IEC 60034-27-4:2018 PDF (Not Available)

IEC 60034-27-4:2018 is a standard that outlines the measurement procedures for insulation resistance and polarization index of winding insulation in rotating electrical machines. It specifies the recommended test methods and provides guidance on acceptable minimum values for insulation resistance and polarization index. This standard applies to both stator and rotor winding insulation in fully processed AC and DC rotating electrical machines with a rated power of 750 W or above.

The purpose of measuring insulation resistance is to assess the overall condition of the winding insulation, while the polarization index measurement helps to evaluate the degree of moisture absorption and deterioration of the insulation. By conducting these tests, it is possible to detect potential insulation failures or weaknesses, which can lead to breakdowns or reduced machine performance.

This standard serves as a reference for manufacturers, maintenance personnel, and users of rotating electrical machines to ensure that the insulation resistance and polarization index values meet the specified criteria. Adhering to the guidelines outlined in IEC 60034-27-4:2018 helps to ensure the safe and reliable operation of rotating electrical machines.