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3 Phase (Floating or Grounded) Delta
In this connection, the instrument uses voltage channels A, B, and C as
differential inputs with channel A monitoring phase A-B, channel B
monitoring phase B-C, and channel C monitoring phase C-A. Current
inputs are connected to line currents A, B, and C.
HDPQ-DN-MVSTR-104
CAUTION
Connections must be performed in compliance with all
safety requirements applicable to your installation.
NOTE
Be sure to connect the current probe with the arrow on
the handle pointing towards the load or an erroneous
power reading will result.
Connections of the CT leg to ground is recommended,
but not required for proper operation.
Phasor Diagrams
120º
V
C
0º
V
A
V
B
240º
29
90º
I
C
I
I
A
B
330º
210º
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