Figure 65: Monitoring circuit quantities via Web interface
A Phasor angle for each phase of the selected circuit.
B Selected circuit to be monitored.
C Quantities related to the circuits being monitored.
Phasor angles measured and displayed are absolute angles referenced to the PPS signal provided by the
synchronization. When no sync signal is connected, the measured angles are referenced to Phase A of the
reference circuit.
Values are updated at the rate of 2 points per second, however, when two or more circuits are
simultaneously displayed, their time stamps may not be related to each other.
Note: The RPV311 has an autozero automatic feature, which is a slow filter that takes about 15 minutes to
filter the DC components of the reading signal and then subtracts it from the readings in order to locate the
correct position of the signal reference on the graph. The response of the filter is stored in the solid memory
with the purpose of turning this process faster for subsequent reboots on the device. This filter will not
interfere with the registering of the DC components generated by faults.
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