
Insulation co-ordination. Definitions, principles and rules
出版:British Standards Institution

專家解讀視頻
This part of IEC 60071 applies to three-phase AC systems having a highest voltage for equipment above 1 kV.
EN IEC 60071-1:2019 - Identical
IEC 60071-1 : 2019 - Identical
IEC 60071-1 : 2019 - Identical