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Polarization index (PI) test on Insulators

ByPranali N

All Electric Insulations are dielectric in Nature and have a Capacitive Property. During application of Voltage across the Electrical Insulation, initially there will be a charging current After few instants, the Insulation becomes totally charged and the Capacitive Chrging Current becomes zero. Hence, it is recommended tp measure insulation resistance after 1 Minute from instant…

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Transformer Insulation Explained !

ByPranali N

What are different types of Insulations used in Transformer? There  are two types of Insulations used in Transformers:  1) Oil  2) Solid Insulation What are the Functions of Transformer Oil ? Transformer Oil has mainly three Functions:   1) Insulation  2) Cooling 3) Also, there is contamination caused by Chemical Interactions with Windings and other…

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