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Reference IEC/TS 61251 ed2.0 withdrawn corrigendum
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Title Electrical insulating materials - A.C. voltage endurance evaluation - Introduction
Publication date 2008-05-14
Format, price
(Swiss francs)
and language
100.- 19 pages
100.- 936 Kb
Abstract IEC/TS 61251:2008(E) explains many of the factors involved in voltage endurance tests on electrical insulating materials and systems. It describes the voltage endurance graph, lists test methods illustrating their limitations and gives guidance for evaluating the a.c. voltage endurance of insulating materials and systems from the results of the tests. The terminology to be used in voltage endurance is defined and explained. It should be emphasized that where this technical specification is concerned with materials, the results may not be directly applicable to the performance of insulating systems. Voltage endurance tests are used to compare and evaluate insulating materials with regard to their various applications in electrical systems. Determining the ability of electrical insulating materials and systems to endure a.c. voltage stress is complex. The results of voltage endurance tests are influenced by many factors so this technical specification should only be considered as an attempt to present a unified view of voltage endurance for simplified planning and analysis. Some documents for the various practical cases exist and others are being developed. The main changes with respect to the previous edition are listed below:
- extension of the scope to cover electrical insulating material and insulation systems;
- removal of references to short time dielectric breakdown strength measurements as an indicator of voltage endurance.
Technical Committee 112 - Evaluation and qualification of electrical insulating materials and systems  RSS
ICS Codes
29.035.01 Insulating materials in general

17.220.99 Other standards related to electricity and magnetism
Replaced by
Stability date 2016
Work in progress
ProjectStage codeForecast publication date
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