Fluke 43B
Applications Manual
32
Measuring Current Harmonics
Check whether the lighting system causes excessive harmonics. These may
influence the system.
1
Open the main menu.
2
3
Select AMPS.
4
Make connections as shown below. Turn all lights on.
Look at the harmonics spectrum and read the THD value. If the current
THD is less than 20%, the harmonic distortion is probably acceptable.
Consider replacing lights with a better quality (which produces less
harmonics) or install a harmonic filter to avoid the injection of harmonics
into the system.
HARMONICS
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