Rotating electrical machines - Part 18: Functional evaluation of insulation systems - Section 31: Test procedures for form-wound windings - Thermal evaluation and classification of insulation systems used in machines up to and including 50 MVA and 15 kV
This section of IEC 34-18 gives test procedures for the thermal evaluation and classification of insulation systems used or proposed for use in a.c. or d.c. rotating electrical machines up to and including 50 MVA and 15 kV using form-wound windings. The test procedures are comparative in that the performance of a candidate insulation system is compared to that of a reference insulation system with proven service experience.