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An autotransformer is no different than a regular transformer. It has "effectively" two windings, a primary and a secondary. Its just that one end of the primary is connected to one end of the secondary. It can also be said that it has only one winding, and that there is a tap someplace in that winding, but the end result is the same. Depending on how it is connected, it can step up or step down the voltage. Some autotransformers have multiple taps. Some, called variacs, have a sliding contact that allows relatively fine control of the output. The up side of an autotransformer is that it can be easier to build. The downside is that it does not provide electrical isolation between primary and secondary, nor can it filter harmonics as well as a dual winding transformer.
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Advantages of autotransformer?
the power can flow either way through autotransformer (345/120 kV) ?
What is the Working principle of auto transformer?
An autotransformer (sometimes called autoformer)[1] is an electrical transformer with only one winding. The winding has at least three electrical connection points called taps. The voltage source and the load are each connected to two taps. One tap at the end of the winding is a common connection to both circuits (source and load). Each tap corresponds to a different source or load voltage. In an autotransformer a portion of the same winding acts as part of both the primary and secondary winding. Operation he ratio of secondary to primary voltages is equal to the ratio of the number of turns of the winding they connect to. For example, connecting at the middle and bottom of the autotransformer will halve the voltage. Depending on the application, that portion of the winding used solely in the higher-voltage (lower current) portion may be wound with wire of a smaller gauge, though the entire winding is directly connected.
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Advantages of autotransformer?
the power can flow either way through autotransformer (345/120 kV) ?
What is an autotransformer?
An autotransformer is a transformer where the primary and secondary are a single winding.
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Vector group of autotransformer?
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