Siemens SIMEAS Q80 Operating Instruction page 107

9.4.7 Parameterization
Note
9.4.7.1 Signal processing
A Digital Signal Processor (DSP) calculates most network quality attributes already while the measurement is in
progress.
The results returned are not only simple aggregation values but also data-reduced curve plots and short segment of
the waveform (instantaneous value). These data values are very small compared to the input data and contain the
most important information for evaluating the network quality.
The calculation procedures used are FFT, digital filters and class counting systems.
The following table shows which supply voltage properties and other physical quantities can be measured using
SIMEAS Q80 7KG8080:
Supply network properties measured
Feature
Slow fluctuations of RMS-values
Rapid fluctuation of RMS-values
Harmonics, interharmonics, THD, signal
voltages
Asymmetry
Form of oscillations, transients
Frequency
Signal voltage in the network
Power
How to set the parameters is described in the SIMEAS Q80 7KG8080 system manual(order #
E50417-H1076-C420-A2).
Aggregation, maximum, minimum
Flicker as per IEC 61000-4-15, level fluctuations in terms of time and
amplitude (voltage dips, -outages, surges)
Mean values for all harmonics up to the 50th harmonic
Mean values for definable frequencies of 10 Hz - 3 kHz
Aggregation of positive-, negative- and zero-sequence systems
Recording of instantaneous values at 10kHz upon release of trigger
Aggregation
Aggregation, fluctuations, amplitude of the modulated signal
Active power, apparent power, reactive power, power factor for all
harmonics
Assembly, Commissioning, Parameterization
Description
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 09.02.2011
E-31