Siemens SIPROTEC 5 Manual page 242

Fault Recorder
7.2 Function-Group Type Recorder
[loslowsc-161012-01.tif, 1, en_US]
Figure 7-27
The slow-scan recorder can record fault records up to a length of 90 min. Measured values are acquired based
on half periods and averaged over a configurable averaging time. The averaging time can be set from 1 period
to 3000 periods. Binary changes are recorded at a sampling rate of 4 kHz and a resolution of 1 ms.
The flash memory of the device is automatically updated for every recording. If the flash memory is full, the
oldest recording is automatically overwritten when the device records a new fault record.
The pre-trigger and post-trigger time is set for all recorders. The recording starts as soon as the recorder is
triggered. The trip signal (trigger cause) can be again inactive during the recording (trigger clears). In this
case, the fault record is limited by the set parameters of the post-trigger time.
4 different possible triggers are available for the slow-scan recorder:
•
Trigger from trigger routing
•
Manual trigger start
•
External trigger start
•
Triggers on indications
•
Trigger via IEC 61850 Controllable (
You will find additional information about the Trigger via IEC 61850 Controllable in chapters
7.3.3.4 Trigger Start Using Logic Block Chart
NOTE
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Consider that the maximum record duration and the post-trigger time at high averaging times can be
shorter than expected, since these parameters act as a multiple of the averaging time.
EXAMPLE
Averaging time: 3000 periods (equal to 60 seconds)
Maximum record duration: 200 seconds
Resulting fault record length: 180 seconds
NOTE
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For all trigger types except
time and Maximum record time apply.
For the trigger type
Manual Start
Routing of the binary input
the parameter Manual record time.
242
Logic Diagram of the Slow-Scan Recorder Function
Start record )
>Manual start , the parameters Pre-trigger time , Post-trigger
>Manual start the parameter Manual record time applies.
>Manual start leads to a recording of fixed length. The length is set based on
and 7.3.3.3 GOOSE Trigger
C53000-G5040-C018-5, Edition 11.2017
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SIPROTEC 5, Fault Recorder, Manual