1 Scope
This standard specifies the test method and limited value of the loss factor of single stator coil (bar) for the rotating motor.
This standard is applicable to Grade B and F insulation loss measuring test for the stator coil (bar) of the synchronous generator, synchronous compensator and AC electric motor with rated voltage of 6kV or above.
This standard is not applicable to the unsolidified coil (bar).
2 Normative References
The following standard contains provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigenda), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document applies.
Foreword I
1 Scope 1
2 Normative References 1
3 Test 1
4 Limited Value of Loss Factor (tanδ) and Its Increment (Δtanδ) 5
Appendix A (Normative) Measuring Electrode and Shielding Electrode 6
Appendix B (Normative) Hot State Loss Factor Measuring Test 7
