Research on Digital Precision Measurement Technology and Micro-Breaking Performance Improvement of Miniature Circuit Breaker

doi:10.16628/j.cnki.2095-8188.2021.08.002

Abstract

Abstract:

In this paper,the digital precision measurement techniques such as laser shadow technology,laser light-filling high-speed photography and splitter voltage measurement system are used to quantitatively analyze the miniature circuit breaker(MCB) arc behavior and parameter of arc starting,arc root transfer and splitter voltage in the short-circuit breaking.By analyzing the arc motion behavior,the factors affecting the arc motion are diagnosed and the precise optimization scheme is provided.A certain type of YL miniature circuit breaker was taken as an example.Firstly,the parameters of arc motion are measured by digital precision,and then through diagnosis and analysis,two optimization schemes of optimizing arc starting angle and enlarging arc starting plate are given.Through improvement and optimization,the breaking capacity of the miniature circuit breaker is rapidly improved.The above results show that the digital precision measurement technology can provide a rapid precision diagnosis for the improvement of the breaking performance of the miniature circuit breaker,and has great practical significance in engineering.

Key words: precision measurement, miniature circuit breaker, high speed photography, splitter voltage, short circuit breaking

CLC Number:

TM561

YANG Wenqiang, ZHANG Baoliang, ZHANG Penghe, YUAN Xuebing, ZHAO Hu. Research on Digital Precision Measurement Technology and Micro-Breaking Performance Improvement of Miniature Circuit Breaker[J]. LOW VOLTAGE APPARATUS, 2021, 0(8): 6-10.

Figures/Tables 13

References 18

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项目	触头打开时间/ms	弧根转移时间/ms
原模型	2.0	1.5
方案1	2.1	1.4
方案2	1.9	1.3