Application of High Grade Silver Tin Oxide Contact Material in AC Contactor

doi:10.16628/j.cnki.2095-8188.2022.01.015

Abstract

Abstract:

A series of high-grade AgSnO₂ and AgCdO electrical contact materials were prepared by different manufacturing processes.The physical properties and microstructure of AgSnO₂ synthesized by pre-oxidation and AgCdO prepared by various processes (internal oxidation and pre-oxidation) were compared and analyzed.The performance of different current levels AC contactor of service cycle life and contact temperature rise and so on were also carried out and the corresponding mechanism of life failure was also investigated.The experimental results show that the high grade AgSnO₂(15) electrical contact material has better service life compared with the traditional high grade AgCdO material in the application test of low current grade 32 A and high current grade 95 A contactors.

Key words: high grade silver tin oxide, pre-oxidation, AC contactor, electrical contact material, electrical life

CLC Number:

TM572.2

XIAO Tifeng, WANG Jian, ZHU Yingping, HU Juejia. Application of High Grade Silver Tin Oxide Contact Material in AC Contactor[J]. LOW VOLTAGE APPARATUS, 2022, 0(1): 73-78.

Figures/Tables 16

References 10

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参数	数值
参数	CJX2-32	CJX2-95
I_make /A	196	570
I_break/A	196	570
U_make/V	400	400
U_break/V	400	400
cosφ	0.35	0.35
操作频次/次	300	120

参数	测试要求	实测条件
使用类别	AC-4	AC-4
线圈电压U_s/V	230	230
额定电压U_e/V	400	400
额定电流I_e/A	32	32
试验电压U_c/V	U_e (1±5%)	393.1
试验电流I_c/A	6I_e (1±5%)	192.6
功率因数cosφ	0.35±0.05	0.35
停电时间/ms	≥50	>50
操作频率/(次·h^-1)	240 (客户要求)	240
试验次数/次	失效 (客户要求)	39 055
试验时不应发生持续燃弧、相间飞弧、接地回路中的熔断体熔断或触头熔焊		试品B相断相

参数	测试数据
参数	AgSnO₂ (15)	AgSnO₂ (15)	AgSnO₂ (15)	AgCdO(15) (I.O.)	AgCdO(15) (Pre I.O.)
寿命次数/次	37 653	37 653	37 653	30 123	17 908
失效方式	正常	正常	缺相	缺相	缺相

位置	温升/K
位置	AgSnO₂ (15)	AgSnO₂ (15)	AgSnO₂ (15)	AgCdO(15) (I.O.)
1/L1	49.6	40.9	54.0	45.0
3/L2	48.7	42.9	58.1	48.5
5/L3	40.9	43.2	57.7	47.9
2/T1	37.5	42.9	59.7	49.0
4/T2	50.0	42.2	57.7	51.7
6/T3	38.3	42.3	55.2	50.2

参数	测试数据
参数	AgSnO₂ (15)	AgSnO₂ (15)	AgCdO(15) (I.O.)	AgCdO(15) (Pre I.O.)
寿命次数	30 586	31 327	16 963	9 071
失效方式	缺相	熔焊	缺相	熔焊