Three-Phase Wye Winding; Phasor Diagram Showing Three-Phase Voltages And Currents - Electro Industries Shark 200 Installation & Operation Manual

1: Three-Phase Power Measurement
V
C
Phase 3
N
Phase 1
Phase 2
V
V
B
A
Figure 1.1: Three-phase Wye Winding
o
The three voltages are separated by 120 electrically. Under balanced load conditions
o
the currents are also separated by 120 . However, unbalanced loads and other
o
conditions can cause the currents to depart from the ideal 120 separation. Three-
phase voltages and currents are usually represented with a phasor diagram. A phasor
diagram for the typical connected voltages and currents is shown in Figure 1.2.
V
B
I
B
N
I
A
I V
V
C A
C
Figure 1.2: Phasor Diagram Showing Three-phase Voltages and Currents
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Electro Industries/GaugeTech Doc E149701 1-2
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