I.S. EN 61857-1:2009
Current
The latest, up-to-date edition.
ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 1: GENERAL REQUIREMENTS - LOW-VOLTAGE
Hardcopy , PDF
English
01-01-2009
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
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FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General information
4.1 Overview of test procedure
4.2 Basis of evaluation and qualification
4.3 Specific requirements
5 Test objects
5.1 General
5.2 Description
5.3 Number of test objects
6 Test procedures
6.1 General
6.2 Initial screening tests
6.3 Thermal ageing
6.4 Prediagnostic mechanical stress
6.5 Other prediagnostic conditioning
6.6 Moisture exposure
6.7 Dielectric diagnostic tests
6.8 Other diagnostic tests
7 Analyzing, reporting and classification
7.1 End-point criterion
7.2 Method of determining life
7.3 Extrapolation of data
7.4 Report of results
Bibliography
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
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