When replacing a defective transformer in a paralleled transformer configuration, which of the following actions must be carried out to ensure proper operation of the equipment it serves?

Question

Accepted Answer

The transformer connections must be made as before with regard to the indicated polarity.

Answer

The iron core of the transformer must be flashed to pre-magnetize it.

Answer

The secondary leads must be grounded for 10 minutes to remove static charges.

Answer

The iron core must be grounded for 10 minutes to remove any residual magnetism.

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