Combined electrical apparatus of indoor high-pressure vacuum circuit breaker and isolation/ground switch

Abstract

The invention relates a high-voltage electrical apparatus, and particularly relates to a combined electrical apparatus of an indoor high-pressure vacuum circuit breaker and an isolation / ground switch, and the combined electrical apparatus is of an integral structure. A circuit breaker is an epoxy sealing type vacuum circuit breaker, is in side-mounted arrangement and is fixedly mounted; a three-position isolation / ground switch is of a rotary structure, a switch blade base of a moving switch blade is directly fixed on a connecting terminal on the vacuum circuit breaker, the moving switch blade is driven to rotate by an operating mechanism through an insulation skeleton, thereby finishing isolation, switch-on and grounding three-position operation; multiple pairs of contact plates of a moving contact of the three-position isolation / ground switch are of a duckbill and spherical contact structure, the moving switch blade can properly swing, and the electrical conduction reliability of a branch bus and an earthing static contact is guaranteed; and the operating mechanism is electrically operated and also can be manually operated. The combined electrical apparatus provided by the invention has the advantages of modern design, compact structure, small volume, short conducting loop, less connection point, low manufacturing cost, high operational reliability and the like.

Description

technical field [0001] The invention relates to a high-voltage electrical appliance, in particular to an indoor high-voltage vacuum circuit breaker, an isolating and grounding switch combined electrical appliance. The invention belongs to the field of 3.6-40.5kV high-voltage electrical appliances. Background technique [0002] Currently public indoor high-voltage vacuum circuit breakers, indoor high-voltage isolating switches and indoor high-voltage grounding switches and other switching components are the main electrical components in AC metal-enclosed switchgear (high-voltage switchgear). Not only are they all single-function products, but their overall structure is mostly a formal arrangement, that is, the arrangement direction of the three-phase conductive circuit is parallel to the front of the AC metal-enclosed switchgear. During installation and operation, it not only takes up a lot of space, but also consumes a lot of copper conductors for electrical connection, res...

AI Technical Summary

Problems solved by technology

Even though there are a small number of isolation and grounding switch combination products in use, none of their operating mechanisms are electric, which cannot meet the requirements for remote control of smart grids

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