IEC 61858 pdf – Electrical insulation systems – Thermal evaluation of modifications to an established wire-wound EIS

IEC 61858 pdf – Electrical insulation systems – Thermal evaluation of modifications to an established wire-wound EIS 1 scope This International Standard lists the required test procedures for qualification of modificationsof an established electrical insulation system (EIS) with respect to its thermal classification.This standard is applicable to EIs used in wire-wound electrotechnical devices. The testprocedures are comparative in that the...