Answer / rachuri_sree

The cuurrent in the secondary of the arc furnace will be
very high i.e. in kA. Hence the secondary will be devided
into no. of small bus bars and will be connected to the 3
electrodes to form a Delta, using copper hollow tubes and
flexible hoses. Water will be circulating in the copper
tubes for providing cooling. There will be a provision to
change the primary connection either in star or in delta.
Three single phase transformers can also be used instead of
only one 3 phase transformer.

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