ABB Relion 650 Series Technical Manual page 464

Section 13
Monitoring
13.6.6.8 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
13.6.6.9 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
1
IEC05000487 V1 EN-US
Figure 242: The recording times definition
PreFaultRecT, 1
tFault, 2
PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all activated
TimeLimit
13.6.6.10 Analog signals
Up to 40 analog signals can be selected for recording by the Disturbance recorder and triggering
of the Disturbance report function. Out of these 40, 30 are reserved for external analog signals
from analog input modules via preprocessing function blocks (SMAI) and summation block
458
PreFaultrecT + tFault + PostFaultrecT or PreFaultrecT + TimeLimit , depending on
which criterion stops the current disturbance recording
Trig point
2
Pre-fault or pre-trigger recording time. The time before the fault including the operate time of
the trigger. Use the setting
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
triggers are reset. Use the setting
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
time.
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TimeLimit
PostFaultRecT
3
en05000487.vsd
PreFaultRecT to set this time.
TimeLimit the limit time).
PostFaultRecT to set this time.
1MRK 506 326-UUS B
M12155-194 v1
M12155-99 v4
TimeLimit to set this
M12155-160 v6
Line distance protection REL650
Technical manual