Hitachi Relion 650 Series Technical Manual page 209

1MRK 511 557-UEN Rev. A
Analog signals
Binary signals
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Figure 101: Disturbance report functions and related function blocks
The whole disturbance report can contain information for a number of recordings, each with the data
coming from all the parts mentioned above. The event list function is working continuously,
independent of disturbance triggering, recording time, and so on. All information in the disturbance
report is stored in non-volatile flash memories. This implies that no information is lost in case of loss
of auxiliary power. Each report will get an identification number in the interval from 0-999.
Record no. N
General dist.
information
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Figure 102: Disturbance report structure
Up to 200 disturbance reports can be stored. If a new disturbance is to be recorded when the
memory is full, the oldest disturbance report is overwritten by the new one. The total recording
capacity for the disturbance recorder depends on sampling frequency, number of analog and binary
channels and recording time. In a 50 Hz system it is possible to record 200 where the maximum
recording time is 0.7 seconds. The memory limit does not affect the rest of the disturbance report
(Event list, Event recorder, Indications and Trip value recorder).
Technical Manual
A1-4RADR
A4RADR
B1-6RBDR
B6RBDR
Disturbance report
Record no. N+1
Trip
Indications
values
The maximum number of recordings depend on each recordings total recording time.
Long recording time will reduce the number of recordings to less than 200.
The IED flash disk should NOT be used to store any user files. This might cause
disturbance recordings to be deleted due to lack of disk space.
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Disturbance Report
DRPRDRE
Trip value rec
Disturbance
recorder
Event list
Event recorder
Indications
IEC09000337-2-en.vsd
Record no. N+100
Event Disturbance
recordings recording
Section 12
Monitoring
Event list
en05000161.vsd
203