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IEC 61857-21: Electrical insulation systems – Procedures for thermal evaluation – Part 21: Specific requirements for general-purpose models – Wire-wound applications

Publication Date: May 1, 2009
SDO: IEC: International Electrotechnical Commission
 DOD Adopted   ANSI Approved Approved

This part of IEC 61857 describes a general-purpose model (GPM) and a tall channel alternative model (GPM-TC) which can be used for the evaluation of wire-wound electrical insulation systems (EIS) where specific electrotechnical products are not available or required.

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