Cross References:IEC 60068-2-1:2007EN 60068-2-1:2007IEC 60068-2-20:2008EN 60068-2-20:2008IEC 60068-2-21:2006EN 60068-2-21:2006IEC 61000-4-5:2005EN 61000-4-5:2006ITU-T Recommendation K.20IEC 60364-5-51:2005IEC 61180-1:1992IEC 61643-312IEEE C62.45:2002DIN VDE 0845-1:1987IEC 60721-3-3:2002IEEE C62.31:2006ITU-T Recommendation K.12RUS Bulletin 345-83:1979IEC 61643-11:2011IEC 61643-21:2009Replaces BS EN 61643-311:2001 which remains current.All current amendments available at time of purchase are included with the purchase of this document.