PreFaultRecT
TimeLimit
PostFaultRecT
en05000487.vsd
1 2 3
Trig point
IEC05000487 V1 EN-US
Figure 563: The recording times definition
PreFaultRecT, 1 Pre-fault or pre-trigger recording time. The time before the fault including the trip 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.
Analog signals
M12155-160 v7
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).
1MRK 502 066-UUS B Section 16
Monitoring
1085
Technical manual
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