TY - GEN
T1 - An Experimental Investigation of Dynamic Welding Mechanism of Contacts Used in Low Current Switching Devices
AU - Zhang, Xu
AU - Zheng, Zhe
AU - Ren, Wanbin
AU - Zhou, Zhefeng
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - Dynamic welding failure mechanisms of silver metal oxide composite contact are hot topics in the area of low current switching devices and electrical contact materials. What is the root reason for contact dynamic welding in electrical endurance tests? Is it the degradation of the physical properties of the material or the variations of mechanical operation characteristics or the changes in contact surface morphology? In this paper, a series of electrical endurance tests (including resistive load and capacitive load) are conducted by using our designed model switch. The typical waveforms of dynamic force during contact break are recorded, and then the extraction method for occurred welding force value is presented. Further, the variations in contact gap, arc energy, bounce arc energy, and static contact force as a function of operation cycles are analyzed explicitly. Particularly, the distribution of welding force are counted and explained with the change of collected parameters. Finally, the possible dynamic welding failure mechanisms of contact materials is proposed.
AB - Dynamic welding failure mechanisms of silver metal oxide composite contact are hot topics in the area of low current switching devices and electrical contact materials. What is the root reason for contact dynamic welding in electrical endurance tests? Is it the degradation of the physical properties of the material or the variations of mechanical operation characteristics or the changes in contact surface morphology? In this paper, a series of electrical endurance tests (including resistive load and capacitive load) are conducted by using our designed model switch. The typical waveforms of dynamic force during contact break are recorded, and then the extraction method for occurred welding force value is presented. Further, the variations in contact gap, arc energy, bounce arc energy, and static contact force as a function of operation cycles are analyzed explicitly. Particularly, the distribution of welding force are counted and explained with the change of collected parameters. Finally, the possible dynamic welding failure mechanisms of contact materials is proposed.
KW - Arc erosion
KW - Dynamic welding
KW - Silver metal oxide contacts
KW - Surface morphology
KW - Welding force
UR - https://www.scopus.com/pages/publications/85061784572
U2 - 10.1109/HOLM.2018.8611741
DO - 10.1109/HOLM.2018.8611741
M3 - 会议稿件
AN - SCOPUS:85061784572
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 488
EP - 494
BT - Electrical Contacts - 2018, Proceedings of the 64th IEEE Holm Conference on Electrical Contacts, Holm 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 64th IEEE Holm Conference on Electrical Contacts, Holm 2018
Y2 - 14 October 2018 through 18 October 2018
ER -