ABB REB650, Техническое руководство

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12.1.7.5 Monitored data
Table 207: VNMMXU Monitored data
Name Type Values (Range) Unit Description
V_A REAL - kV V_A Amplitude, magnitude of
reported value
VA_ANGL REAL - deg V_A Angle, magnitude of
reported value
V_B REAL - kV V_B Amplitude, magnitude of
reported value
VB_ANGL REAL - deg V_B Angle, magnitude of
reported value
V_C REAL - kV V_C Amplitude, magnitude of
reported value
VC_ANGL REAL - deg VC Angle, magnitude of
reported value
12.1.8 Operation principle
12.1.8.1 Measurement supervision
The protection, control, and monitoring IEDs have functionality to measure and further
process information for currents and voltages obtained from the pre-processing blocks.
The number of processed alternate measuring quantities depends on the type of IED
and built-in options.
The information on measured quantities is available for the user at different locations:
• 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. The PhaseAngleRef is set in
local HMI under: Configuration/Analog modules/Reference channel service values.
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
1MRK 505 277-UUS C
Section 12
Monitoring
237
Technical Manual