IEC 61857-32 Ed. 1.0 b:2019
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Electrical insulation systems – Procedures for thermal evaluation – Part 32: Multifactor evaluation with increased factors during diagnostic testing
International Electrotechnical Commission , 10/14/2019
Pages: 33
IEC 61857-32:2019 series is focused on applications where other possible factors need to be incorporated to evaluate any influence on the performance of the electrical insulation system (EIS). Multi-factor evaluation is the most complex type of project to design and conduct. Clear guidelines are needed to give the user of this document a uniform approach and a method to analyse the test results.
This document is for applications where the stresses are some combination of other factors of influence identified in IEC 60505. The multi-factor stresses are applied during the diagnostic portion of each test cycle.
A few examples of other factors of influence or multi-factor stresses are:
- high vibration;
- submersion in oils, water, or solutions;
- voltage higher than the test voltage of the reference EIS;
- decreased cold shock temperature.
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