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Dongli Electric

High and low voltage switchgear structure and technology?


Release time:

2020-08-31

The main structure of high and low voltage switchgear is composed of cabinet, circuit grounding mechanical switch, comprehensive protection mechanism, high voltage vacuum circuit breaker, spring energy storage operating mechanism and car.

1,High and low voltage switchgearThe main structure is composed of cabinet, circuit grounding mechanical switch, comprehensive protection mechanism, high voltage vacuum circuit breaker, spring energy storage operation mechanism and car.

2,High and low voltage switchgearThe cabinet body is formed into a closed structure by compressing and cutting iron plates. The cabinet body is designed into a plurality of installation modules, which can be installed as bus bar module, electrical instrument module, cable module and trolley module respectively. The upper iron plate is used to isolate each installation module. The bus bar module is used to install the bus bar of the three-phase system, the electrical instrument module is equipped with electrical components such as current instruments, voltage instruments and comprehensive protectors. The cable module is used to connect external power cables, and the trolley module is equipped with high-voltage vacuum circuit breakers and trolleys.

3, itsHigh and low voltage switchgearThe structure of the high-voltage vacuum circuit breaker in is to install the main contact into a closed vacuum chamber, and use the on-off function of the contact to support the ignition of the arc of the switch cabinet without gas. In order to prevent the equipment from being burned out by the arc, the insulation performance of the high-voltage switch cabinet can be indirectly increased by using a base with insulation function for a long time.

4. The structure of the locomotive mechanism is mainly to provide installation space for the high-voltage vacuum circuit breaker. When the trolley handle shakes clockwise, it can follow the trolley to move until the switch cabinet will carry the vacuum circuit breaker to the high-voltage circuit. If the handle of the trolley is shaken counterclockwise, the trolley will exit the switch cabinet with the track movement and will drive the circuit breaker away from the high voltage circuit.