3 Phase, Four Wire Wye - Dranetz HDPQ-DN-MVB Quick Reference Manual

3 Phase, Four Wire Wye

Channels A, B, and C are connected to voltage and current probes. The
neutral is connected to common and is the reference for the three
voltage channels. The figure also shows voltage connection using
channel D as a differential input for measuring neutral to ground voltage.
Neutral to ground measurements are important but optional.
NOTE Be sure to connect the current probe with the arrow
pointing towards the load or an erroneous power reading
will result.
Phasor
Diagrams
1 20 º
V
C
0º
V
A
V
B
24 0º
30
HDPQ-DN-MVB-103
120º
I
C
0º
I
A
I
B
240º