Electrical contact temperature change after short-circuit current

• Autorzy: Książkiewicz A. , Janiszewski J.
• Konferencja: Computer Applications in Electrical Engineering 2014 (28-29.04.2014; Poznań, Polska)
• Języki publikacji: EN

Abstrakty

EN

Theoretical analysis is preformed concerning temperature rise of electrical contacts exposed to short-circuit current. This temperature is calculated for three different contact materials: AgNi, AgCdO and AgSnO₂, used in low voltage electromagnetic relays. An assumption is made that the heat process is adiabatic. Amount of heat is calculated based on let-through energy (Joules heat) of miniature circuit breaker and on real electrical contact resistance. A simplified model of electrical contact heating is proposed.

Słowa kluczowe

EN

contact materials; contact resistance; Joule's heat

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Poznan University of Technology Academic Journals. Electrical Engineering
• Rocznik: 2014
• Tom: No. 78
• Strony: 65--70
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Książkiewicz A.

• Poznan University of Technology

autor

Janiszewski J.

• Poznan University of Technology

Bibliografia

• [1] Au A., Maksymiuk J., Pochanke Z., Podstawy obliczeń aparatów elektroenergetycznych, WNT, Warszawa, 1976 (in Polish).
• [2] Ciok Z., Procesy łączeniowe w układach elektroenergetycznych, WNT, Warszawa, 1983 (in Polish).
• [3] Braunovic M., Konchits V., Myshkin N., Electrical Contacts. Fundamentals, Applications and Technology, CRC Press, 2007.
• [4] Greenwood J. A., Constriction resistance and the real area of contact, Volume 17, Issue 12, 1966, p. 1621-1632.
• [5] Timsit, R.S., Electrical conduction through small contact spots, Proceedings of the 50th IEEE Holm Conference on Electrical Contacts and the 22nd International Conference on Electrical Contacts Electrical Contacts, 2004, p. 184-191.
• [6] Książkiewicz A., Batura R., Thermal and electrodynamic characteristics of electrical contacts in steady state, Computer Applications in Electrical Engineering, 2013, p. 137-142.
• [7] Li Zhenbiao, Cheng Lichun, Zou Jiyan, The metallurgical research on contact surface deterioration of AgNi, AgW, AgFe, AgCu contact materials, Proceedings of the Forty-First IEEE Holm Conference on Electrical Contacts, 1995, p. 346-349.