EN 61857-21:2009
Current
Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications
07-10-2009
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Construction
5 Number of test objects
6 Test procedures
7 End-of-life criterion
8 Analyzing, reporting and classification
Annex ZA (normative) - Normative references to international
publications with their corresponding European
publications
Bibliography
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.
| Committee |
CLC/SR 112
|
| DevelopmentNote |
Supersedes EN 61857-23. (12/2004)
|
| DocumentType |
Standard
|
| PublisherName |
European Committee for Standards - Electrical
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| I.S. EN 61857-21:2009 | Identical |
| CEI EN 61857-21 : 2012 | Identical |
| PN EN 61857-21 : 2009 | Identical |
| BS EN 61857-21:2009 | Identical |
| NEN EN IEC 61857-21 : 2009 | Identical |
| VDE 0302-21:2010-02 | Identical |
| DIN EN 61857-21:2010-02 | Identical |
| IEC 61857-21:2009 | Identical |
| NF EN 61857-21 : 2009 | Identical |
| NBN EN 61857-21 : 2009 | Identical |
| BS EN 61169-11:2017 | Identical |
| UNE-EN 61857-21:2009 | Identical |