IEC TR 61857-2:2015 Published

electrical wires photo

The International Electrotechnical Commission has released a new edition of IEC TR 61857-2:2015.

IEC TR 61857-2:2015 ed. 1.0 applies to “Electrical insulation systems – Procedures for thermal evaluation – Part 2: Selection of the appropriate test method for evaluation and classification of electrical insulation systems.” The new edition is available for purchase on the IEC’s website.


“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.”

*Description from IEC website

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