ABB Relion 670 Series Applications Manual page 249

1MRK 511 407-UUS Rev. J
XRepTyp : cyclic ), the setting value reporting interval is in seconds. Magnitude deadband is the
(
setting value in m% of measuring range. Integral deadband setting is the integral area, that is,
measured value in m% of measuring range multiplied by the time between two measured values.
XHiHiLim : High-high limit. Set as % of YBase (Y is SBase for S,P,Q UBase for Voltage measurement
IBase for current measurement).
and
XHiLim : High limit. Set as % of YBase (Y is SBase for S,P,Q UBase for Voltage measurement and
IBase for current measurement).
XLowLim : Low limit. Set as % of YBase (Y is SBase for S,P,Q UBase for Voltage measurement and
IBase for current measurement).
XLowLowLim : Low-low limit. Set as % of YBase (Y is SBase for S,P,Q UBase for Voltage
measurement and
XLimHyst : Hysteresis value in % of range and is common for all limits.
All phase angles are presented in relation to defined reference channel. The parameter
PhaseAngleRef defines the reference.
Calibration curves
It is possible to calibrate the functions (CVMMXN, CMMXU, VMMXU and VNMMXU) to get class 0.5
presentations of currents, voltages and powers. This is accomplished by magnitude and angle
compensation at 5, 30 and 100% of rated current and voltage. The compensation curve will have
the characteristic for magnitude and angle compensation of currents as shown in figure
(example). The first phase will be used as reference channel and compared with the curve for
calculation of factors. The factors will then be used for all related channels.
Phasor measurement unit RES670
Application manual
IBase for current measurement).
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Section 16
Monitoring
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