Non-Arcing Circuit Breaking Phenomena in Electrical Contacts due to Dark Bridge

Hiroyuki ISHIDA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E103-C   No.5   pp.238-245
Publication Date: 2020/05/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.2019ECP5028
Type of Manuscript: PAPER
Category: Electromechanical Devices and Components
Keyword: 
electrical contacts,  dark bridge,  non-arcing circuit breaking phenomena,  

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Summary: 
In this paper, experimental data of non-arcing circuit breaking phenomena in electrical contacts are presented. A dark bridge that is a non-luminous bridge between electrical contacts is an effective factor for the non-arcing circuit break. A facility of a cantilever system was established to precisely control a position of an electrode. By using this facility, dark bridges between contacts were made and the dark bridges were observed by a microscopic camera system.