Micom P631, Техническое руководство

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3.12.3 Operating Data Measurement
The P631 has an operating data measurement function for the display of currents
and voltages measured as well as quantities derived from these measured
values. For the display of measured values, set lower thresholds need to be
exceeded, to avoid fluctuating small values from noise. If these lower thresholds
are not exceeded, the value
Not measured is displayed. The following measured
variables are displayed:
●
Phase currents of all three phases of both ends of the transformer
●
Maximum phase current of each end of the transformer
●
Minimum phase current of each end of the transformer
●
Delayed and stored maximum phase current of each end of the transformer
●
Positive- and negative-sequence current measured values of each end of
the transformer
●
Current I
N
derived by the P631 from the sum of the phase currents for each
end of the transformer
●
Current I
Y
measured by the P631 at transformer -Tx4 (x: 1, 2 or 3)
●
Voltage
●
Frequency
●
Angle between the phase currents for a given end of the transformer
●
Angle between the currents of the same phase between two ends of the
transformer
●
Angle between derived IN and the current measured at transformer -Tx4 (x:
1, 2 or 3)
The measured data are updated at 1 s intervals. Updating is interrupted if a
general starting state occurs or if the self-monitoring function detects a hardware
fault.
3 Operation
P631
P631/EN M/R-11-C // P631-310-650 3-67