Wear Modes of Contact Wire and Contact Strip under Electric Current Condition

To suggest measures for reducing wear of current collecting materials such as contact wires and contact strips, it is necessary to understand actual phenomena generated at the point of electric contact. For this study on classification of wear modes and transition conditions between hard drawn coppe...

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Bibliographic Details
Published inQuarterly Report of RTRI Vol. 55; no. 2; pp. 67 - 72
Main Authors YAMASHITA, Chikara, SUGAHARA, Atsushi
Format Journal Article
LanguageEnglish
Published Tokyo Railway Technical Research Institute 2014
Japan Science and Technology Agency
Subjects
Classification
Contact
contact strip
contact temperature
contact wire
Electric contacts
Electric current
Electric wire
linear wear test
melting point
Strip
Ultrasonic testing
Wear
wear mode
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Summary:To suggest measures for reducing wear of current collecting materials such as contact wires and contact strips, it is necessary to understand actual phenomena generated at the point of electric contact. For this study on classification of wear modes and transition conditions between hard drawn copper contact wire and iron-based sintered alloy contact strips, a linear wear testing method was newly introduced. As a result, it was found that the contact temperature which was estimated from the contact voltage depended on electric current and contact load. Consequently it was possible to classify wear modes of the current collecting materials under electric current conditions into three types depending on the maximum contact temperature.
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:0033-9008
1880-1765
DOI:10.2219/rtriqr.55.67