Disturbance Recorder; Time Tagging; Recording Times - ABB RET650 Technical Manual
Relion 650 series
transformer protection
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- Applications manual (392 pages) ,
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1MRK 504 135-UEN A
14.4.6.6
14.4.6.7
14.4.6.8
Technical manual
Disturbance recorder
Disturbance recorder records analog and binary signal data before, during and after
the fault, see Disturbance recorder section for detailed information.
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:
PreFaultrecT + tFault + PostFaultrecT or PreFaultrecT + TimeLimit , depending on which
tRecording =
criterion stops the current disturbance recording
Trig point
PreFaultRecT
1
IEC05000487 V1 EN
Figure 206:
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
time).
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
PostFaultRecT
2
PreFaultRecT to set this time.
TimeLimit to set this time.
Section 14
Monitoring
3
en05000487.vsd
TimeLimit the limit
PostFaultRecT to set this time.
469
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