NDLI: Effect of Dust Contamination on Electrical Contact Failure

Content Provider	IEEE Xplore Digital Library
Author	Ji Gao Zhang
Copyright Year	2007
Description	Author affiliation: Lab. of Electr. Contacts, Beijing Posts & Telecommun. Univ., Beijing (Ji Gao Zhang)
Abstract	Dust contamination is a major cause of current disruption in electric contacts. It is fast becoming the greatest influence on their reliability. However, due to its complexity, the effect of dust is difficult to simulate in the laboratory; and effective ways to reduce the failure caused by the fine dust particles on contacts still present a difficult and unsolved research problem. Based on the inspection of failed electric contacts, and also on the study of the characteristics of dust particles, this paper describes the composition of the materials in dust, and also the mechanical, electrical, and chemical characteristics of the particles. The conditions required for the dust to cause contact failure are discussed: in particular the effect of micro motion at the contact interface; the selective deposition of dust particles; the adhesion between particles; the chemical and electrostatic attachment of particles to the contact surface; and the creation of high resistance due to particle accumulation.
File Size	11409942
File Format	PDF
ISBN	1424408377
DOI	10.1109/HOLM.2007.4318186
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface resistance Contact resistance Surface contamination Chemicals Adhesives Mobile handsets Inspection Composite materials Electric resistance Testing adhesion dust particles micro movement corrosion products
Content Type	Text
Resource Type	Article

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