39/41B Users Manual

 

Table 3. Screen Abbreviations (cont)

 

 

 

Screen Usage

 

Name and Description

 

 

 

DPF

 

Displacement Power Factor cosφ fundamental

 

 

The ratio of the active power (W) to the apparent power

 

 

(VA rms) at the fundamental frequency. Equivalent to

 

 

cosφ at that frequency. Traditional power factor for linear

 

 

loads.

HZ

 

Waveform Screens: Fundamental frequency in hertz

 

 

 

Harmonics Screens: Frequency of selected harmonic in

 

 

hertz

KF

 

K-Factor

 

 

 

A load current waveform rating calculation that rates the

 

 

waveform’s capability to produce harmonic-related heat

 

 

loss in transformers and other magnetic components.

 

 

Used to select transformer K-ratings that match load

 

 

current K-factor measurements.

PF

 

Power Factor

 

 

 

Ratio of active power to apparent power (including all

 

 

harmonics).True power factor for all loads, linear and

 

 

non-linear.

 

 

 

%THD-FTotal Harmonic Distortion (as % of Fundamental)

Defines amount of harmonic distortion as a percentage of the waveform at the fundamental frequency.

%THD - F = rms of harmonics (less fundamental) rms of fundamental

%THD-RTotal Harmonic Distortion (as % of rms total)

Defines amount of harmonic distortion as a percentage of the rms value of waveforms at all frequencies (fundamental and harmonics).

%THD - R = rms of harmonics (less fundamental) total rms

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Fluke 41B, 39 user manual Screen Abbreviations, Screen Usage Name and Description