Multi-stage arc suppressing breaking device for extra-high voltage circuit breaker
A technology of breaking device and circuit breaker, which is applied to high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problem of unavoidable opening overvoltage, etc., and achieves large rated current, convenient installation and use, and wide application range. Effect
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[0023] As shown in the drawings, the UHV circuit breaker multi-stage arc extinguishing and breaking device according to the present invention includes a housing 1, an insulating cylinder 7 installed in the housing 1, and static contacts and moving contacts arranged in the insulating cylinder 7 . There is an air chamber 77 between the shell 1 and the insulating cylinder 7, and the air chamber 77 can be filled with insulating gas such as SF6 to improve the insulation effect. In addition, for the convenience of installation, the insulating cylinder 7 is designed as a structure that can be installed in sections. The insulating cylinder 7 includes an outer cylinder and an inner cylinder sleeved in the outer cylinder. The inner cylinder has a segmented structure, and the horizontally arranged components such as the insulating guide plate 34, the inner insulating support plate 72 and the outer insulating support plate 73 are installed on each segment of the inner cylinder. Junction....
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