Landis+Gyr ZFQ202, User Manual

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Gyr H 71 0200 0215 f en - ZMQ202 / ZFQ202 - User Manual
20/88 Description of Unit
Apparent energy export -S Sum / Phases Sum *
Apparent energy in quadrant I +Si Sum / Phases Sum *
Apparent energy in quadrant II +Sc Sum / Phases Sum *
Apparent energy in quadrant III –Si Sum / Phases Sum *
Apparent energy in quadrant IV –Sc Sum / Phases Sum *
Energy flow of active energy EFA Sum Sum
Energy flow of reactive energy EFR Sum Sum
* Due to the different type of measurement of the Aron circuit, data for
the individual phases are not provided by the ZFQ.
2.4.2 Calculation of Measured Quantities
By scanning the raw data of active energy A and reactive energy R every
0.2 seconds, energy components (Ws or vars) with varying energy
magnitudes are produced at fixed intervals.
The microprocessor calculates the total active energy A and the
total active energy export -A by summating the raw data of active energy
A1, A2 and A3.
Measured quantities
Raw data of
active energy
Σ
A1
A3
A2
+A (Import)
-A (Export)
The microprocessor calculates the total reactive energy R and the
total reactive energy export -R by summating the raw data of reactive
energy R1, R2 and R3.
Measured quantities
Raw data of
reactive energy
Σ
R1
R3
R2
+R (Import)
-R (Export)
These energy components are scaled by the microprocessor corresponding
to the meter constant (primary data) and are then available as measured
quantities. The measured quantities can be selected by parameter setting
and their measured values are fed directly to the registers to record the
energy.
Active energy
Reactive energy