Potential Trasnformer  And capaciter coupled transformer.
Channel: Tamil Etronics
Date: 2017-11-24

A PT, Potential Transformer, can be thought of as a pure transformer with primary and secondary windings; PT's are sometimes referred to as magnetic transformers due to the fact that their mode of operation is purely magnetic. It is used to step-down the input voltage from a power line to a voltage level that can be processed by metering devices and protection relays in a substation.