Investigation on contact surfaces damage of copper contacts by an electric arc

• Autorzy: Hadda Kada , Beloufa Amine , Amirat Mohamed , Boutte Aissa

Identyfikatory

DOI

10.24425/ame.2024.149638

• Języki publikacji: EN

Abstrakty

EN

Electrical contacts are used in general electrical applications such as circuit breakers, switches, relays, connectors, etc. Repeated separations of the parts (anode and cathode) of these contacts under input power can damage their contact materials. The objective of this work is to study the influence of the input electric power (100 W and 256 W) and the contact sizes (hemispherical contacts with diameters 𝐷 = 5 mm and 𝐷 = 8 mm) on the variation of the arc energy and the damage of the contact surfaces by oxidization or by erosion. These parameters are decisive for selecting the best arcresistant contact sample. Experimental results, SEM, and EDX analysis show that high input power leads to more degradation of contact surfaces. Also, the smaller and the larger contact diameters generate similar arcing energies with similar erosion sizes and oxidation rates, but the contact with a small diameter has a higher lifetime (1215 operations) and oxidizes less quickly than the one with a large diameter that has a lower lifetime (374 operations). Experimental and numerical analyses demonstrat that arc mobility is one of several factors influencing the change in contact lifetime.

Słowa kluczowe

EN

automotive electrical connector; pure copper; electric arc; connector damage; experimental tests; contact surfaces analysis by SEM and EDX

PL

samochodowe złącze elektryczne; czysta miedź; łuk elektryczny; uszkodzenie złącza; test eksperymentalny; analiza powierzchni styku metodą SEM i EDX

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2024
• Tom: LXXI, nr 2
• Strony: 251–--271
• Opis fizyczny: Bibliogr. 36 poz., rys., tab.

Twórcy

autor

Hadda Kada

• Algerian Space Agency-Satellite Development Center Bir El Djir, Oran, Algeria
• Smart Structure Laboratory, University of Ain Temouchent, Ain Temouchent, Algeria

• https://orcid.org/0009-0007-9167-8958

autor

Beloufa Amine

• Smart Structure Laboratory, University of Ain Temouchent, Ain Temouchent, Algeria

• https://orcid.org/0000-0002-9582-7937

autor

Amirat Mohamed

• Smart Structure Laboratory, University of Ain Temouchent, Ain Temouchent, Algeria

• https://orcid.org/0000-0002-3294-6613

autor

Boutte Aissa

• Algerian Space Agency-Satellite Development Center Bir El Djir, Oran, Algeria

• https://orcid.org/0000-0002-5444-8666

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).