Influence of operation numbers on arc erosion of Ag/CuO electrical contact material

2020 ◽  
Vol 31 (3) ◽  
pp. 2497-2513 ◽  
Author(s):  
Qiong Wu ◽  
Guofu Xu ◽  
Meng Yuan ◽  
Chunping Wu
Keyword(s):  
Electrical Contact ◽  
Contact Material ◽  
Arc Erosion ◽  
Electrical Contact Material

Arc erosion behavior and mechanism of Cu/Cr20 electrical contact material

Vacuum ◽  
2017 ◽  
Vol 143 ◽  
pp. 129-137 ◽  
Author(s):  
Shunxin Zhu ◽  
Yong Liu ◽  
Baohong Tian ◽  
Yi Zhang ◽  
Kexing Song
Keyword(s):  
Electrical Contact ◽  
Contact Material ◽  
Arc Erosion ◽  
Erosion Behavior ◽  
Electrical Contact Material

The Contact Resistance and Arc Erosion Behavior of Separable CP-Nb-Cr/Cu-Cd Electrical Contact Material

2007 ◽  
Vol 353-358 ◽  
pp. 886-889 ◽  
Author(s):  
Yu Sheng Cui ◽  
Liang Zhen ◽  
Y. Wang ◽  
Wen Zhu Shao ◽  
V.V. Ivanov
Keyword(s):  
Surface Layer ◽  
Contact Resistance ◽  
Electrical Contact ◽  
Composition Analysis ◽  
Contact Material ◽  
Arc Erosion ◽  
Electrical Arc ◽  
Electrical Contact Material ◽  
Microstructure Observation ◽  
Powder Metallurgy Process

CP-Nb-Cr/Cu-Cd electrical contact material, which contains 1.7wt.% of Cd, 0.5wt.% of CP (man-made diamond particles), 2.0 wt.% of Nb and 0.7 wt.% of Cr, was fabricated by powder metallurgy process. The contact material was installed in different ac contactors covering current range from 40 to 630A. While tested under AC-4 electrical load, the electrical contact material was worn out gradually by repeated electrical arc, and microstructure of the arc-affected surface layer changed dramatically. Mechanism of arc erosion process and contact resistance fluctuation was discussed by corresponding microstructure observation and chemical composition analysis of the surface layer. CP-Nb-Cr/Cu-Cd electrical contact material is capable to be used in 63~250A ac contactors under AC-4 working conditions.

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