TY - GEN
T1 - Experimental study on electric resistance of tilted contact in air circuit breaker
AU - Qu, Jianyu
AU - Li, Xingwen
AU - Wang, Qian
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/12/9
Y1 - 2016/12/9
N2 - Due to the structure of multiple movable contacts in parallel in Air circuit breakers, the outer movable contacts tilt seriously when enduring the large short-circuit current. This paper is aimed to investigate the resistance of the tilted contact. A new designed experimental setup is built. Especially, the tilt angle and the contact force are able to be adjusted. Based on the measured results, it is found that the contact resistance is increased seriously when the movable contact starts tilting. After the contact type changing from the line contact to the point contact and the contact center offsetting to the edge of the movable contact, the contact resistance is increased gently with the tilt angle. At that time, the contact resistance is about 2.8 times of that without tilting, in the case that the contact materials are AgW50 and AgNi30, and the contact force is 105N.
AB - Due to the structure of multiple movable contacts in parallel in Air circuit breakers, the outer movable contacts tilt seriously when enduring the large short-circuit current. This paper is aimed to investigate the resistance of the tilted contact. A new designed experimental setup is built. Especially, the tilt angle and the contact force are able to be adjusted. Based on the measured results, it is found that the contact resistance is increased seriously when the movable contact starts tilting. After the contact type changing from the line contact to the point contact and the contact center offsetting to the edge of the movable contact, the contact resistance is increased gently with the tilt angle. At that time, the contact resistance is about 2.8 times of that without tilting, in the case that the contact materials are AgW50 and AgNi30, and the contact force is 105N.
KW - air circuit breaker
KW - contact resistance
KW - contact tilt
KW - electric contact
KW - short-Time withstand current
UR - https://www.scopus.com/pages/publications/85009431317
U2 - 10.1109/HOLM.2016.7780017
DO - 10.1109/HOLM.2016.7780017
M3 - 会议稿件
AN - SCOPUS:85009431317
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 115
EP - 118
BT - Proceedings of the 62nd IEEE Holm Conference on Electrical Contacts, Holm 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 62nd IEEE Holm Conference on Electrical Contacts, Holm 2016
Y2 - 9 October 2016 through 12 October 2016
ER -