ABB RELION 670 Series Technical Manual page 1091

1MRK 502 066-UUS B
PreFaultRecT
1
IEC05000487 V1 EN-US
Figure 563: The recording times definition
PreFaultRecT, 1
tFault, 2
PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all activated
TimeLimit
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 (TRM) and line data communication module (LDCM) via preprocessing
function blocks (SMAI) and summation block (3PHSUM). The last 10 channels may be connected to
internally calculated analog signals available as function block output signals (mA input signals,
phase differential currents, bias currents and so on).
Technical manual
Trig point
2
Pre-fault or pre-trigger recording time. The time before the fault including the trip 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.
TimeLimit
PostFaultRecT
3
PreFaultRecT to set this time.
PostFaultRecT to set this time.
en05000487.vsd
TimeLimit the limit time).
TimeLimit to set this
Section 16
Monitoring
M12155-160 v7
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