Recording Channels - Siemens SIMEAS R-PMU Manual

7.2.2.1 Recording Channels

A fault record that has been recorded by the Transient Phasor Recorder contains signal tracks
for AC values, phase angles, symmetrical components, active and reactive power, frequencies,
process, binary signals, and quality tracks. Because of a parameterizable recording interval, the
frequency and the phasor are recorded every 1 to 5 nominal cycles for AC values. The phasors
are then used to calculate the AC and the derived values. The recorded phasors, rms values,
triggers and derived values are determined based on the fundamental component of the signal
only.
The same recording interval of 1 to 5 nominal cycles is used for process values, however, a
mean value is calculated over the complete recording interval.
Note
As the Transient Analog Recorder uses the fundamental component of the measured signal
to record total rms values, the Transient Phasor Recorder can display a lower fundamental
component rms value for current and voltage in the event of signals with a high harmonic
component.
Analogously to the Transient Analog Recorder, the binary changes are recorded with a
resolution of 1 kHz and a maximum of 250 signal changes per second and DAU.
All channels of the active DAUs are always recorded, even if there is no limit value violation for
the channel.
Tables 7-15 and 7-16 give an overview of the recorded values of the DAUs.
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
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7.2 Fault Recorders
77