'Delta connected load' presentation slideshows

DKT213 ELECTRICAL TECHNOLOGY

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POLYPHASE CIRCUITS

POLYPHASE CIRCUITS. LEARNING GOALS. Three Phase Circuits Advantages of polyphase circuits. Three Phase Connections Basic configurations for three phase circuits. Source/Load Connections Delta-Wye connections. Power Relationships Study power delivered by three phase circuits.

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Power Triangle

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Problem 1 2 . 10 Determine the current in the neutral line.

Problem 1 2 . 10 Determine the current in the neutral line. UNBALANCED LOAD NEUTRAL CURRENT IS NOT ZERO. Problem 1 2 . 12 Solve for the line currents in the Y- ? circuit. Take Z ? = 60 ? 45 ??. SINGLE PHASE EQUIVALENT CIRCUIT.

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Seq. Imp. of balanced Y-load: Vag = ZYIa + Zn In = ZYIa+ Zn(Ia + Ib + Ic)

Seq. Imp. of balanced Y-load: Vag = ZYIa + Zn In = ZYIa+ Zn(Ia + Ib + Ic) Vag =(Zy+Zn)Ia + ZnIb +ZnIc Similarly, Vbg =ZnIa + (Zy+Zn)Ib +ZnIc Vcg =ZnIa + ZnIb +(Zy+Zn)Ic. In matrix form, V ph = Z ph I ph In terms of sym components,.

171 views • 7 slides