ABB Relion 670 Series RES670, Technical Manual

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• Locally by means of the local HMI
• Remotely using the monitoring tool within PCM600 or over the station bus
• Internally by connecting the analog output signals to the Disturbance Report function
Phase angle reference
All phase angles are presented in relation to a defined reference channel. The General
setting parameter
PhaseAngleRef defines the reference.
Zero point clamping
Measured value below zero point clamping limit is forced to zero. This allows the noise
in the input signal to be ignored. The zero point clamping limit is a general setting
(
XZeroDb where X equals S, P, Q, PF, V, I, F, IA, IB, IC, VA, VB, VC, VAB, VBC,
VCA, I1, I2, 3I0, V1, V2 or 3V0). Observe that this measurement supervision zero point
clamping might be overridden by the zero point clamping used for the measurement
values within CVMMXN.
Continuous monitoring of the measured quantity
Users can continuously monitor the measured quantity available in the function block by
means of four defined operating thresholds, see figure
187 . The monitoring has two
different modes of operating:
• Overfunction, when the measured current exceeds the High limit ( XHiLim ) or High-
high limit ( XHiHiLim ) pre-set values
• Underfunction, when the measured current decreases under the Low limit ( XLowLim )
or Low-low limit ( XLowLowLim ) pre-set values.
X_RANGE is illustrated in figure 187 .
Section 16
1MRK 511 365-UUS A
Monitoring
506 Phasor measurement unit RES670 2.1 ANSI
Technical manual