Specifies a general test procedure for the thermal evaluation and qualification of electrical insulation systems (EIS) and establishes a procedure that compares the performance of a candidate EIS to that of a reference EIS. This basic standard is applica
IEC 61857-1:2004 history
2008IEC 61857-1:2008 Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage
2004IEC 61857-1:2004 Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage
1998IEC 61857-1:1998 Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage