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Yang L.,Tianjin Pinggao Intelligent Electrical Co. | Li M.,Tianjin Pinggao Intelligent Electrical Co. | Wang X.,Tianjin Pinggao Intelligent Electrical Co. | Sun S.,Tianjin Pinggao Intelligent Electrical Co. | Li W.,Tianjin Pinggao Intelligent Electrical Co.
Gaoya Dianqi/High Voltage Apparatus | Year: 2015

The magnetic flux density and electromagnetic force of different structures of transverse magnetic field (TMF)contacts are analyzed by using simulation method, and the effects of the contact structure on magnetic flux density and electromagnetic force are obtained. The results show that; 1)the maximum value of magnetic flux density of the 16-turn TMF contact is 49.21 mT, the 4-turn TMF contact 63.86 mT, and the screw slotted TMF contact 74.54 mT; 2)the arc model's electromagnetic force of 16-turn TMF contact is 0.042 1 N, the 4-turn TMF contact 0.063 6 N, and the screw slotted TMF contact 0.117 6 N. ©, 2015, Xi'an High Voltage Apparatus Research Institute. All right reserved. Source


Li M.,Tianjin Pinggao Intelligent Electrical Co. | Wang X.,Tianjin Pinggao Intelligent Electrical Co. | Li W.,Tianjin Pinggao Intelligent Electrical Co. | Sun S.,Tianjin Pinggao Intelligent Electrical Co.
2015 3rd International Conference on Electric Power Equipment - Switching Technology, ICEPE-ST 2015 | Year: 2015

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. © 2015 IEEE. Source

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