How to Ensure the Transformer Has a Rated Voltage Output?

How to Ensure the Transformer Has a Rated Voltage Output?

Voltage is too high or too low will affect the normal work and service life of the transformer, so it must be regulated.
The voltage is regulated by drawing out several taps in the primary coil, connected to the tap start, which changes the number of turns of the coil by turning the contacts. The desired voltage rating can be obtained by turning the position of the tap switch. It should be noted that voltage regulation should usually be carried out after cutting off the load connected to the transformer.