SMY133-SMY134-SMP133 Operating Manual
4.2.5 Electricity meter
In this data group you can check active & reactive energies registered in all quadrants.
Next, maximum values of average three-phase active power including time stamps – so called
maximum demands. For details see the chapter
Embedded Electricity Meter
.
Furthermore, there is the pulse counters actual state table. For detailed description see the chapter
I/
O Actual Data Presentation
.
4.2.6 Oscillograms
At this group there are actual waveshapes of all measured voltages and currents. With the
and
you can toggle between votage and current screen.
They are also displayed effective values of the voltages/currents and maximum of their peak values
Up/Ap.
4.2.7 Phasor Diagram
Diagram of actual voltage and current fundamental harmonic phasors.
Voltage phasor angles
φ
are absolute, current phasor angles are
relative to appropriate voltage phasor (
Δφ
).
Phase order can be checked here too (indicated as
1-2-3
or
1-3-2
).
4.2.8 Harmonics & THDs
Actual harmonic components of all voltage and current signals in graphic ( histogram ) format. They
are expressed in per cent of fundamental harmonic component.
Only odd components from the 3
rd
to 25
th
are displayed; for full spectrum of harmonics use ENVIS-
DAQ program.
In the upper right corner, there are values of THD of individual phases.
17
Fig. 4.4 : Voltage Waves
Fig. 4.5 : Current Waves
Fig. 4.6 : Phasor Diagram
Fig. 4.7 : Voltage Harmonics
Fig. 4.8 : Current Harmonics
