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Fluke 43B Application Guide

Fluke 43B
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75
Chapter 7
Definitions
Active Power
The Active Power (Watt) is that portion of electrical power that is real. It
includes heat losses. Utility charges are based on Watts.
Apparent Power
Apparent Power (VA) is the product of the rms voltage and current which
relates to the effective load seen by the transformer and current carrying
conductors.
Black out (see outage)
Brown out (see sag)
Cos ϕ
ϕϕ
ϕ (see Displacement Power Factor, DPF)
Displacement Power Factor, DPF (Cos ϕ
ϕϕ
ϕ)
The ratio of real power to apparent power. Displacement Power Factor is the
cosine of the phase angle between the fundamental current and the
fundamental voltage (cos ϕ). Inductive loads cause current to lag behind
voltage, while capacitive loads cause current to lead voltage.
The displacement power factor uses only the fundamental of the signal for its
calculation. (see also: Power Factor)
DPF Interpretation
0 to 1 current leads or lags, device is consuming power.
1 current and voltage in phase, device is consuming power.
-1 current and voltage in phase, device is generating power.
-1 to 0 current leads or lags, device generating power.
Dropout
A discrete voltage loss. A voltage sag* for a very short period of time
(milliseconds).

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Fluke 43B Specifications

General IconGeneral
CategoryPower Quality Analyzer
InterfaceRS-232
Volts AC/DCYes
OhmsYes
ContinuityYes
Diode TestYes
CapacitanceYes
Harmonics MeasurementUp to 51st harmonic
DisplayLCD
Battery LifeApproximately 6 hours
Weight1.1 kg (2.4 lb)
Data StorageYes
Amps AC/DC0.1 to 1000 A (with clamp)
Power MeasurementW, VA, VAR, PF
Dimensions50 mm
Current Measurement RangeVia current clamp accessories (not built-in)

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