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Study on a New Single Coil-Type Axial Magnetic Field Contact for High-Voltage Vacuum Interrupters

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4 Author(s)
Shaoyong Cheng ; Dept. of Electr. Eng., Xi''an Jiaotong Univ., Shanxi ; Shixin Xiu ; Liu, Zhiyuan ; Jimei Wang

A new single coil-type axial magnetic field (AMF) contact for high-voltage vacuum interrupters is introduced. Its AMF characteristics were studied by a finite element method, taking the eddy current effect into account. Vacuum arc appearance of the new single coil-type AMF contact was observed by a high-speed charge-coupled device video camera. Capacitors and reactors (LC) discharging current interruption tests up to 45.0 kA were done with a single frequency LC oscillating circuit. Vacuum arc appearance of the single coil-type and slot-type AMF contacts was compared. The research results show that the new single coil-type AMF contact is more suitable for high-voltage vacuum interrupters than the slot-type AMF one

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Plasma Science, IEEE Transactions on  (Volume:35 ,  Issue: 2 )