Measurement and Analysis of Relationship between Reeds and Arc Motion of Clapper Relay

doi:10.16628/j.cnki.2095-8188.2020.02.001

Abstract

Abstract: In the process of breaking AC load,a small clapper power relay will generate high-energy arc which will erode the contact.At the same time,due to the reed vibration,the arc often runs out of the contact and damage the reed,which will seriously affect the electrical life and reliability of the relay.In order to study the impact of reed vibration on the arc motion and provide the foundation for the optimal design of the relay structure,this paper presented a test method based on high speed camera technology to test images of the reeds and electric arcs synchronously and obtains their motion curves by image processing.Then the stiffness of the moving reed and the static reed was modified by the control variable method and the key factors affecting the arc motion were analyzed.The results show that reducing the reed vibration is beneficial to reducing the arc motion range and making the arc relatively stable on the contact surface.

Key words: small clapper power relay, reed, alternating current arc, high-speed camera

CLC Number:

TM58

ZHANG Xing, LIU Xiangjun. Measurement and Analysis of Relationship between Reeds and Arc Motion of Clapper Relay[J]. DIANQI YU NENGXIAO GUANLI JISHU, 2020, 587(2): 1-7.

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