Siemens 6MD85, Manual

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Parameter Value Description
with trip
If at least one protection function issues an operate indication during the
record time, any fault recording that has been started will be saved.
Parameter: Maximum record time
•
Default setting
(_:2761:111) Maximum record time
=
5.00 s
With the
Maximum record time
parameter, you configure the maximum record duration for an individual
fault recording. When the time configured expires, an ongoing fault recording is canceled. This parameter
merely limits the duration of the fault recording. It does not affect the logging of faults in the fault log.
Parameter: Pre-trigger time
•
Recommended setting value
(_:2761:112) Pre-trigger time
=
0.50 s
With the
Pre-trigger time
parameter, you configure the pre-trigger time for an individual fault recording.
The set pre-trigger time is prepended to the actual recording criterion for the fault recording.
Parameter: Post-trigger time
•
Recommended setting value
(_:2761:113) Post-trigger time
=
0.50 s
With the
Post-trigger time
parameter, you configure the post-trigger time for an individual fault
recording. The post-trigger time that has been configured is added to the actual recording criterion for the
fault recording after the dropout.
The following table shows how the setting range changes for the
Post-trigger time
parameter
depending on the
Sampling frequency
.
Sampling Frequency Setting Range for the
Post-trigger time
Parameter
8 kHz 0.05 s to 4 s
4 kHz 0.05 s to 8 s
2 kHz 0.05 s to 16 s
1 kHz 0.05 s to 24 s
Parameter: Manual record time
•
Recommended setting value
(_:2761:116) Manual record time
=
0.50 s
With the
Manual record time
parameter, you set the length of a recording if the fault recording is acti-
vated dynamically (edge-triggered) via a separately configured input signal
>Manual start
.
In this case, pre-trigger and post-trigger times do not take effect.
Parameter: Sampling frequency
•
Recommended setting value
(_:2761:140) Sampling frequency
=
8 kHz
With the
Sampling frequency
parameter, you define the sampling frequency of fault records that you
want to download via DIGSI 5. Possible setting values are 8 kHz, 4 kHz, 2 kHz, and 1 kHz.
Parameter: Sampl. freq. IEC61850 rec.
•
Recommended setting value
(_:2761:141) Sampl. freq. IEC61850 rec.
=
8 kHz
With the
Sampl. freq. IEC61850 rec.
parameter, you define the sampling frequency of the fault record
that you want to download using the IEC 61850 communication protocol. Possible setting values are 8 kHz, 4
kHz, 2 kHz, and 1 kHz.
You cannot set the
Sampl. freq. IEC61850 rec.
parameter to be greater than the maximum setting
value of the
Sampling frequency
parameter.
If the size of the COMTRADE file exceeds the maximum permissible storage capacity of the device, the original
recording is truncated. The truncated data are discarded.
System Functions
3.4 Fault Recording
SIPROTEC 5, High-Voltage Bay Controller, Manual 95
C53000-G5040-C015-9, Edition 11.2017