What is the role of the voltage transformer?

The voltage transformer (referred to as PT, Voltage Transformer, also referred to as VT), the role of the voltage transformer mainly has the following two points:

(1) Convert high voltage and large current in alternating current into a safe and standardized low voltage and small current. In order to connect a standardized measuring instrument or relay to measure the voltage, current, electric power, electric energy, etc. or for relay protection.

(2) Isolating the secondary circuit from the primary circuit to ensure the safety of the instrument and the person.

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