BS EN 61857-22:2008
Current
The latest, up-to-date edition.
Electrical insulation systems. Procedures for thermal evaluation Specific requirements for encapsulated-coil model. Wire-wound electrical insulation system (EIS)
Hardcopy , PDF
English
03-31-2009
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Construction
4.1 General information
4.2 ECM components
4.3 Assembly of the ECM
4.4 Similarity of reference and candidate ECM
5 Number of test objects
6 Test procedure
6.1 General
6.2 Initial screening test
6.2.1 General
6.2.2 Initial dielectric test
6.3 Thermal endurance test
6.3.1 Endurance test cycle
6.3.2 Thermal ageing
6.3.3 Mechanical stress
6.3.4 Thermal shock
6.3.5 Moisture exposure
6.3.6 Dielectric diagnostic test
7 End-of-life criterion
8 Analysing, reporting and classification
Annex A (informative) - Similarity of reference and candidate
specimens
Bibliography
Annex ZA (normative) - Normative references to international
publications with their corresponding European
publications
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