VGB-12kV Series Medium Voltage Solid Sealed Vacuum Circuit Breaker
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VGB-12 series vacuum circuit breaker is a new generation of indoor vacuum circuit breaker with modular operating mechanism developed by Xiamen Wilshenge Electric Industry Co., Ltd. It is used for indoor switchgear of 12KV power system as protection and control unit of power grid equipment and power equipment of industrial and mining enterprises. With a wide range of compatibility and interchangeability, it can be used for central switch cabinets and fixed switch cabinets. It is suitable for frequent operation with rated working current or places where short-circuit current is broken for many times.
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- Commodity name: VGB-12kV Series Medium Voltage Solid Sealed Vacuum Circuit Breaker
VGB-12 series vacuum circuit breaker is a new generation of indoor vacuum circuit breaker with modular operating mechanism developed by Xiamen Wilshenge Electric Industry Co., Ltd. It is used for indoor switchgear of 12KV power system as protection and control unit of power grid equipment and power equipment of industrial and mining enterprises. With a wide range of compatibility and interchangeability, it can be used for central switch cabinets and fixed switch cabinets. It is suitable for frequent operation with rated working current or places where short-circuit current is broken for many times.
Main technical parameters
Rated voltage: 3.6kV、7.2kV、12kV Rated current: 630~4000A Rated short-time power frequency withstand voltage (1nin): 42kV Rated lightning impulse withstand voltage (peak): 75kV Rated short-circuit breaking current: 25~40kA Rated short-circuit closing current (peak): 63~100kA Rated short-time withstand current: 25~40kA Rated peak withstand current: 63~100kA Rated short-circuit current duration: 4s Rated number of short-circuit breaking current: 50 times (40kA is 30 times) Mechanical life: 30000 times/20000 times (12kV) Rated frequency: 50HZ Rated operating sequence: Automatic reclosing: sub -0.3s-combined sub -180s-combined sub-
Automatic reclosing: sub -0.3s-combined sub -15s-combined sub-
Non-automatic reclosing: sub -180s-combined sub -180s-combined sub-
Key words:
Explosion-proof monitoring
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