Presentation 2000/12/8
An Effect of Ambient Gas on the Contact Voltage Drop
Takahiro UENO, Koichiro SAWA,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The surface film of slip-ring is important to sliding contact phenomena. The surface film is changed by atmospheric temperature, humidity and air pressure. The sliding phenomena in air and vacuum conditions are different. In this experiment, we examined the contact voltage drop fluctuation for continuous sliding when the atmosphere is changed from the low pressure to air pressure. As a result, the contact voltage drop increase rapidly with increasing gas pressure, also its fluctuation becomes large. When the gas pressure decreases again, the contact voltage drop does not suffer from the effect of ambient gas. Therefore, the contact voltage drop only due to the film resistance is observed.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) sliding contact / brush / oxidized film / carbon film / contact voltage drop
Paper # EMD2000-80
Date of Issue

Conference Information
Committee EMD
Conference Date 2000/12/8(1days)
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Paper Information
Registration To Electromechanical Devices (EMD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Effect of Ambient Gas on the Contact Voltage Drop
Sub Title (in English)
Keyword(1) sliding contact
Keyword(2) brush
Keyword(3) oxidized film
Keyword(4) carbon film
Keyword(5) contact voltage drop
1st Author's Name Takahiro UENO
1st Author's Affiliation Faculty of Engineering, Nippon Institute of Technology()
2nd Author's Name Koichiro SAWA
2nd Author's Affiliation Faculty of Engineering, Nippon Institute of Technology
Date 2000/12/8
Paper # EMD2000-80
Volume (vol) vol.100
Number (no) 511
Page pp.pp.-
#Pages 4
Date of Issue