Question: A balanced three-phase source with VAB 440ff30 Vrms supplies a balanced D-connected load with a phase impedance of ZD 20ff 60 V=phase.

A balanced three-phase source with VAB ¼

440ff30 VðrmsÞ supplies a balanced D-connected load with a phase impedance of ZD ¼ 20ff  60

V=phase. Find the phase current IAB and line current IAfor a positive phase sequence.

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