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Contact arm bushing suitable to be used at nominal voltage class of 24kV and below

A technology of voltage level and rated voltage, applied in the direction of circuits, electrical components, insulators, etc., can solve the problems of small creepage distance and failure to meet the requirements of power frequency tests, etc., and achieve the effect of small structure, low manufacturing cost and improved insulation strength

Inactive Publication Date: 2015-12-16
CHINT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact arm bushings used for the rated voltage of 24kV are all straight cylinders at present, and their defects are: the creepage distance is small, which cannot meet the requirements of the power frequency test

Method used

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  • Contact arm bushing suitable to be used at nominal voltage class of 24kV and below

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Embodiment Construction

[0010] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0011] Such as figure 1 As shown, the present invention provides a contact sleeve suitable for rated voltages of 24kV and below, which includes a cylindrical body 1, a multi-turn outer shed structure 2 located on the cylindrical body 1, and a multi-turn inner shed Skirt structure3. The multi-turn outer shed structure 2 and the multi-turn inner shed structure 3 are respectively arranged on the outer peripheral surface and the inner wall peripheral surface of the cylindrical body 1 . Wherein, the outer shed structure 2 and the inner shed structure 3 are both circumferential structures, the outer shed structure 2 is a circumferential structure protruding from the outer surface; the inner shed structure 3 is an embedded circumferential structure on the inner surface. The creepage distance is increased through the outer shed structur...

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Abstract

The invention provides a contact arm bushing suitable to be used at nominal voltage class of 24kV and below. The contact arm bushing comprises a cylindrical body, and is characterized in that the outer circumferential surface of the cylindrical body is provided with a plurality of circles of external shed structures, and / or a plurality of circles of internal shed structures are arranged on the circumferential surface of the inwall of the cylindrical body. The contact arm bushing provided by the invention overcomes the deficiencies in the prior art, is applicable to products with nominal voltage of 24kV and below, is small in structure, has low manufacturing cost, and is convenient and simple in installation.

Description

technical field [0001] The invention relates to a contact arm sleeve suitable for rated voltages of 24kV and below, and belongs to the field of high and low voltage electrical appliances. Background technique [0002] Most of the traditional contact sleeves are used in power systems with a rated voltage of 12kV. The contact bushings used for the rated voltage of 24kV are all straight cylinders at present, and their defects are: the creepage distance is small, which cannot meet the requirements of the power frequency test. Contents of the invention [0003] The purpose of the present invention is to provide a contact arm bushing for a rated voltage of 24kV that meets the creepage requirement. [0004] In order to achieve the above object, the technical solution of the present invention is to provide a contact arm sleeve suitable for rated voltage 24kV and below, including a cylindrical body, characterized in that: on the outer peripheral surface of the cylindrical body, th...

Claims

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Application Information

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IPC IPC(8): H01B17/58H01B17/42
Inventor 王礼君舒国标
Owner CHINT ELECTRIC