TRANSFORMER 
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In an electric arc furnace, the transformer has a heavy copper bus for the low voltage winding, which can be rated for tens of thousands of amperes.  Winding beginnings and ends are led out separately and "interleaved" for the external delta closure in a Knapsack connection [1].  The transformers are immersed in oil for cooling and insulation, and are designed to with frequent short circuits.
 A variety of types of electrical transformer are made for different purposes.  Despite their design differences, the various types employ the same basic principle as discovered

Electrical Transformer Components (Electrical Engineering) | Udemy


THE TRANSFORMER DOES NOT CONVERT KV TO KVA. KV IS THE UNIT OF VOLTAGE ? AND THE UNIT OF POWER IS KVA. ACCORDING TO THE RATING OF THE TRANSFORMER, THE CONSUMER TAKES THE CURRENT AND IF IT IS TO BE MULTIPLIED BY THE VOLTAGE, IT SHOULD NOT EXCEED THE KVA RATING. THE WORK OF A TRANSFORMER IS TO INCREASE OR WORK THE VOLTAGE FOR WHICH IT