Gives requirements on the design, construction, testing and marking of electrical apparatus for use in combustible dust atmospheres in which a protective gas (air or inert gas), maintained at a pressure above that of the external atmosphere, is used to prevent the entry of dust which might otherwise lead to the formation of a combustible mixture within enclosures which do not contain a source of combustible dust.
WITHDRAWN
IEC 61241-4:2001 ED1
99.60
Withdrawal effective
Jul 21, 2014
PUBLISHED
IEC 60079-2:2014 ED6