Testing of Capacitive Voltage Transformer (CVT)
Type Tests of Capacitive Voltage Transformer (CVT) These tests are done according to IS: 3156 (Part-1) Routine Tests These tests are done according to IS: 3156 (Part-1)
Potential Transformer
A Potential Transformer (PT), also known as a Voltage Transformer (VT), is a type of instrument transformer used to step down high voltages to a lower, measurable level for metering and protection in electrical power systems.
Ferroresonance in Potential Transformer
As the name suggests, ferroresonance is a resonance phenomenon related to iron. Ferro means ‘iron’. Before understanding the ferroresonance, let us recall the concept of resonance first. Suppose, we have a series RLC circuit, across which a voltage source is connected. Say a current I flowing through the circuit. VL is the voltage developed across … Read more
Technical Parameters of a Potential Transformer (PT)
Some the important parameters are listed here for the reference only. The actual technical parameters of a potential transformer may be somewhat different depending on the actual requirements.
Top Interview Questions on Voltage Transformer
What is the Rated Voltage Factor in voltage transformers, and how is it determined? This is the ratio of the maximum operating voltage to the rated primary voltage of the PT. This factor is to be multiplied with the primary rated voltage to determine the maximum operating voltage of the PT at which the PT … Read more