IEC 60370:2017
Test procedure for thermal endurance of insulating resins and varnishes for impregnation purposes - Electric breakdown methods

Standard No.

IEC 60370:2017

Release Date

2017

Published By

International Electrotechnical Commission (IEC)

Latest

IEC 60370:2017

Scope

This International Standard covers methods of test for the determination of thermal endurance (temperature index) of electrical insulating resins and varnishes for impregnation purposes. It is done by means of impregnating glass cloth and measuring electric strength or breakdown voltage before and after heat ageing. It covers the materials described in IEC 60455-3-5 and IEC 60464-3-2 and similar materials.

IEC 60370:2017 history

• 2017 IEC 60370:2017 Test procedure for thermal endurance of insulating resins and varnishes for impregnation purposes - Electric breakdown methods
• 1971 IEC 60370:1971 Test procedure for thermal endurance of insulating varnishes - Electric strength method