Reoccurrence of Contact Welding Failure Phenomenon and Failure Mechanism of Miniature Relay

doi:10.16628/j.cnki.2095-8188.2021.10.009

Abstract

Abstract:

Contact welding failure extremely limits the development trend of miniature relay with long life and high reliability.A special designed test rig is used for the simulation of the electrical performance of contact break and make behavior according to the operation features of miniature relay.The variation in sensitive parameters,including arcing duration,breakaway time,contact resistance and bounce energy,as a function of operation cycles it presented.The precursors of contact welding failure phenomenon are determined.The eroded surface morphologies of failed contacts are obtained.Finally,the contact welding failure mechanism of miniature relay is presented.

Key words: miniature relay, electrical contact, contact welding, breakaway time, failure mechanism

CLC Number:

TM581

ZHANG Xu, ZHENG Zhe, LUO Fubiao, ZHOU Zhefeng, REN Wanbin. Reoccurrence of Contact Welding Failure Phenomenon and Failure Mechanism of Miniature Relay[J]. LOW VOLTAGE APPARATUS, 2021, 0(10): 52-56.

Figures/Tables 12

References 12

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