Siemens SICAM Q80 System Manual page 52

52 SICAM Q80 7KG8080
5.1.2.3.3 Monitoring of frequencies
You can select up to 10 frequencies which are to be captured in addition to the 50 harmonics included standard. Click
the mouse on a number to enter the frequency.
Specifying the frequency monitoring for ripple control signals
The permitted frequency range is between 10 Hz and 3 kHz. Thus it is possible to both monitor interharmonics below
50 Hz as well as signal frequencies in this range.
5.1.2.3.4 Power
The total power of 3-wire systems (Delta) is calculated according to DIN 40110 or IEEE 1459/3-Wattmeter method
(default).
There are multiple available methods for calculating the total power of 4-wire (star) systems.
Total power:
Standard: DIN 40110
IEEE 1459/3-Watt-meter method: S
Reactive power
Using the variant standard IEEE 1459/3-Watt-meter method, the reactive power Q can be negative or positive.
4 Quadrant Measurement:
Power Quality Recorder SICAM Q80 7KG8080, System manual
E50417-H1076-C420-A2, Release 12.01.2015
Advanced "Power / Energy" setting
= S + S + S
S 1 2 3