28 Rockwell Automation Publication 1412-UM001D-EN-P - September 2012
Chapter 3 Display Modes
The waveforms are selected by pressing the Up/Down Cursor buttons:
– 3U displays the three phase-phase voltages of a three-phase system
– 3V displays the three voltages of a three-phase system
– 3A displays the three phase currents of a three phase, three-wire system
– L1, L2, or L3 displays the current and voltage, on phase one, two, or
three, respectively.
RMS Voltage Measurement on Three Phases
The neutral current is not a direct measurement, but the resulting total
of the 3 currents measured.
The choice of waveforms to be displayed, in any display mode, depends
on the type of connection, see Electrical Hookup (Electrical Network)
on page 18
.
• Single-phase: No choice (L1)
• Three-phase, three-wire: 3U, 3V, 3A, L1, L2, L3
• Two-phase: 2V, 2A, L1, L2
• Three-phase, four-wire: 3U, 3V, 4A, L1, L2, L3
300V
RMS
0
-300
<t= 5.0ms V1= +2783V2= -144 V3= -147 >
207.6 v204.4 v204.9 v
123
3U
3V
3A
L1
L2
L3
THDCF
max
min
07/25/0259.99Hz 10:26 100
%
