Cross References:IEC 60870-6-702:2014IEC 60870-6-802:2014IEC 61970-452:2013IEC 61970-552:2013IEC/TS 62351-4:2007ISO 9506-1:2003ISO 9506-2:2003EN 60870-6-702:2014EN 60870-6-802:2014EN 61970-452:2013EN 61970-552:2014All current amendments available at time of purchase are included with the purchase of this document.