values, the IED must be restarted in some way. Either manually or
by changing some other parameter at the same time.
The following general settings can be set for the Phase current measur
ement
(CMMXU):
IAmpCompY: Amplitude compensation to calibrate current measurements at Y% of
Ir, where Y is equal to 5, 30 or 100.
IAngCompY: Angle compensation to calibrate angle measurements at Y% of Ir,
where Y is equal to 5, 30 or 100.
MeasurementType: This default setting is DFT, which gives fundamental frequency
amplitude and angle. It can be set as RMS, if true RMS value over one cycle is
required.
The following general settings can be set for the Phase-phase voltage
measurement (VMMXU):
UAmpComp100: Amplitude compensation to calibrate voltage measurements at
100% of Ur.
MeasurementType: This default setting is DFT, which gives fundamental frequency
amplitude and angle. It can be set as RMS, if true RMS value over one cycle is
required.
The following general settings can be set for all monitored quantities included in
the functions (CVMMXN, CMMXU, VMMXU, CMSQI, VMSQI, VNMMXU) X
in setting names below equals S, P, Q, PF, F, IL1-2, UL1-2, UL12, I1, 2I0, U1 or
2U0.
Xmin: Minimum value for analog signal X set directly in applicable measuring
unit.
Xmax: Maximum value for analog signal X.
XZeroDb: Zero point clamping. A signal value less than XZeroDb is forced to zero.
Observe the related zero point clamping settings in Setting group N for
CVMMXN. If measured value is below 5% of UBase and/or 5% of IBase
calculated S, P, Q and PF will be zero and these settings will override XZeroDb.
XRepTyp: Reporting type. Cyclic (Cyclic), amplitude deadband (Dead band) or
integral deadband (Int deadband). The reporting interval is controlled by the
parameter XDbRepInt.
XDbRepInt: Reporting deadband setting. Cyclic reporting is the setting value and is
reporting interval in seconds. Amplitude deadband is the setting value in % of
measuring range. Integral deadband setting is the integral area, that is, measured
value in % of measuring range multiplied by the time between two measured
values.
1MRK 506 375-UEN A Section 15
Monitoring
Railway application RER670 2.2 IEC 383
Application manual
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