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Polarization Index Test

Polarization Index Test is the variation of insulation resistance. It is the ratio of insulation resistance after ten min to the insulation resistance after one minute. In polarization index test leakage current is measured by applying a direct voltage between the windings and the equipment or machine. The Polarization Index (PI) readings are noted for the equipments, normal Polarization Index value indicates good insulation. Too high or low values indicate that the machine is contaminated and hence the insulation has to be cleaned.

We are one of the well known company in India for providing wide range of services for testing various equipments like Turbines, Generators, HV Motors, Transformers, Switchgear, Surge Arrestors, Power Cables, HV Bushings, CTs, CVTs, etc. in Power, Distribution, Industry Sectors and also Refineries. Polarization index testing is widely used for testing the level of insulation in various machineries and equipments. This test helps in determining whether the insulation is clean and free from moisture.