330. As shown in the illustration, what is the purpose of the main contacts of contactor «1S»

The "1S" contactor connects the autotransformer in delta configuration during the starting/acceleration period.
The "1S" contactor connects the autotransformer to the line during the starting/acceleration period.
The "1S" contactor connects the autotransformer in wye configuration during the starting/acceleration period.
The "1S" contactor connects the autotransformer in wye configuration during the run period.

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