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IEC 61857-21:2009 ED3

Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications IEC 61857-21:2009 ED3

Publication date:   May 13, 2009

General information

60.60 Standard published   May 13, 2009

IEC

TC 112

International Standard

29.080.30   Insulation systems

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Scope

IEC 61857-21:2009 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. The third edition cancels and replaces the second edition published in 2004, and constitutes editorial revisions to make this standard compatible with Parts 1 and 22.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC 61857-21:2004 ED2

NOW

PUBLISHED
IEC 61857-21:2009 ED3
60.60 Standard published
May 13, 2009