Encyclopedia
Electric arc
Electric arc: an electric discharge in a gaseous medium between contacts occurring when disconnecting an electrical contact or due to instability in the transition resistance of contacts (sparking)
(Source: "GOST R 12.1.019-2009. National Standard of the Russian Federation. Occupational Safety Standards System. Electrical Safety. General Requirements and Classification of Protection Types")
(approved and introduced into force by Order of Rosstandart dated December 10, 2009 No. 681-st)