Glossary Of Terms - AEMC PowerPad III 8336 User Manual

°
-.+
| |
Σ
%
%f
%r
Φ
VA
A
A-h
Acf
Ad
Adc
Ah
Apk+
Apk-
Arms
Athd
Athdf
Athdr
Aunb
AVG
Blackout
BTU
CF
Channel and phase
cos Φ
D
Dip threshold
DC
Dh
DPF
E
FK
FHL
Flicker
Frequency
Fundamental
component
Power Quality Analyzer PowerPad

GLOSSARY OF TERMS

AC and DC components
AC component only
DC component only
Inductive phase shift
Capacitive phase shift
Degree
Expert mode
Absolute value
Values of the system
Percentage
Fundamental value as reference
Total value as reference
Phase shift of the voltage with respect to the current
Current or the unit "ampere"
Harmonics in current
Peak factor of the current
RMS distortion current
DC current
Current harmonic
Maximum peak value of the current
Minimum peak value of the current
RMS current
Total harmonic distortion of the current
Harmonic distortion of the current with the RMS value of the fundamental as reference
Harmonic distortion of the current with the total RMS value without DC as reference
Unbalance in current
Mean value (arithmetic mean)
Fall of voltage, at some point in the power network, to below a specified threshold
British Thermal Unit
Peak factor (Crest Factor) in current or voltage: ratio of the peak value of a signal to the RMS
value
A measurement channel corresponds to a difference in potential between two conductors. A
phase is a single conductor. In polyphased systems, a measurement channel may be between
two phases, or between a phase and neutral, or between a phase and earth, or between neutral
and earth.
Cosine of the phase shift of the voltage with respect to the current (displacement factor – DPF)
Distortion power
Specific voltage used to define the beginning and end of a voltage dip
DC component (current or voltage)
Distortion energy
Displacement factor (cos Φ)
Exa (10 )
18
K factor. Used to quantify the effect of a load on a transformer
Harmonic loss factor
A visual effect of voltage variations
Number of full voltage or current cycles in one second
Component at the fundamental frequency
III Model 8336
®
135