The most important precautions must be taken to never open the secondary circuit of current transformer (C.T.) while current following in the primary circuit. Opening of…

A current transformer (C.T.) is used to measure high alternating current in a power system. The primary of the transformer has a few turns of thick wire where as the sec…

A potential transformer (P.T.) is used to measure high alternating potential difference (Voltage) in a Power system. The primary of this transformer has many turns while…

Automatic Voltage Regulator The automatic voltage regulator is used to regulate the voltage. It takes the fluctuate voltage and changes them into a constant voltage. The…

Transformer on No Load Condition When the transformer is operating at no load, the secondary winding is open-circuited, which means there is no load on the secondary sid…

On-Load Tap-Changing Transformer Definition:  The Transformer which is not disconnected from the main supply when the tap setting is to be changed such type of transform…