Marine Electrical Systems USCG Question #253 (Set 9)

What function does an equalizing connection between two compound-wound DC generators operating in parallel serve?

Official USCG Answer & Rule Citation

Correct Answer: Option A — parallel the series fields of the generators

An equalizer bus connects the armatures and series fields of compound-wound generators in parallel, forming a low-resistance path that prevents cumulative compounding instability and circulating currents, thereby guaranteeing stable proportional load sharing as specified by IEEE 45.

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