Problems of Interaction of Contact wire and Current Collectors of Electric Transport with Different Contact Materials
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Date
2019
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Technical University, Sofia, Bulgaria
Abstract
EN: The reliability of the current transfer process depends on the reliable sliding contact
between the current collector and the contact wire; the value of the resistance of the contact
element of the current collector; the value of the contact wire’s contact and the contact element.
Graphite inserts for operation on electric transport of railways of alternating current operate at
low values of current, on electric trains of a direct and an alternating current at high speeds, and
on electric locomotives of a direct current at large values of a current. They are good lubricate
the contact wire, but have a high resistivity and are rapidly mechanically erased. Copper and
metal-ceramic lining have relatively less resistance, but due to the high hardness of the material,
they quickly wipe off themselves and the contact wire. When using all materials in open and
closed mines, dust and dirt on contact plates, high temperature and the presence of gas, which is
dangerous when the spark is in contact, must be considered additionally. It is proposed to use the
new contact material of BRZG from bronze, graphite and iron. The effectiveness of this material
is confirmed by the operation of electric locomotives and electric trains of direct and alternating
current on railways and trolleybuses.
Description
M. Babyak: ORCID 0000-0001-5125-9133
Keywords
contact wire, electric transport, different contact materials, КТТ (ЛФ)
Citation
Babyak, M. Problems of Interaction of Contact wire and Current Collectors of Electric Transport with Different Contact Materials. BulTrans-2019 : Conference Proceedings, Sozopol, 10–12 September 2019. Sozopol, 2019. С. 97–105.