Fluke 43B Application Guide

Lighting Loads
Measuring Power on Single Phase Loads
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Measuring Power on Single Phase Loads
Inductive loads, such as fluorescent lamps, cause a phase shift between the
voltage and the current. This influences the real power consumption.
1
Open the main menu.
2
3
Make connections as shown below:
 Look at the W reading. It shows the real power consumption of the lights.
 Look at DPF (cos ϕ) reading. Low DPF means that corrective measures
have to be taken such as installing capacitors to correct the phase shift
between the voltage and the current.
Note
If PF and DPF differ greatly, this indicates the presence of
harmonics. Check for harmonics first, before installing capacitors.
 POWER



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)