Test Categories for Characterization of Sliding Electrical Contacts

Holzapfel, C.

doi:10.1109/holm.2019.8923978

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Occasionally, monitoring of the coefficient of friction during the test is also carried out. For this purpose, Holzapfel [4] used a slip ring with an instrumented wire/ring contact. This setup allows to follow the contact resistance, thanks to a 4-probes method, during the test, in parallel with the friction force.…”

Section: Introductionmentioning

confidence: 99%

Electrical and tribological behaviour of gold/gold sliding contacts of the wire/ring type for slip ring applications

Ferreira,

Brézard-Oudot,

Isard

et al. 2023

2023 IEEE 68th Holm Conference on Electrical Contacts (HOLM)

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Many industrial systems require the transmission of electrical current from a static part to a rotating one. This is achieved by a sliding contact within a slip ring device. These devices usually have to be fully operative for many years. Understanding the wear mechanism and the electrical behaviour are of major interest. In order to study the triboelectrical behaviour of sliding contacts of the wire/ring type, a rotating ball-on-disc tribometer (Anton Paar TRB 3 ) has been used. The friction of a wire on a ring is reproduced by the friction of a wire on a disc thanks to a special wire holder. The gold alloy wire is the same as in the real slip ring device and the brass disc has the same gold alloy plating as in real slip rings. Voltage drop through the interface is measured with the 4probes method. This set-up allows to study the influence of various parameters such as rotating speed, current value, normal force, lubrication conditions, and more. In this paper, the new experimental setup, and the first results obtained during its implementation are presented.

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Section: Introductionmentioning

confidence: 99%