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IEC TR 61857-2:2015

Superseded Date published:

Warning: Superseded Standard. This document has been replaced by:

IEC TR 61857-2:2025

Electrical insulation systems - Procedures for thermal evaluation - Part 2: Selection of the appropriate test method for evaluation and classification of electrical insulation systems

IEC TR 61857-2:2015(E) gives guidelines to identify the appropriate test method to be used for the evaluation of a proposed Electrical Insulation System (EIS). Some of the standards are for evaluation and classification of the EIS, while other standards identify the appropriate method to evaluate single or multi-factor stresses of a proposed or of an established EIS. This Technical Report is applicable to existing or proposed EIS used in electrotechnical products across a wide range of operating voltages of IEC Standards. The report takes care to select the appropriate standard based on construction and intended operating conditions.

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Related Information

Similar Standards

  • BS EN 60034-18-21:2013

    Rotating electrical machines, Functional evaluation of insulation systems. Test procedures for wire-wound windings. Thermal evaluation and classification

  • BS EN 60034-18-22:2001

    Rotating electrical machines. Functional evaluation of insulation systems, Test procedures for wire-wound windings. Classification of changes and insulation component substitutions

  • BS EN 60034-18-31:2012

    Rotating electrical machines, Functional evaluation of insulation systems. Test procedures for form-wound windings. Thermal evaluation and classification of insulation systems used in rotating machines

  • BS EN 60034-18-34:2012

    Rotating electrical machines, Functional evaluation of insulation systems. Test procedures for form-wound windings. Evaluation of thermomechanical endurance of insulation systems

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IEC TR 61857-2:2015

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