Title :
Magnetic field and vacuum arc of new TMF-AMF contact
Author :
Min Li;Xiaoqin Wang;Wenyi Li;Shuping Sun
Author_Institution :
Vacuum interrupter business, Tianjin Pinggao Intelligent Electric Co., Ltd., Tianjin, China
Abstract :
This paper introduces a new type TMF-AMF contact which used in high current interruption process. It has lower bulk resistance (3.28μΩ) of the conductive circuit compared with conventional one by introducing a 4 turn TMF coil and a 6 turn AMF coil. When the current is 1000A, the maximum value of B-field of radial TMF is 13.95mT, the maximum value of B-field of tangential TMF is 6.61mT, and the maximum value of B-field of AMF is 4.14mT. The maximum value of phase difference is 10.02°. The vacuum arc diffuses and turns between the contacts. The maximum value of vacuum arc voltage is 23.2V.
Keywords :
"Vacuum arcs","Interrupters","Resistance","Current measurement","Contacts","Position measurement","Magnetic fields"
Conference_Titel :
Electric Power Equipment ? Switching Technology (ICEPE-ST), 2015 3rd International Conference on
DOI :
10.1109/ICEPE-ST.2015.7368345
