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Incoming / outgoing / inductive / capacitive
The device provides information for all four quadrants. Quadrants
are normally identified using the roman numbers I, II, III and IV, as
shown in the adjacent graphic. Depending on whether the system
is viewed from the producer or consumer side, the interpretation
of the quadrants is changing: The energy built from the active
power in the quadrants I+IV can either been seen as delivered or
consumed active energy.
By avoiding terms like incoming / outgoing energy and inductive or
capacitive load when displaying data, an independent
interpretation of the 4-quadrant information becomes possible.
Instead the quadrant numbers I, II, III or IV, a combination of them
or an appropriate graphical representation is used. You can select
your own point of view by selecting the reference arrow system
(load or generator) in the settings of the measurement.
Used symbols
For defining a measurement uniquely, a short description (e.g. U
Some measurements need further information, which is given by one of the following symbols or a combination
of these symbols:
Mean-value
Mean-value trend
Bimetal function (current)
Energy quadrants I+IV
Energy quadrants II+III
Energy quadrants I+II
Energy quadrants III+IV
I, II, III,
Quadrants
IV
Examples
PQ3K: Meters with tariff and quadrant
information
P10 Rev A
PQ5K: User mean values, last value
Device handbook LINAX PQ3000-PQ5000
) and a unit (e.g. V) are often not sufficient.
1N
Σ HT
Meter (high tariff)
Σ LT
Meter (low tariff)
Maximum value
Minimum value
TRMS
True root-mean-square value
Root-mean square value (e.g.
RMS
fundamental or harmonic content only)
(H1)
Fundamental component only
ø
Average (of RMS values)
PQ5K: User mean values, trend
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