Power Quality Analyzer Model 8335
127
Measureme
n
t method:
all measurement methods associated to an individual
measurement.
Nominal voltage:
voltage by which a network is named or identified.
Order of a harmonic:
ratio of the frequency of the harmonic to the fundamental
frequency; a whole number.
Passband:
range of frequencies in which the response of a device exceeds some
specified minimum.
Peak:
maximum (+) or minimum (-) peak value of the signal.
Peak factor:
relation between the peak value and efficient value of the current.
Phase:
temporal relationship between current and voltage in alternating current
circuits.
Phase and route:
a measurement route corresponds to a difference in potential
between two conductors. A phase is a simple conductor. In polyphased systems, a
measurement route can be between two phases or a phase and neutral or a phase
and earth or neutral and earth.
Phase displacement factor:
relationship between the active power and apparent
power of the fundamental component.
Power displacement factor:
expresses the difference between the apparent and
active power when and only when the relationship of the voltage phase and current
to the fundamental is taken into account.
Power factor:
relationship between active and apparent power.
PST:
(Short term perception).
Calculation of flicker over a ten minute cycle.
PLT:
(Long term perception).
Calculation of flicker over a two-hour cycle.
RMS:
Root Mean Square.
Efficient value of a current or voltage.
Temporary surge at industrial frequency:
temporary increase in the voltage
amplitude at a point in the electrical power network above a given threshold.
THD:
Total Harmonic Distortion
. The rate of total harmonic distortion gives the
influence of harmonic components in a signal.
Voltage dip:
temporary reduction in the voltage amplitude at a point in the electri-
cal power network below a given threshold.
UNB:
Voltage unbalance in a polyphased electric power network; state in which
the RMS voltages between conductors and/or the phase differences between suc-
cessive conductors are not all equal.
Watt:
unit of measurement for power (W symbol).
Shop for AEMC products online at:
1.877.766.5412
www.
PowerMeterStore
.ca
