A Neutral Point and Shell Double Grounding System for Transformer

Abstract

The invention relates to a double grounding system for a neutral point and an outer shell of a transformer. Compared with the prior art, the grounding point of the transformer is easily corroded or disconnected, thereby causing major safety hazards. The invention includes a transformer, a grounding flat iron and a current transformer, the grounding flat iron is fixed and vertically installed on the grounding device, the neutral point of the transformer is connected with the current transformer, and the current transformer and the copper wire nose B of the grounding flat iron pass through The neutral point grounding wire is connected, and the grounding point of the transformer casing is connected to the copper wire nose A of the ground flat iron through the transformer casing grounding wire. The distance between copper wire nose A and copper wire nose B is 60mm, and the copper wire nose A and copper wire nose B are connected by wiring, and the specification of wiring is BVR35. The invention ensures that the effective grounding can continue to be maintained after a grounding terminal is corroded and disconnected.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a double grounding system for a neutral point and a shell of a transformer. Background technique [0002] my country's rural areas are vast, and the location of rural power grid lines is relatively complicated. In order to prevent lightning damage to distribution transformers during thunderstorm seasons and ensure the safe and stable operation of distribution transformers, power supply companies will implement lightning protection measures for transformers. At present, the lightning protection grounding of rural distribution transformers is generally divided into OP grounding mode and NP grounding mode. But from the point of view of practical application, there are certain deficiencies in these two grounding methods. Especially in areas with high levels of thunder and pollution, the grounding point is prone to corrosion or disconnection due to external effects, so that the ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect that the grounding point of the transformer is prone to corrosion or disconnection in the prior art, thereby causing major safety hazards, and to provide a double grounding system for the neutral point and the shell of the transformer to solve the above problems

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