33KV Oil Filled Potential (Voltage) Transformer

Outdoor Oil Filled Potential (Voltage) Transformer is a Voltage Transformers design in which there are two tanks. This is a special kind of voltage transformer and is used generally for higher system voltages upto 132 KV.

The lower tank consist of primary windings, secondary windings & core. The upper tank is used due to the Bushing limitations to withhold Graded Insulation of HV Windings. Other purpose to provide a conservator tank is for oil expansion during high temperatures.

Oil filled voltage transformer is a type of instrument transformer whose function is to step down voltage in an electrical system to a level measurable by various metering instruments.