Grounding resistor

A technology of grounding resistors and resistors, which is applied in the direction of resistors, resistor components, circuits, etc., can solve the problems of difficult heat dissipation of resistors, complicated manufacturing, short circuit of resistors, etc., and achieve good heat dissipation effect and reasonable structural design.

Inactive Publication Date: 2012-08-08
SUZHOU LONG YUAN ELECTRICITY TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by its structure, the structural design is unreasonable, and the temperature rises during actual operation, especially under the instantaneous impact of high current, it can turn red and deform, resulting in a short circuit of the resistor, or even an accident. There are unsafe factors. restricted
In addition, some metal resistors are composed of pieces of metal sheets that are welded and stacked layer by layer. The above-mentioned structure is complicated to manufacture, and the resistors are not easy to dissipate heat, and the denser arrangement will cause dust accumulation, which will easily affect the normal operation of the resistors.

Method used

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Embodiment Construction

[0014] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0015] see figure 1 and figure 2 , the embodiment of the present invention includes: a grounding resistor, including a bracket 1, an insulator 2, a support link 3 and a combination resistance 4, the combination resistance 4 includes a plurality of groups of end-to-end welded resistance pieces 5, and the cross-section of the resistance pieces 5 is W type, the support connecting rod 3 is set with multiple rows of end-to-end welded resistance sheets 5, and the insulators 2 are installed at both ends of the supporting connecting rod 3.

[0016] In the grounding resistor of the present invention, there are at least four supporting connecting rods 3,...

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Abstract

The invention discloses a grounding resistor, which contains a support, insulators, a support link and combined resistors. The combined resistors contain multi-group head-tail welded resistance cards, cross section of which is W-shaped. The support link is provided with multi rows of head-tail welded resistance cards. The insulators are installed at the two ends of the support link. By the above mode, the grounding resistor provided by the invention can resist to high pressure and high temperature, and due to reasonable structural design, the resistance cards will not deform during the heavy current operation process.

Description

technical field [0001] The invention relates to the field of power grid systems, in particular to a grounding resistor used for a neutral point of a substation. Background technique [0002] At present, my country's distribution network generally adopts the neutral point through resistance grounding method to reduce single-phase grounding faults. The grounding resistors used in the power industry are generally made of metal sheets. With the wide application in the electromechanical industry, the technical requirements for high voltage resistors are getting higher and higher. [0003] In the prior art, the high-voltage resistor is mainly made of several flat plates with ribbed metal resistors in the middle, and insulating partitions are installed between them and installed on the supporting rods according to the series or parallel electrical connection. The two ends of the connecting rod are composed of insulators and resistors, and most of the high-current resistors are conn...

Claims

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Application Information

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IPC IPC(8): H01C3/12H01C1/014
Inventor 朱剑华
Owner SUZHOU LONG YUAN ELECTRICITY TECH
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