Description
A distribution transformer is a type of transformer that converts high-voltage power from transmission lines to a lower voltage level that’s suitable for residential and commercial use, usually around 240 volts. Distribution transformers are used at the end of an electrical utility’s delivery system and are often pole-mounted.
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Three-phase transformersThese transformers are commonly used for electrical distribution and network applications. They have three conductors, each with a set of primary and secondary windings, and one neutral wire.
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Oil-immersed transformers
These transformers are often used in power supply systems and have ONAN or ONAF cooling systems. They typically have a power of no more than 2500 kVA and a voltage class of up to 35 kV.
Distribution transformers differ from power transformers in that distribution transformers have a voltage rating of less than 1 kV and can withstand short circuit currents of up to tens of amperes, while power transformers have a voltage rating of more than 1 kV and can withstand short circuit currents of up to a few hundred amperes.