IEC 61857-21:2009
Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications
- Standard No.
- IEC 61857-21:2009
- Release Date
- 2009
- Published By
- International Electrotechnical Commission (IEC)
- Latest
- IEC 61857-21:2009
- Replace
- IEC 112/120/FDIS:2009 IEC 61857-21:2004
- Scope
- 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.
IEC 61857-21:2009 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
