This part of IEC 61857 specifies a general test procedure for the termal 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.
The 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.
DIN EN 61857-1 VDE 0302-11:2005-09
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