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  2. Distribution transformer - Wikipedia

    en.wikipedia.org/wiki/Distribution_transformer

    A "transformer bank", widely used in North America: three single-phase transformers connected to make a 3-phase transformer. The low-voltage secondary windings are attached to three or four terminals on the transformer's side. In North American residences and small businesses, the secondary is often the split-phase 120/240-volt system. The 240 ...

  3. Single-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Single-phase_electric_power

    A single-phase polemount stepdown transformer in Canada. One supply phase (phase-to-neutral) from the utility is converted to split-phase for the customers. In electrical engineering, single-phase electric power (abbreviated 1φ ) is the distribution of alternating current electric power using a system in which all the voltages of the supply ...

  4. Split-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Split-phase_electric_power

    Split-phase electric power. Pole-mounted single-phase transformer with three-wire center-tapped "split-phase" secondary. On the three secondary terminals, the center tap is grounded with a short strap to the transformer case. A split-phase or single-phase three-wire system is a type of single-phase electric power distribution.

  5. Transformer types - Wikipedia

    en.wikipedia.org/wiki/Transformer_types

    For polyphase systems, multiple single-phase transformers can be used, or all phases can be connected to a single polyphase transformer. For a three phase transformer, the three primary windings are connected together and the three secondary windings are connected together. [5]

  6. Autotransformer - Wikipedia

    en.wikipedia.org/wiki/Autotransformer

    Single-phase tapped autotransformer with an output voltage range of 40%–115% of input. In electrical engineering, an autotransformer is an electrical transformer with only one winding. The "auto" (Greek for "self") prefix refers to the single coil acting alone.

  7. Phase converter - Wikipedia

    en.wikipedia.org/wiki/Phase_converter

    An American Rotary Phase Converter with a Transformer. A phase converter is a device that converts electric power provided as single phase to multiple phase or vice versa. The majority of phase converters are used to produce three-phase electric power from a single-phase source, thus allowing the operation of three-phase equipment at a site that only has single-phase electrical service.

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