Rockwell Automation 1412-PP21xx PowerPad Portable Powermonitor - Manual (Page 18)

18 Rockwell Automation Publication 1412-UM001D-EN-P - September 2012
Chapter 2 Operation
Electrical Hookup (Electrical Network)
Follow these steps to select the type of power system the PowerPad unit will
measure.
1. Highlight ELECTRICAL HOOKUP with the Up/Down Cursor
buttons, then press Enter.
This screen appears.
2. Choose the hookup type with the Up/Down and Left/Right Cursor
buttons.
3. Press Enter to apply the new hookup selection.
The Configuration menu is once again displayed on the screen.
Hookup Types
These are the types of power systems the PowerPad unit can measure:
• Single or two-phase: The neutral current is not measured or calculated.
• Three-phase, three-wire connection (3V, 3 A):
– On DELTA network: Only power totals are measured.
Powers per phase are displayed, but not valid.
– On WYE network: The neutral current is not calculated. It is necessary
to connect neutral (V) to obtain the power per phase.
• Three-phase, four-wire connection (4V, 3 A): The neutral current is
available and its value and waveform are displayed.
– On WYE network: Powers per phase are available.
TIP Neutral current is calculated, not measured, in the four-wire hookup.
ATTENTION: V1 must be connected in all hookups, since the display is
synchronized from V1 and the network frequency measured by V1.
N
L1
Single-phase
N
L1
L2
Two-phase
N
L1
L2
L3
3 phase-3 wire
(DELTA)
N
L1
L2
L3
3 phase-4 wire
(WYE)
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