Free ASTM Standards Download

IEC 60071-1-2011 pdf free.Insulation co-ordination - Part 1: Definitions, principles and rules. This part of IEC 60071 applies to three-phase a.c. systems having a highest voltage for equipment above 1 kV. It specifies the procedure for the...

IEC 60071-1-2019 pdf free.Insulation co-ordination - Part 1: Definitions, principles and rules. This part of IEC 60071 applies to three-phase AC systems having a highest voltage for equipment above 1 kV. It specifies the procedure for the...