Specifies the construction and testing of intrinsically safe apparatus, meant for use in potentially explosive atmospheres and for associated apparatus, which is meant for connection to intrinsically safe circuits which enter such atmospheres. Coverage includes: documentation, marking, and diode safety barriers. Also gives detailed definitions and annexes.

? British Standards Institution 2013

Amendment notes:
AMD 15956 published 31 July 2006
AMD 15956 is a Corrigendum

BS 1259(1958) : 1958

BS 5501-7(1977) : 1977

BS 5501-1(1977) : 1977

BS 5501-7:1977

BS EN 50020:1995

BS 5501-1:1977

BS 1259:1958

BS EN 60079-11 : 2012

BS EN 60079-11:2007

SS EN 50020 Ed. 5 (2002) - Identical

UNE EN 50020 : 2003 - Identical

DIN EN 50020 : 2003 - Identical

NF EN 50020 : 2004 - Identical

EN 50020 : 2002 - Identical

I.S. EN 50020:2002 - Identical

NBN EN 50020:2003 - Identical

NF EN 50020:2004 - Identical

UNE EN 50020:2003 - Identical

NEN EN 50020 : 2002 - Identical

UNE EN 50020 : 2003 - Identical

DIN EN 50020 : 2003 - Identical

I.S. EN 50020:2002 - Identical

NBN EN 50020 : 2003 - Identical

NF EN 50020 : 2004 - Identical

SN EN 50020 : 2002 - Identical

NBN EN 50020 : 2003 - Identical

NEN EN 50020 : 2002 - Identical

SN EN 50020 : 2002 - Identical

DIN EN 50020:2003 - Identical

SN EN 50020:2002 - Identical

NEN EN 50020:2002 - Identical

DIN EN 50020 (2003-08) - Identical

I.S. EN 50020:2002 - Identical