User Manual

102
m milli (10
-3
)
ms millisecond.
M Mega (10
6
)
MAX Maximum value.
MIN Minimum value.
N Non-active power.
Nh Non-active energy.
Nominal voltage: Reference voltage of a network.
non-nuclear toe: non-nuclear tonne oil equivalent.
nuclear toe: nuclear tonne oil equivalent.
Order of a harmonic: ratio of the frequency of the harmonic to the fundamental frequency; a whole number.
P Peta (10
15
)
P Active power.
Passband range of frequencies in which the response of a device exceeds some specified minimum.
PF Power Factor: ratio of active power to apparent power.
Ph Active energy.
Phase temporal relationship between current and voltage in alternating current circuits.
PK or PEAK. Maximum (+) or minimum (-) peak value of the signal.
PST Short-term severity. The device calculates its PST over 10 minutes.
Q
1
Reactive power.
Q
1
h Reactive energy.
RMS RMS (Root Mean Square) value of current or voltage. Square root of the mean of the squares of the instantaneous
values of a quantity during a specified interval.
S Apparent power.
S-h Harmonics in power.
Sh Apparent energy.
Temporary surge at industrial frequency: temporary increase in voltage at some point in the power network, to above a speci-
fied threshold.
t Relative date of the Time cursor.
T Tera (10
12
)
tan Φ Tangent of the phase shift of the voltage with respect to the current.
toe Tonne oil equivalent (nuclear or non-nuclear).
THD Total Harmonic Distortion. The total harmonic distortion represents the proportion of the harmonics of a signal with
respect to the fundamental RMS value (%f) or (for the C.A 8333 only) with respect to the total RMS value without
DC (%r).
U Phase-to-phase voltage (line voltage).
U-h Harmonics in phase-to-phase voltage (line voltage).
Ucf Peak factor of the phase-to-phase voltage (line voltage).
Ud Phase-to-phase RMS distortion voltage (line voltage).
Udc Phase-to-phase DC voltage (line voltage).
Uh Harmonic of the phase-to-phase voltage (line voltage).
Upk+ Maximum peak value of phase-to-phase voltage (line voltage).
Upk- Minimum peak value of phase-to-phase voltage (line voltage).
Urms Phase-to-phase RMS voltage (line voltage).
Uthd Total harmonic distortion of the phase-to-phase voltage (line voltage).
Uthdf Harmonic distortion of the phase-to-phase voltage (line voltage) with the RMS value of the fundamental as refer-
ence.
Uthdr Harmonic distortion of the phase-to-phase voltage (line voltage) with the total RMS value without DC as reference.
Uunb Negative-sequence unbalance rate in phase-to-phase voltage (line voltage).
V Phase-to-neutral voltage or the unit “volt”.
V-h Harmonics in phase-to-neutral voltage (phase voltage).
Vcf Peak factor of the phase-to-neutral voltage (phase voltage).
Vd Phase-to-neutral RMS distortion voltage (phase voltage).
Vdc Phase-to-neutral DC voltage (phase voltage).
Vpk+ Maximum peak value of the phase-to-neutral voltage (phase voltage).