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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 measure line currents A, B, and C.
CAUTION
Connections must be performed in compliance with all
safety requirements applicable to your installation.
*NOTE
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
HDPQ-DN-MZP-104
90º
I
C
I
I
A
B
330º
210º
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