Grounding device for TN-C-S power supply system

Abstract

The invention relates to a grounding device for a TN-C-S power supply system. The grounding device comprises a main body in a hollow quadrangular prism shape, wherein four groups of fixing rings are fixed to the upper end of the main body; a tapered fixing block is fixed to the lower end of the main body; a square connecting wire fixing block is welded on the right side of each fixing ring; a lifting rod is inserted into the top of each fixing ring; a fixing nut is nested outside the lifting rod; L-shaped fixing rings are engaged with the four corners of the main body; strip-shaped sliding slots are formed in the four sides of the main body; a second fixing rod is engaged with the inner sides of the sliding slots; the four groups of fixing rings are connected through the first fixing rod and are annularly nested outside the main body; and a first connecting rod is nested outside the first fixing rod. The grounding device for the TN-C-S power supply system is firm and stable in structure, cannot be inclined when fixed in the soil, is greatly improved in fixing effect, and is provided with an anti-separation structure on the outer side so as to be prevented from being detached from the soil layer under a non-human operation.

Description

technical field [0001] The invention relates to the technical field of power supply devices, in particular to a grounding device for a TN-C-S power supply system. Background technique [0002] The basic power supply systems used in N-C system, TN-S system, TN-C-S system, and TT system construction engineering power supply include three-phase three-wire system, three-phase four-wire system, etc., but the connotation of these terms is not very strict. The International Electrotechnical Commission (IEC) has made unified regulations on this, which are called TT system, TN system, and IT system. The TN system is divided into TN-C, TN-S, and TN-C-S systems. [0003] The grounding device used in the TN-C-S power supply system currently on the market has a relatively simple structure, which is a cylindrical iron rod, which is easily affected by the soil layer when buried underground, and the soil layer is prone to loosening under the erosion of rainwater. , the grounding device wil...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a grounding device for a TN-C-S power supply system to solve the problem that the structure of the grounding device for a TN-C-S power supply system on the market is relatively simple and is prone to skew in the soil layer. At the same time, the grounding device is easy to move upward from the soil layer and break away, which may easily lead to the breakage of the external connection line

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