BS EN IEC 60370:2018 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.Cross References:IEC 60216-4-3IEC 60216-4-2IEC 60243-1EN 60455-3-5IEC 60216ISO 2113ISO 2078IEC 60212EN 60216-4-1EN 60641-3-1EN 60464-3-2EN 60216IEC 60464-3-2EN 60243-1IEC 60216-4-1EN 60212EN 60216-4-2EN ISO 2078IEC 60455-3-5IEC 60641-3-1EN 60216-4-3ISO 1144:1973IEC 60464-2ASTM D1932EN 60455-2IEC 60455-2EN 60464-2All current amendments available at time of purchase are included with the purchase of this document.