Presentation 2019-05-17
Influence of ambient gas on arc duration and energy of electromagnetic contactor in AC power supply
Kiyoshi Yoshida, Koichiro Sawa, Kenji Suzuki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Arc discharge at break was generated in the electromagnetic contactor in the air and hydrogen. The arc duration ta, the arc energy Ea, and the contact resistance Rc during the arc discharge were measured. The power supply voltage was set to AC 100 V and the closed contact current Io was set to 10, 20, and 30 A. Experimental results have examined the influence of various characteristics of break arc discharge by ambient gas of air (air) and hydrogen (H2). As a result, in the air, the arc duration ta did not change even if Io increased. On the other hand, in H2, it was confirmed that ta becomes longer as Io is larger. The arc duration time ta was a relation of H2 < Air. From the observation of the contact surface after the experiment, the arc trace which seemed to have arc occurred in the center of contact surface in the air. It became wider when Io was large, and its surroundings were discolored to black. On the other hand, white arc discharge marks were formed on the entire contact surface in hydrogen, and black discoloration was confirmed around the surface. The contact resistance Rc was found to be smaller in hydrogen.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Electromagnetic contactor / Electrical contact / Arc duration / Arc energy / Contact resistance / Sealed gas / hydrogen
Paper # EMD2019-6
Date of Issue 2019-05-10 (EMD)

Conference Information
Committee EMD
Conference Date 2019/5/17(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Cyberscience Center, Tohoku University
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Shinichi Wada(TMC System)
Vice Chair Yoshiki Kayano(Univ. of Electro-Comm.)
Secretary Yoshiki Kayano(Muroran Inst. of Tech.)
Assistant Yuichi Hayashi(NAIST)

Paper Information
Registration To Technical Committee on Electromechanical Devices
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Influence of ambient gas on arc duration and energy of electromagnetic contactor in AC power supply
Sub Title (in English)
Keyword(1) Electromagnetic contactor
Keyword(2) Electrical contact
Keyword(3) Arc duration
Keyword(4) Arc energy
Keyword(5) Contact resistance
Keyword(6) Sealed gas
Keyword(7) hydrogen
1st Author's Name Kiyoshi Yoshida
1st Author's Affiliation Nippon Institute of Technology(NIT)
2nd Author's Name Koichiro Sawa
2nd Author's Affiliation Nippon Institute of Technology(NIT)
3rd Author's Name Kenji Suzuki
3rd Author's Affiliation Fuji Electric FA Components & Systems Co., Ltd(Fuji Electric FA Components & Systems)
Date 2019-05-17
Paper # EMD2019-6
Volume (vol) vol.119
Number (no) EMD-41
Page pp.pp.29-34(EMD),
#Pages 6
Date of Issue 2019-05-10 (EMD)