Siemens Sicam P855 7KG85 Series Device Manual page 34

4 Measurands and Recording
4.1 Measuring and Recording System
Flicker (Only SICAM P855)
• The short-term flicker value Pst and long-term flicker value Plt are determined for phase-to-ground volt-
ages and delta voltages. The flicker measurement is performed according to EN 61000-4-15.
• The flicker measurement is performed on all 3 voltage channels.
• Flickers appear with a frequency from 0.005 to 35 Hz. The instantaneous flicker value is displayed in per-
ceptibility units P.
• Short-term flicker value Pst

determined over 10 min (short-term flicker), fixed
• Long-term flicker value Plt

over 2 h (12 Pst values), fixed
• Perceptibility Pinst
34 SICAM P850/P855, 7KG85xx, Device Manual
E50417-H1040-C482-A6, Edition 10.2018