3.4 Viewing Harmonic Measured Values
71
The instrument displays the results of harmonic analysis for each channel’s voltage, current, and active
power. Since all calculation processing is performed in parallel internally, you can obtain harmonic measured
values with simultaneity with other measured values simply by switching display parameters.
Additionally, when the synchronization frequency is 45 Hz to 66 Hz, the instrument can perform harmonic
measurement that complies with IEC 61000-4-7:2002.
Set the synchronization source for the harmonic measurement to be performed with the instrument as
described in "3.2.5 Setting the Synchronization Source (SYNC)" (p.51). The source can be set separately for
each wiring mode.
The following table summarizes the instrument’s harmonic measurement parameters and corresponding dis-
play methods:
Switching display modes
3.4 Viewing Harmonic Measured Values
3.4.1 Setting the Synchronization Source
3.4.2 Method for Displaying Harmonic
Measurement Parameters
Display mode
Normal display
LEVEL lamp off
HD% lamp off
Harmonic level display
LEVEL lamp on
HD% lamp off
Harmonic content percentage
display
LEVEL lamp off
HD% lamp on
Measurement
items
• Total harmonic voltage distortion
• Total harmonic current distortion
• Fundamental wave voltage RMS value
• Harmonic current RMS value
• Fundamental wave active power
• Fundamental wave apparent power
• Fundamental wave reactive power
• Fundamental wave power factor
• Fundamental wave voltage/current phase
difference
• Inter-channel voltage fundamental
wave phase difference
• Inter-channel current fundamental
wave phase difference
• Harmonic voltage RMS value
• Harmonic current RMS value
• Harmonic active power
• 0th to 50th order
• Harmonic voltage content
percentage
• Harmonic current content
percentage
• Harmonic active power
content percentage
• 0th to 50th order
1 Press .
2 You can check the display mode
based on the LEVEL lamp and HD%
lamp state.
Example: LEVEL lamp on
LEVEL lamp HD% lamp
Normal display Off Off
Harmonic level display On Off
Harmonic content percentage display Off On
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