User Manual

13
Meanings of the symbols and abbreviations used:
Symbol Designation
AC and DC components.
AC component only.
DC component only.
Inductive phase shift.
Capacitive phase shift.
°
Degree.
-.+
Expert mode.
| |
Absolute value.
Σ
Sum of values.
%
Percentage.
%f
Fundamental value as reference
%r
Total value as reference (for the C.A. 8333 only).
Φ
VA
or Φ
UA
Phase shift of voltage with respect to current.
A
Current; also Ampere (unit).
A-h
Current harmonic.
Acf
Crest (peak) factor of current.
Ad
RMS distortion current.
Adc
DC current.
Apk+
Maximum peak value of the current.
Apk-
Minimum peak value of the current.
Arms
True RMS current.
Athdf
Total harmonic distortion of current in % f.
Athdr
Total harmonic distortion of current in % r (for
the C.A. 8333 only).
Aunb
Negative-sequence current unbalance rate.
AVG
Mean value (arithmetic mean).
CF
Peak factor (current or voltage).
cos Φ Cosine of the phase shift of voltage with respect
to current (DPF – fundamental power factor or
displacement factor).
DC
DC component (current or voltage).
DPF
Displacement factor (cos F).
FHL
Harmonic loss factor.
FK
K factor.
Hz
Frequency of network studied.
L
Channel (Line).
MAX
Maximum value.
MIN
Minimum value.
ms
Millisecond.
PEAK
or PK
Maximum (+) or minimum (-) peak instantaneous
value of the signal.
PF
Power factor.
PST
Short-term flicker.
RMS
True RMS value (current or voltage).
t
Relative date of time cursor.
Symbol Designation
tan Φ Tangent of the phase shift of voltage with respect
to current.
THD
Total harmonic distortion (in %f or for the C.A
8333 only in %r).
U
Phase-to-Phase voltage.
U-h
Phase-to-phase voltage harmonic.
Ucf
Phase-to-Phase voltage crest factor.
Ud
Phase-to-phase RMS distortion voltage.
Udc
Phase-to-phase DC voltage.
Upk+
Maximum peak value of the phase-to-phase voltage.
Upk-
Minimum peak value of the phase-to-phase voltage.
Urms
True RMS phase-to-phase voltage.
Uthdf
Total phase-to-phase voltage harmonic distortion
in %f.
Uthdr
Total phase-to-phase voltage harmonic distortion
in %r (for the C.A 8333 only).
Uunb
Negative-sequence phase-to-phase voltage
unbalance rate.
V
Phase-to-neutral voltage; also Volt (unit)
V-h
Phase-to-neutral voltage harmonic.
S
Apparent power.
S-h
Apparent harmonic power.
D
Distortion power.
Dh
Distortion energy.
Sh
Apparent energy.
Q
1
Reactive power (fundamental).
N
Non-active power
Q
1
h
Reactive energy (fundamental).
Nh
Non-active energy.
Vcf
Peak factor of the phase-to-ground voltage.
Vd
Phase-to-neutral RMS distortion voltage.
Vdc
Phase-to-neutral DC voltage.
Vpk+
Maximum peak value of the phase-to-neutral
voltage.
Vpk-
Minimum peak value of the phase-to-neutral
voltage.
Vrms
True RMS phase-to-neutral voltage.
Vthdf
Total harmonic distortion of phase-to-neutral
voltage in %f.
Vthdr
Total harmonic distortion of phase-to-neutral
voltage in %r (for the C.A 8333 only).
Vunb
Negative-sequence phase-to-ground voltage
unbalance rate.
P
Active power.
Ph
Active energy.