What is the operational advantage of a ring bus (loop) topology in medium voltage distribution for large data centers?
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A
It reduces the number of step-down transformers needed by sharing one transformer across multiple feeder loops
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B
Any single cable segment or switching device failure can be isolated while power is restored to all healthy loads from the opposite direction
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C
It eliminates the need for automatic transfer switches at the UPS and PDU level
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D
It provides continuous voltage regulation around the distribution loop