||
|
Mechanical life |
time |
10000 |
||||
|
Breaking times of rated short circuit breaking current |
time |
50 |
||||
|
Operating voltage |
V |
AC/DC110, 220 |
||||
|
Moving contactor travel |
mm |
11±1 |
||||
|
Contactor over travel |
mm |
4±0.5 |
||||
|
Three-phase opening/closing asynchronous |
ms |
≤2 |
||||
|
Contact closing bounce time |
ms |
≤2 |
||||
|
Average opening speed |
m/s |
0.9~1.2 |
||||
|
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 |
||||
|
Each phase main loop resistance |
µΩ |
≤40 |
||||
|
Allowable attrition thickness of moving and fixed contact |
mm |
3 |
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