Physics · Power Systems
A power transformer has its H.V. and L.V. winding connections as Star with earthed neutral and Delta, respectively. If a differential protection scheme is used for this transformer, what should be the connection type of the current transformers (CTs) connected at the H.V. and L.V. windings respectively?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1H.V. : Star, L.V. : Star
- 2H.V. : Delta, L.V. : Star✓
- 3H.V. : Delta, L.V. : Delta
- 4H.V. : Star, L.V. : Delta
Correct answer
H.V. : Delta, L.V. : Star
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