A voltage transformer is a voltage change device. It transforms high voltage to low voltage to reflect the change of high voltage value with low voltage. As a result, the voltage transformer can be measured directly with ordinary electrical instruments. The transformer is also called a transformer, which is a voltage changer.

A voltage transformer for voltage transformer. It transforms high voltage to low voltage to reflect the change of high voltage value with low voltage. As a result, the voltage transformer can be measured directly with ordinary electrical instruments.

The voltage transformer is also called the instrument transformer, which is a voltage changer.

The capacity of a voltage transformer is small, usually only a few hundred to a few hundred volts.

Voltage transformer at one time is the voltage of the grid, which is not affected by the secondary load, and in most cases the load is constant.

The secondary side load is mainly the instrument and relay coils, which have very large impedance and very little current. If the secondary load is increased indefinitely, the secondary voltage will decrease, causing the error to increase.

The voltage transformer is used to measure the voltage indirectly, accurately reflecting the value of the high pressure side and ensuring the accuracy of the measurement.

6, no matter how high voltage transformer primary voltage, the second level of rated voltage is 100 v commonly, makes measuring instrument and the relay coil voltage to standardize on manufacturing. It also guarantees the safety of instrument measurement and relay protection, and also solves the difficulties in the insulation and manufacturing process of high-voltage measurement.

The voltage transformer is often used in the circuit of measuring and relay protection.