Post Retrigger; Technical Data - Hitachi Relion 650 Series Technical Manual

Section 12
Monitoring
12.4.6.12

Post Retrigger

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 = On) during
the post-fault time. In this case a new, complete recording will start and, during a period, run in
parallel with the initial recording.
When the retrig parameter is disabled (PostRetrig = Off), a new recording will not start 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.
12.4.7

Technical data

Table 215: DRPRDRE technical data
Function
Current recording
Voltage recording
Pre-fault time
Post-fault time
Limit time
Maximum number of recordings
Time tagging resolution
Maximum number of analog inputs
Maximum number of binary inputs
Maximum number of phasors in the Trip Value
recorder per recording
Maximum number of indications in a disturbance
report
Maximum number of events in the Event recording
per recording
Maximum number of events in the Event list
Maximum total recording time (3.4 s recording time
and maximum number of channels, typical value)
Sampling rate
Recording bandwidth
208
Range or value
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(0.05–3.00) s
(0.1–10.0) s
(0.5–8.0) s
200, first in - first out
0.25 ms
30 + 10 (external + internally
derived)
96
30
96
150
1000, first in - first out
70 seconds (200 recordings) at
50 Hz, 50 seconds (200
recordings) at 60 Hz
4.0 kHz at 50 Hz
4.8 kHz at 60 Hz
(5-300) Hz
1MRK 511 557-UEN Rev. A
D0E7543T201305151403 v1
D0E7590T201305151403 v2
Accuracy
± 1,0% of I at I ≤ I
r r
± 1,0% of I at I > Ir
± 1,0% of U at U ≤ U
r r
± 1,0% of U at U > U
r
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See time synchronization
technical data
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Technical Manual