IEC 61189-6:2006-Test methods for electrical materials, IEC TR 60725:2012-Consideration of reference impedances and public supply network impedances for use in determining the disturbance characteristics of electrical equipment having a rated current ?75 A per phase, IEC 61326-2-6:2012-Electrical equipment for measurement, IEC 60364-7-709:2007/AMD1… Read More