Ground clamp for detecting electrical equipment of transformer substation

Abstract

The invention relates to a ground clamp for detecting electrical equipment of a transformer substation. The ground clamp provided by the invention comprises a tabletting device, and a first clamping piece and a second clamping piece, which constitute a ground clamp main body, cutter teeth A for grinding the surface of a ground body are arranged on a clamping surface of the second clamping piece, the tabletting device comprises a pressing piece located between the first clamping piece and the second clamping piece, and a pressing rod vertically connected with the pressing piece, and the pressing rod is in threaded fit with a clamping portion of the first clamping piece to drive the pressing piece to approach to the clamping surface of the second clamping piece to clamp the ground body. Theground clamp provided by the invention can achieve the function of ensuring reliable connection and ensuring firmness corresponding to the clamping of different ground bodies, the problem that the ground clamp cannot reliably clamp a ground down conductor paved close to a foundation frame can be effectively avoided, the situation that the unreliable connection of the ground body endangers the safety of personnel and equipment, and the ground clamp has the advantages of being light and portable, simple in structure and convenient to use.

Description

technical field [0001] The invention relates to a grounding wire clip, in particular to a grounding wire clip used for testing electrical equipment in substations. Background technique [0002] When debugging with testing equipment, in order to ensure the safety of personnel and equipment, it is usually necessary to ground the testing equipment, commonly known as "protective grounding". Therefore, it is particularly important to ensure the reliability and firmness of the grounding connection in the process of electrical equipment testing. Whether the connection of the grounding wire is reliable and firm depends on the connection between the grounding wire clip and the grounding body. Because the grounding down-conductor of the electrical equipment in the substation is laid close to the infrastructure, the space around the grounding body is limited, resulting in the existing grounding wire clip. There are many deficiencies in use, which directly affect the on-site inspection...

AI Technical Summary

Problems solved by technology

Whether the connection of the grounding wire is reliable and firm depends on the connection between the grounding wire clip and the grounding body. Because the grounding down-conductor of the electrical equipment in the substation is laid close to the infrastructure, the space around the grounding body is limited, resulting in the existing grounding wire clip. There are many deficiencies in use, which directly affect the on-site inspection work, and even endanger the safety of inspection personnel and equipment, mainly in the following aspects: 1. When the grounding downconductor laid close to the basic structure is round steel ( When using a flat iron), the gap between the grounding round steel (flat iron) and the basic frame is too small, so that the grounding wire clamp cannot completely clamp the round steel (flat iron) due to the blockage of the basic frame, and the grounding wire clamp may fall off easily; When the body is seriously oxidized and corroded, the contact resistance at the clamping position of the grounding wire clamp is too large, resulting in "false grounding" or poor grounding

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