SECTION 4
OPERATION
39
4.3.1 METERING DISPLAYS (cont)
4.3.1.1 WAVEFORM ANALYSIS
(OPTION- Harmonic Analysis and Synthesis)
Waveform analysis functions are optionally available to report both magnitude and phase angle (relative
to 0º of the fundamental voltage waveform) of each harmonic for metered voltage and current
waveforms. THD, ODD and EVEN harmonic distortion measurement data can also be displayed
The harmonic content is displayed from the 2nd up to the 51st harmonic, depending on the number of
samples analyzed. See the
EDIT
key function described below.
Pressing the
DISPLAY
key repeatedly will display the following screen.
Press DISPLAY to view Harmonic Data.
Then use ENTER to UPDATE, CLEAR to EXIT.
+/- selects VOLTS or CURRENT,
The Va, Vb, Vc keys select the PHASE.
Pressing the
DISPLAY
key repeatedly at this point will display the HARMONIC DATA in memory with
screens similar to the following.
Φ
A VOLTAGE THD=0.1 % OHD=0% EHD=0.1%
HARMONIC: 2nd 3rd 4th 5th 6
th
CONTENT: .1% 0% 0% 0% 0%
Φ
ANGLE: 0º 0º 0º 0º 0º
THD
is TOTAL HARMONIC DISTORTION for all harmonics of the selected parameter and phase.
OHD
is ODD HARMONIC DISTORTION for all harmonics of the selected parameter and phase.
EHD
is EVEN HARMONIC DISTORTION for all harmonics of the selected parameter and phase.
CONTENT
is displayed as a percentage of the amplitude of the fundamental
Φ
ANGLE
is displayed in the range of -180º to +180º.
The
Va
,
Vb
and
Vc
keys will light the Phase LED to select which phase is to be updated or displayed.
Only one phase can be analyzed at a time. Pressing the
+/-
key will toggle between current and voltage
parameters.
The
CLEAR
key will return the display back to the V/I meter.
The
ENTER
key begins the analysis function. The UPC will measure the selected signal, and calculate
and update the harmonic data in memory. This may take some time, depending on the number of
samples analyzed (see the
EDIT
key function below). A beep is heard when the update is complete.
Only the parameter and phase selected as above is updated. Other parameters are retained. All
parameters are then retained until power-off or the memory is cleared.
Summary of Contents for UPC-12
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Page 12: ...SECTION 1 GENERAL viii THIS PAGE INTENTIONALLY BLANK ...
Page 17: ...SECTION 1 GENERAL 5 PACIFIC Figure 1 3a SCU UPC 32 Figure 1 3b UPC 32 Figure 1 3c UPC 12 ...
Page 46: ...SECTION 4 OPERATION 34 PA CIFIC FIGURE 4 1 POWER SOURCE FRONT PANEL ...
Page 77: ...SECTION 4 OPERATION 65 90 0 100 0 85 95 100 90 FIGURE 4 6 2 1 EDITED WAVEFORM ...
Page 139: ...NOTES 127 NOTES ...
