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EN 61857-21:2009

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

Publication date:   Oct 30, 2009

General information

60.60 Standard published   Jul 10, 2009

CENELEC

CLC/SR 112 Evaluation and qualification of electrical insulating materials and systems (to be defined)

European Norm

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.

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PREVIOUSLY

WITHDRAWN
EN 61857-21:2004

NOW

PUBLISHED
EN 61857-21:2009
60.60 Standard published
Jul 10, 2009