• name — parameter name same as HMI
• value — actual parameter value
• unit — parameter unit
The changed_settings attribute tag is similar to the settings section. It contains
functions which have changes in parameter value or runtime status or IEC61850
behavior when compared with trigger and post-processing settings values.
Time tagging
M12155-194 v1
The IED has a built-in real-time calendar and clock. This function is used for all
time tagging within the disturbance report
Recording times
M12155-99 v5
Disturbance report DRPRDRE records information about a disturbance during a
settable time frame. The recording times are valid for the whole disturbance report.
Disturbance recorder (DR), event recorder (ER) and indication function register
disturbance data and events during tRecording, the total recording time.
The total recording time, tRecording, of a recorded disturbance is:
tRecording =
PreFaultrecT
+ tFault +
PostFaultrecT
or
PreFaultrecT
+
TimeLimit
, depending on
which criterion stops the current disturbance recording
PreFaultRecT
TimeLimit
PostFaultRecT
en05000487.vsd
1 2 3
Trig point
IEC05000487 V1 EN-US
Figure 225: The recording times definition
PreFaultRecT, 1
Pre-fault or pre-trigger recording time. The time before the fault including the
operate time of the trigger. Use the setting
PreFaultRecT
to set this time.
tFault, 2 Fault time of the recording. The fault time cannot be set. It continues as long as
any valid trigger condition, binary or analog, persists (unless limited by
TimeLimit
the limit time).
PostFaultRecT, 3
Post fault recording time. The time the disturbance recording continues after all
activated triggers are reset. Use the setting
PostFaultRecT
to set this time.
TimeLimit Limit time. The maximum allowed recording time after the disturbance recording
was triggered. The limit time is used to eliminate the consequences of a trigger
that does not reset within a reasonable time interval. It limits the maximum
recording time of a recording and prevents subsequent overwriting of already
stored disturbances. Use the setting
TimeLimit
to set this time.
Section 11 1MRK 505 384-UEN A
Monitoring
474 Breaker protection REQ650 2.2 IEC
Technical manual
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