一种绝缘件耐压试验设备及其试验方法

By using a small withstand voltage test device with SF6 gas-insulated voltage transformers and triple frequency equipment, combined with fully enclosed insulators and withstand voltage test structures, the problems of large size and high cost of existing equipment have been solved, and efficient electrical performance testing of small insulating components has been achieved.

CN115598480BActive Publication Date: 2026-07-17SHANGHAI WUSONG ELECTRIC IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI WUSONG ELECTRIC IND CO LTD
Filing Date
2022-10-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing insulation withstand voltage testing equipment is bulky, costly, and unsuitable for testing small insulation components. Furthermore, suppliers' electrical performance testing is not rigorous enough, leading to substandard product quality.

Method used

A 252kV SF6 gas-insulated voltage transformer was used as the transformer, and a third-frequency harmonic device was used for the pressure test. An electromagnetic voltage transformer was used to control the voltage. A fully enclosed insulator and withstand voltage test structure was designed, including pads, grounding springs and test fixtures. The test was carried out by injecting SF6 gas through vacuum.

Benefits of technology

It enables efficient and accurate testing of the electrical performance of small insulating components. The equipment is small in size, has high voltage and low partial discharge, and is easy to assemble and disassemble. It can cover the electrical performance testing of insulating components below 500KV, thus improving testing efficiency.

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Abstract

本发明公开了一种绝缘件耐压试验设备及其试验方法,包括变压器、盆式绝缘子与耐压测试结构,所述变压器具有壳体、二次接线盒、互感器高压部分以及互感器低压部分,其中二次接线盒设于壳体一侧,互感器高压部分设于壳体上侧且其与互感器低压部分对应;所述盆式绝缘子装于壳体顶部,盆式绝缘子的导体设于其中心,盆式绝缘子上设有耐压测试结构;所述耐压测试结构包括垫块、绝缘件、接地弹簧与试验工装,其中垫块用于安装固定绝缘件,垫块一端通过导体与互感器高压部分连接,垫块另一端与绝缘件连接。本发明采用252kV的SF6气体绝缘电压互感器作为变压器,二次测采用三倍频设备进行加压,对绝缘件电气性能进行试验,试验设备体积小,局放量小。
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