Presentation 2019-03-01
Influence of ambient gas on various characteristics of break arc for electromagnetic contactor with AC power supply
Igarashi Takahiro, Kumagai Fuuma, Kiyoshi Yoshida, Koichiro Sawa,
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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 atmosphere 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, 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 atmosphere. 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 / Atmospheric pressure
Paper # EMD2018-68
Date of Issue 2019-02-22 (EMD)

Conference Information
Committee EMD
Conference Date 2019/3/1(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
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 various characteristics of break arc for electromagnetic contactor with 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) Atmospheric pressure
1st Author's Name Igarashi Takahiro
1st Author's Affiliation Nippon Institute of Technology(NIT)
2nd Author's Name Kumagai Fuuma
2nd Author's Affiliation Nippon Institute of Technology(NIT)
3rd Author's Name Kiyoshi Yoshida
3rd Author's Affiliation Nippon Institute of Technology(NIT)
4th Author's Name Koichiro Sawa
4th Author's Affiliation Nippon Institute of Technology(NIT)
Date 2019-03-01
Paper # EMD2018-68
Volume (vol) vol.118
Number (no) EMD-462
Page pp.pp.47-52(EMD),
#Pages 6
Date of Issue 2019-02-22 (EMD)