IS 13508 : 1992 Test Procedure for Measurement of Loss Tangent Angle of Coils and Bars for Machine Winding - Guide

1 Scope

1.1 This Guide is applicable to a method of measuring dielectricloss properties of the insulation system of the slot portions ofnew coils or bars for rotating electrical machines having ratedvoltage UN of 5 kV and above.

1.2 This Guide is applicable to form wound coils or bars inwhich the insulation is cured before the winding is inserted in thestator.

1.3 This Guide also recommends in Annex A the test procedure ofloss tangent on post impregnated machines but the evaluationcriteria in not covered in this Guide.

2 References

IS 2071 : Part 2 :1976 Methods of high voltage testing:Part 2 Test procedure

IS 2260 :1973Preconditioning and testing of solidelectrical insulating materials