24KV 1250A Side Mounted Embedded Solid Seal Switchgear Vacuum Circuit Break

Product Description
VCB-12 side mounted embedded solid seal switchgear VCB Vacuum Circuit Breaker


Intorduction:

VBR (VS1)- 12 side-mounted vacuum circuit breaker is an indoor high-voltage
switchgear for three-phase power system with rated voltage of 12 kV and frequency
of 50 Hz. It is used as protection and control electric appliance due to special
vacuum circuit breaker. Superiority, especially suitable for frequent operations
requiring rated current or multiple short-circuit currents.

The VBR (VS1)-12 type side-mounted vacuum circuit breaker is fixedly mounted and is
mainly used for fixed switchgear. The circuit breaker can be used alone or in ring
power supply, box type or various non-standard power supply. system.

The main technical parameters:

NO Item Units Technical parameters
1 Rated voltage kV 12
2 Maximum working voltage kV 12
3 Rated current A 630/1250 630/1250 630/1250/1600
4 Rated short-circuit breaking current kA 20 25 31.5
5 Rated short circuit closing current kA 50 63 80
6 Rated peak withstand current kA 50 63 80
7 4S rated short circuit withstand current kA 20 25
31.5
8


Rated insulation level Power frequency withstand voltage (before and after rated
breaking)
kV


42(Fracture:48)



Impact withstand voltage (before and after rated breaking)

75(Fracture:84)

9 Rated operation sequence 0-0.3s-Co-180s-Co
10 Mechanical life times 10000
11 Rated short circuit current breaking times times 50
12 Operating mechanism rated closing voltage (DC) V 110,220
13 Operating mechanism rated trip current (DC) V 110,200
14 Contact stroke mm 11±1
15 Overtravel (contact spring compression length) mm 3.5±0.5
16 Three-phase split and close bounce time ms ≤2
17 Contact closing bounce time ms ≤2
18 Average opening speed m/s 1.2±0.2
19 Average closing speed m/s 0.6±0.2
20 Opening time At the highest operating voltage s ≤0.05
At the lowest operating voltage ≤0.08
21 Closing time S 0.1
22 Main loop resistance of each phase μΩ 60 50
23 Dynamic and static contacts allow wear cumulative thickness mm 3

24KV 1250A Side Mounted Embedded Solid Seal Switchgear Vacuum Circuit Breaker
024KV 1250A Side Mounted Embedded Solid Seal Switchgear Vacuum Circuit Breaker
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