Substation transformers are devices that automatically switch power from one voltage to another. They allow for a simple way to change your current electrical supply without the use of a third party.  They are usually tall and slender, with a rotating arm that can transfer power from one substation to another. Substation Transformers are also called active power transformers.

Substation Transformers are used to transmit power across long distances. The substation transformer is a special type of transformer that is designed to connect different voltage levels together. This makes it possible to send power out over long distances without having to use multiple transformers. 

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How Are Substation Transformers Different?

Generally, there are two types of substation transformers: core transformers and auxiliary transformers. Both types work in different ways, however; core transformers only work with alternating current (AC) while auxiliary transformers can also work with direct current (DC).

The key difference between the two is that a core transformer will have one or more cores (or windings), while an auxiliary transformer will only have one.

Types of Substation Transformers

Substation Transformers can be broken down into three main categories: rectifiers, converters, and regulators.

Rectifiers convert AC to DC. Converters change DC voltage to AC voltage. Regulators maintain a constant DC voltage. 

Rectifiers are used in power plants to create AC power. Converters are used in homes and businesses to change AC voltage to what the device needs, like 12VDC or 5VDC. 

Regulators are important because they keep the power flowing even when there is short or no power coming in from the grid.