MD 9273 Leakage Clamp
hn
–
Current harmonics test
39
U
Harmonics chart.
Urms
Effective voltage value.
THDu [%]
Total harmonic distortion.
THDu [V]
Absolute voltage of higher harmonics.
U:h5 [%]
Relative value of 5
th
harmonic*.
U:h5 [V]
Absolute voltage of 5
th
harmonic*.
*Tap on chart at chosen harmonic to present it value
Appendix G
h
n
–
Current harmonics test
Harmonics (1 through to 19) are measured and displayed in the chart as an absolute magnitude of the signal
or as a percentage of the signal value at the fundamental frequency (the 1
st
harmonic h1). Absolute
magnitude or percent value display is chosen by parameter setting.
Figure G.14: Harmonics I test menu
Measurement parameters
Type
%
harmonics and distortion are displayed as relative value
A
harmonics and distortion are displayed as absolute value
Connection diagram
Use
Current
test connection scheme from MD 9273 Manual.
Measurement procedure
Connect MD 9273 to the item to be tested and set Bluetooth® mode.
Enter the Harmonics I function and wait for active Bluetooth® communication.
Set Type parameter for display values of harmonics.
Set charts Y value range within expected values (optional; could be set later).
Start the continuous measurement.
Stop the measurement.
