FAQs
SS 404-1:1997 [Withdrawn]
SS 404-2:1997 [Withdrawn]
SS 404-3 : 1:1998 [Withdrawn]
SS 404-3:2001 [Withdrawn]
SS 404-5:2001 [Withdrawn]
SS 404-8:2000 [Withdrawn]
SS 516:2005 [Current]
IEC 60050-421:1990 [Current]
IEC 60076-1:2011 [Current]
IEC 60076-10:2016 [Current]