Cover IEC 61857-32:2019

IEC 61857-32:2019

Electrical insulation systems - Procedures for thermal evaluation - Part 32: Multifactor evaluation with increased factors during diagnostic testing

Circulation Date: 2019-10
Edition: 1.0
Language: EN-FR - bilingual english/french
Seitenzahl: 33 VDE Artno.: 248150


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:
Í high vibration;
Í submersion in oils, water, or solutions;
Í voltage higher than the test voltage of the reference EIS;
Í decreased cold shock temperature.