Power Transformers

Power Transformers

Power transformers are electrical devices that transform voltage to lower levels. Power transformers are used primarily to couple electrical energy from a power supply line to a circuit system. They provide the power source for televisions, generators, and other high voltage power transmission.

There are many variations among power transformers. Power transformers may be dry-type or cast coil design and be pole-mounted, pad-mounted, or wall-mounted. They can have 3R or 4 enclosures. Power transformers are also available with aluminum or copper windings.

Some considerations for the choice of a power transformer include the voltage that is available, the voltage load required for equipment, current and future KVA load, Hz frequency, single or three phase needs, auto- or double-winding, mounting configuration, and whether the transformer will be used indoors or outdoors.