In which of the following 3-phase transformer connection configurations can zero-sequence currents not flow into the transmission line from the windings because the neutral connection is absent?

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Physics · Transformers

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Primary in star, neutral not grounded; secondary in delta

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Answer 1

Primary in star, neutral grounded; secondary in star, neutral grounded

Answer 2

Primary in star, neutral not grounded; secondary in star, neutral grounded

Answer 3

Primary in star, neutral grounded; secondary in delta

Answer 4

Primary in star, neutral not grounded; secondary in delta

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