Symbols And Abbreviations - AEMC PowerPad 8435 User Manual

Voltage dip: temporary reduction in the voltage amplitude at a point in the electrical power network below a given
threshold.
Watt: unit of measurement for power (W symbol).
A.3 Symbols and Abbreviations
Meanings of the symbols and abbreviations used:
Symbol
AC and DC components
AC component only
DC component only
F
Phase shift of phase-to-neutral voltage with respect to phase-to-neutral current
Inductive phase shift
Capacitive phase shift
° Degree
-.+
Expert mode
| | Absolute value
S
Sum of values
x Mean value (arithmetic mean)
%
Percentage
%f Fundamental value as reference
%r
Total value as reference
F or F Phase shift of voltage with respect to current
VA UA
A Current; also Ampere (unit)
A-h
Current harmonic
Acf
Crest (peak) factor of current
Ad RMS distortion current
Adc DC current
Ah
Current harmonic
Apk+ Maximum peak value of the current
Apk-
Minimum peak value of the current
Arms
True RMS current
Athd
Total harmonic distortion of current
Athdf
Harmonic distortion of the current with the RMS value of the fundamental as reference
Athdr
Harmonic distortion of the current with the total RMS value without DC as reference
Aunb
Current unbalance
AVG Mean value (arithmetic mean)
BTU
British Thermal Unit
CF Peak factor (current or voltage)
cos F
Cosine of the phase shift of voltage with respect to current (DPF)
DC
DC component (current or voltage)
DF
Distortion factor (THD-R)
DPF Displacement factor (cos F)
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