Design of Novel Electrical Endurance Experimental System for AC Contactor

doi:10.16628/j.cnki.2095-8188.2021.02.010

Abstract

Abstract:

The accuracy of assessment in switching load capacity and reliability of AC contactor greatly depends on the electrical lifetime test method and system.Considering the optimization of contact materials,this paper introduced a novel electrical endurance experimental system for AC contactor,which is able to monitor the operating characteristic parameters of contactor.Moreover,the contact gap and magnetic gap can be flexibly adjusted.The system was used in analyzing the influence of contact gap on the operating characteristics,and the variations in electrical performance parameters.

Key words: AC contactor, electrical lifetime, contacts, failure analysis

CLC Number:

TM572.2

WANG Tianyang, ZHENG Zhe, ZHANG Xu, REN Wanbin. Design of Novel Electrical Endurance Experimental System for AC Contactor[J]. LOW VOLTAGE APPARATUS, 2021, 0(2): 48-53.

Figures/Tables 12

References 20

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试验参数	备注
试验环境	温度为19~22 ℃
触头材料	银氧化锡
线圈电压	AC 380 V
触头电压/电流	AC 380 V/16 A
负载条件	AC1
触头开距	5 mm(A相)、4 mm(B、C相)
动作频率	1.5 s通/1.5 s断

参量	A相	B相	C相
燃弧能量/mJ	1 719.01	7 796.08	2 623.59
燃弧时间/ms	2.526	6.704	3.177