Measurement Modes - ABB RELION 620 Series Technical Manual

Section 4
Protection functions
4.2.2.6
384
A070443 V3 EN
Figure 185: Extended operation area in directional earth-fault protection

Measurement modes

The function operates on three alternative measurement modes: "RMS", "DFT" and
"Peak-to-Peak". The measurement mode is selected with the Measurement mode
setting.
Table 405: Measurement modes supported by DEFxPDEF stages
Measurement mode DEFLPDEF
RMS
DFT
Peak-to-Peak
For a detailed description of the measurement modes, see the
Measurement modes
DEFHPDEF
x
x
x
section in this manual.
1MRS757644 F
x
x
x
620 series
Technical Manual