The basic structure of the voltage transformer

It also has two windings, one called the primary winding, called the secondary winding. Two windings are mcb circuit breaker on or around the core. And between the two windings have insulation between the winding and the core, the two windings and between the windings and the core are electric transformer isolated. Voltage Circuit breaker in operation, the primary winding N1 and coupled on the line, the secondary winding N2 and coupled to the instrument or relays. Therefore, the way the measuring voltage power lines, although a voltage is high, but the second is a low pressure, to ensure the safety of the operator and the instrument.