Fluke 43B Application Guide

Receptacle Branch Circuits
Measuring Voltage Harmonics
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Measuring Voltage Harmonics
You can perform a quick check on harmonics in a power distribution system by
measuring the Total Harmonic Distortion on the voltage.
1
Open the main menu.
2
3 Select VOLTS.
4
Make connections as shown below:
(5)
Scale the harmonics spectrum screen to see more or less
details.
 Look at the harmonics spectrum screen. Check the spectrum for severe
harmonics.
 If the THD is lower than 5%, the voltage distortion level is probably
acceptable.
 HARMONICS



Fluke 43B Specifications

General

Category	Power Quality Analyzer
Interface	RS-232
Volts AC/DC	Yes
Ohms	Yes
Continuity	Yes
Diode Test	Yes
Capacitance	Yes
Harmonics Measurement	Up to 51st harmonic
Display	LCD
Battery Life	Approximately 6 hours
Weight	1.1 kg (2.4 lb)
Data Storage	Yes
Amps AC/DC	0.1 to 1000 A (with clamp)
Power Measurement	W, VA, VAR, PF
Dimensions	50 mm
Current Measurement Range	Via current clamp accessories (not built-in)