ROTATING ELECTRICAL MACHINES - PART 27-4: MEASUREMENT OF INSULATION RESISTANCE AND POLARIZATION INDEX OF WINDING INSULATION OF ROTATING ELECTRICAL MACHINES
International Electrotechnical Committee
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Insulation resistance - components and influence
factors
5 Polarization index
6 Measurement
7 Interpretation of measurement results
8 Recommended limits of insulation resistance and
polarization index
9 Test report
Annex A (informative) - Components of the direct current
Annex B (informative) - Graphical estimation of the slope
parameter X for temperature correction from
measurement data
Annex C (informative) - Examples of test results of synthetic
resin based high voltage windings
Annex D (informative) - Measurement of leakage current to
assess interphase insulation resistance
Annex E (informative) - Other DC tests
Bibliography
Gives recommended test procedures for the measurement of insulation resistance and polarization index of stator and rotor winding insulation of rotating electrical machines.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 2 |
