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

Abstract

The invention provides a grounding switch contact and a straight movement plug-in type grounding switch with the grounding switch contact. The grounding switch contact comprises a static end contact electrode and a dynamic end contact electrode, wherein the static end contact electrode is fixedly arranged, and the dynamic end contact electrode is movably arranged in the axial direction of the static end contact electrode and has a conduction position at which the dynamic end contact electrode and the static end contact electrode can be embedded to each other and a disconnection position at which the dynamic end contact electrode and the static end contact electrode can be separated from each other. The grounding switch contact further comprises a magnetic control device, and when the dynamic end contact electrode is switched to the conduction position from the disconnection position and generates a pre-breakdown arc, the magnetic control device can generate a transverse magnetic field perpendicular to the pre-breakdown arc or a longitudinal magnetic field parallel to the pre-breakdown arc through the current of the static end contact electrode and the current of the dynamic end contact electrode. Due to the technical scheme, the problem that a straight movement plug-in type grounding switch in the prior art cannot be turned off or on easily at a large current can be effectively solved.

Description

technical field [0001] The invention relates to the field of high-voltage switch cabinet 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 grounding switch has the need for short-circuit making. During the closing operation of the grounding switch, 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 grounding switch with short-circuit current making ability should withstand two short-circuit making operations regardless of the voltage level. For E2-level earthing switches with rated voltage 40.5kV and below with short-circuit making current capability, the number of short-circuit making operations is increased to 5 times. [0003] The direct-acting plug-in grounding switch...

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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