What are the categories of voltage transformers?

A voltage transformer is a device that converts high voltage into low voltage, mainly composed of primary and secondary coils, iron core and insulation. When voltage is applied to the primary winding, magnetic flux is generated in the iron core, and voltage is generated in the secondary winding according to the law of electromagnetic induction. The voltage ratio changes according to the number of turns of the primary or secondary winding. By adjusting the ratio, voltage transformers with different ratios can be formed.
The voltage transformer converts high voltage into low voltage proportionally, usually 100V, to meet the needs of measuring instruments, relay protection and other equipment. The primary side of the voltage transformer is connected to the primary system, and the secondary side is connected to the measuring instrument, relay protection, etc.
Voltage transformers are mainly divided into electromagnetic and non-electromagnetic types. Electromagnetic voltage transformers are the most widely used, including capacitive voltage transformers, etc. In addition, there are non-electromagnetic voltage transformers, such as electronic and photoelectric types.
Electromagnetic voltage transformers realize voltage conversion through the principle of electromagnetic induction, while non-electromagnetic voltage transformers realize voltage conversion through electronic circuits or optical principles. It is very important to choose the right type of voltage transformer according to different needs and application scenarios.
In short, a voltage transformer is a device that converts high voltage into low voltage. Its main function is to convert the high voltage in the primary system into a low voltage that is easy to measure and control to meet the needs of measuring instruments, relay protection and other equipment. Voltage transformers are mainly divided into two types: electromagnetic and non-electromagnetic. Choosing the right type is crucial to meet different needs and application scenarios.