Rockwell Automation 1412-PP21xx PowerPad Portable Powermonitor - Manual (Page 32)

32 Rockwell Automation Publication 1412-UM001D-EN-P - September 2012
Chapter 3 Display Modes
Harmonics Mode
Press the harmonic display mode button -
Use the function buttons to select the type of harmonic analysis:
• V - Single phase voltage analysis
• A - Current analysis
• VA - Power and direction flow analysis
• U - Phase-to-phase voltage analysis
• The Plus and Minus
buttons let you zoom in or out, in increments
of 2%, 5%, 10%, 20%, 50%, and 100%.
Single-phase and Phase-to-phase Voltage Analysis
 Values measured for each phase, at cursor position (in the example shown
above, the 3rd harmonic is selected and displayed).
The information displayed is:
– Harmonic order
– Percentage relative to the fundamental
– RMS value
– Phase angle in relation to the fundamental, according to the
measurement type chosen (in this example V) with the variable
function buttons just below the screen.
 Cursor enables selection up to 50th harmonic, with the Left/Right Cursor
buttons. As soon as the 25th harmonic is reached, the 25th to 50th range
appears (0 represents the DC component).
 Selection of expert mode -,+ is available for three-phase hookups by
pressing the Up/Down Cursor buttons
See Harmonic Analysis in Expert Mode on page 34 for description.
07/25/02 59.95Hz 10:26 100%
.+
3L
L1
L2
L3
3
1
2
31.5
%
Vh 03 1.3
%
0.6
%
31.4
v
2.7
v
1.2
v
+003° +113° -094°
1 2 3
V A VA U
50
%
25
1 3 5 7 9 11 13 15 17 19 21 23 25