Grounding switch contact and direct-acting plug-in grounding switch with same

Abstract

The invention provides a grounding switch contact and a straight moving plug-in type grounding switch with the grounding switch contact. The grounding switch contact comprises a static end contact electrode and a moving end contact electrode, and the grounding switch contact further comprises a magnetic control device; the magnetic control device comprises a plurality of first cutting grooves and a plurality of second cutting grooves, wherein the first cutting grooves are arranged on the side wall of the static end contact electrode and used for changing the direction of electric current, the first cutting grooves comprise first spiral grooves which are arranged at the end, toward the moving end contact electrode, of the static end contact electrode, the second cutting grooves are arranged on the side wall of the moving end contact electrode and used for changing the direction of the electric current, the second cutting grooves comprise second spiral grooves which are arranged at the end, toward the static end contact electrode, of the moving end contact electrode, and the spiral directions of the first spiral grooves and the second spiral grooves are inverse. The technical scheme of the grounding switch contact and the straight moving plug-in type grounding switch with the grounding switch contact can effectively solve the problem that a straight moving plug-in type grounding switch in the prior art can not achieve the switch-off of large electric current.

Description

technical field [0001] The invention relates to the field of high-voltage switchgear equipment, in particular to a grounding switch contact and a direct-acting plug-in grounding switch having the same. Background technique [0002] In the power system, the earthing switch has the requirement of short-circuit making. When the grounding switch is closed, due to the phenomenon of "pre-voltage short-circuit fault" in the system, it is required that the closing process of the grounding switch can withstand the closing short-circuit load. According to the standard GB1985-2004, the E1 level earthing switch with short-circuit current making capability shall withstand two short-circuit making operations regardless of the voltage level. For E2 level earthing switches with short-circuit making current capability with a rated voltage of 40.5kV and below, the number of short-circuit making operations is increased to 5 times. [0003] The direct-operated plug-in grounding switch in the ...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a grounding switch contact and a direct-acting plug-in grounding switch with it, so as to solve the problem that the direct-acting plug-in grounding switch in the prior art is difficult to realize high-current closing

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