Title :
Arc immobility and erosion phenomena in low pressure air
Author :
Li-Chun, Cheng ; Bu-Yun, Wang
Author_Institution :
Dept. of Electr. Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
By using an experimental model of switching contacts in a demountable arc chamber, the initial immobility, edge immobility, and electrode erosion of switching arcs under a condition of low atmospheric pressure of 0.1 to 0.048 MPa in air (corresponding to the atmospheric pressure range of 0-6 km above sea level) were experimentally investigated. The results show that when the atmospheric pressure is reduced the initial immobility time of the arc increases, arc immobility time at the edge of contacts increases and arc erosion of contacts increases
Keywords :
air; circuit-breaking arcs; 0.1 to 0.048 MPa; arc erosion of contacts increases; arc erosion phenomena; arc immobility; arc immobility time; demountable arc chamber; electrode erosion; experimental model; initial immobility time; low atmospheric pressure; low pressure air; magnetically driven arcs; switching arcs; switching contacts; Contacts; Electrodes; Magnetic fields; Magnetic separation; Rough surfaces; Sea level; Sea surface; Surface roughness; Switches; Testing;
Conference_Titel :
Electrical Contacts, 1990. Proceedings of the Thirty-Sixth IEEE Holm Conference on ... and the Fifteenth International Conference on Electrical Contacts
Conference_Location :
Montreal, Que.
DOI :
10.1109/HOLM.1990.113059
