BS EN 61857-1:2005

This standard BS EN 61857-1:2005 Electrical insulation systems. Procedures for thermal evaluation is classified in these ICS categories:

• 29.080.30 Insulation systems

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 applicable to existing or proposed EIS used in electrotechnical products with an input voltage of up to 1 000 V where the thermal factor is the dominating ageing factor. This second edition cancels and replaces the first edition published in 1998, and constitutes a technical revision to make this basic standard compatible with parts 21 and 22.