全绝缘喷射式熔断器的设计及其机理分析

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Abstract The fuse is used most widely as the power-distribution-equipment protective device. This paper designs a new type of fully insulated jet-type fuse. It has an integrative structure of full insulation and enclosed type, which can effectively avoid the influence of environmental factors on its performance. The slit arc-control method combined with mechanical ejection theory improves the closing stability, the performance of arc control and the security of the fuse. This paper studies the transient process of the fuse’s broken short-circuit current, and establishes the mathematical model of the fuse-melting physical process, and analyses changes of resistivity in the fuse-melting process. In order to verify the reliability of the fully insulated jet-type fuse, the arc-melting time of the fuse at 5% of rated current, rated current and 1.3 times of rated current are respectively measured.

Key words： fuse full insulation jet-type slit arc-control arc-melting time

Received: 09 January 2019 Published: 19 August 2019

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	Articles by authors
	Xie Longjun
	Ni Zhouhui
	Wang Guoyi
	Chen Zhenhu
	Xu Lili

Cite this article:

Xie Longjun,Ni Zhouhui,Wang Guoyi等. Design and mechanism analysis of fully insulated jet-type fuse[J]. Electrical Engineering, 2019, 20(8): 75-79.

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http://dqjs.cesmedia.cn/EN/Y2019/V20/I8/75

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