Time Tagging - ABB Relion Technical Manual

1MRK 502 048-UUS A
14.4.6.7
14.4.6.8
Technical manual

Time tagging

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
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, event recorder 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
Trig point
PreFaultRecT
1
IEC05000487 V1 EN
Figure 255: 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
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
PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all activated
triggers are reset. Use the setting
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.
TimeLimit
PostFaultRecT
2
PreFaultRecT to set this time.
PostFaultRecT to set this time.
Section 14
Monitoring
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en05000487.vsd
TimeLimit the limit time).
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