Vacuum Circuit Breaker(VCB)12KV 24KV 36KV Fixed type VS1 12/630 VCB
Product Description
Product Description
BKV3(VS1)-12KV vacuum circuit breaker
VS1-Series embedded pole. vacuum circuit breakers are applicable to 12kV, three-phase AC 50Hz indoor switchgear and can serve as protection and control units for industrial and mining establishment transformer substation equipment. With modular and independent-frame design for their spring operating mechanisms, VS1-Series circuit breakers can operate with XGN15-12(24) mid-set and fixed switchgear. These circuit breakers are subject to both fixed installation and assembly with truck as a handcart unit
VS1-Series circuit breaker features high stability and high reliability
In terms of mechanisms, VS1-Series vacuum circuit breakers are given special optimization to transmission parts. Modular spring mechanisms have such advantages as convenient maintenance, short power-off maintenance, high versatility of parts, and boast better compatibility with vacuum interrupters which greatly improves the technical parameters and delivers more excellent performance.
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 * High-performance oil buffer
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
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 |