PPT Slide

Line Currents:

IA = VAN / Z = |VAN|/ 0° / |Z|/q = |Iline|/-q ( = IBA - IAC )

IB = VBN / Z = |VBN|/ -120° / |Z|/q = |Iline|/-q - 120° ( = ICB - IBA )

IC = VCN / Z = |VCN|/ +120° / |Z|/q = |Iline|/-q + 120° ( = IAC - ICB )

Section 11.2: Three-Phase Connections cont.

Delta’s Phase Currents:

IBA = (|Iline|/Ö3) /-q + 30° , ICB = (|Iline|/Ö3) /-q - 90° and IAC = (|Iline|/Ö3) /-q + 150°

Where: IA+ IB+ IC = 0 and IBA + ICB + IAC = 0 (i.e., both sets of three-phase currents are balanced.)

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