Siemens SICAM Q80 System Manual page 34

34 SICAM Q80 7KG8080
5.1.2.2.4 Voltage connection
Click on the list box Voltage to open it. You can choose from three possible configurations of the inputs U1 to U3:
Four-wire system (Star)
Three-wire system 3xU (Delta)
Three-wire system 2xU (Open delta)
Single line P-COM
The selected configuration is illustrated in a graphic.
Circuit 4-wire system
"PQ Values for"
o Calculation of the PQ-values for Phase-N or Phase-Phase. The voltage's harmonics and THD-value, as well
as the flicker values, are only calculated for this system.
o The respective mean, min and max voltage values, the curve plots and fault records can be calculated for
Phase-N and Phase-Phase in parallel. This is performed in accordance with the settings on the page
Supplementary parameters
o For a Phase-Phase system, no line power values are calculated.
"U calculate RMS value PN and PP"
o Calculation of the voltage RMS mean values in parallel for Phase-N and Phase-Phase.
Circuit 3-wire system 3xU 3xI
Power Quality Recorder SICAM Q80 7KG8080, System manual
E50417-H1076-C420-A2, Release 12.01.2015
Curcuit 4-wire system with current measurement
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3-wire system 3xU 3xI