IEC 61857-21:1998
Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose model - Wire-wound applications

Standard No.

IEC 61857-21:1998

Release Date

1998

Published By

International Electrotechnical Commission (IEC)

Status

Be replaced 2009-05

Replace By

IEC 61857-21:2004

Latest

IEC 61857-21:2009

IEC 61857-21:1998 history

• 2009 IEC 61857-21:2009 Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications
• 2004 IEC 61857-21:2004 Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications
• 1998 IEC 61857-21:1998 Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose model - Wire-wound applications