This method of checking the analog trigger conditions gives a function which is insensitive to DC
offset in the signal. The trip time for this initiation is typically in the range of one cycle, 16 2/3 ms
for a 60 Hz network.
All under/over trig signal information is available on the local HMI and PCM600.
Post Retrigger
M12155-173 v6
Disturbance report function does not automatically respond to any new trig condition during a
recording, after all signals set as trigger signals have been reset. However, under certain
circumstances the fault condition may reoccur during the post-fault recording, for instance by
automatic reclosing to a still faulty power line.
In order to capture the new disturbance it is possible to allow retriggering (
PostRetrig
=
Enabled
)
during the post-fault time. In this case a new, complete recording will pickup and, during a period,
run in parallel with the initial recording.
When the retrig parameter is disabled (
PostRetrig
=
Disabled
), a new recording will not pickup
until the post-fault (
PostFaultrecT
or
TimeLimit
) period is terminated. If a new trig occurs during
the post-fault period and lasts longer than the proceeding recording a new complete recording
will be started.
Disturbance report function can handle maximum 3 simultaneous disturbance recordings.
16.6.8 Technical data
M12760-1 v9.1.1
Table 782: DRPRDRE technical data
Function Range or value Accuracy
Pre-fault time (0.05–9.90) s -
Post-fault time (0.1–10.0) s -
Limit time (0.5–10.0) s -
Maximum number of recordings 100, first in - first out -
Time tagging resolution 1 ms See table 968
Maximum number of analog inputs 30 + 10 (external + internally
derived)
-
Maximum number of binary inputs 128 -
Maximum number of phasors in the Trip Value
recorder per recording
30 -
Maximum number of indications in a disturbance
report
96 -
Maximum number of events in the Event recording per
recording
150 -
Maximum number of events in the Sequence of events 1000, first in - first out -
Maximum total recording time (3.4 s recording time
and maximum number of channels, typical value)
340 seconds (100 recordings)
at 50 Hz, 280 seconds (80
recordings) at 60 Hz
-
Sampling rate 1 kHz at 50 Hz
1.2 kHz at 60 Hz
-
Recording bandwidth (5-300) Hz -
Section 16 1MRK 502 066-UUS B
Monitoring
1088
Technical manual
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