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models 100 and 400, is a residual current for EF in models 110 and 410, and is a current for SEF
fed from core balance CT in models 120 and 420.
3.4.2
Event Recording
The events shown are recorded with a 1 ms resolution time-tag when the status changes. The user
can set a maximum of 128 recording items, and their status change mode. The event items can be
assigned to a signal number in the signal list. The status change mode is set to "On" (only
recording On transitions) or "On/Off"(recording both On and Off transitions) mode by setting.
The "On/Off" mode events are specified by "Bi-trigger events" setting. If the "Bi-trigger events"
is set to "100", No.1 to 100 events are "On/Off" mode and No.101 to 128 events are "On" mode.
The name of an event can be set by RSM100. Maximum 22 characters can be set, but the LCD
displays only 11 characters. Therefore, it is recommended the maximum 11 characters are set. The
set name can be viewed on the Set.(view) screen.
The elements necessary for event recording and their setting ranges are shown in the table below.
The default setting of event record is shown in Appendix G.
Element
BITRN
EV1 – EV128
Up to 480 records can be stored. If an additional event occurs when 480 records have been stored,
the oldest event record is deleted and the latest event record is then stored.
3.4.3
Disturbance Recording
Disturbance recording is started when the overcurrent starter element operates or a tripping
command is initiated. Further, disturbance recording is started when a start command by PLC is
initiated. User can configure four disturbance record triggers (Signal No.:2632 to 2635) by PLC.
The records include four local analogue data (I a , I b , I c , I e ), three local analogue data (I aL , I bL ,
I cL ) sent to remote terminal, three remote analogue data (I aR , I bR , I cR ) sent from remote
terminal, 32 binary signals and the dates and times at which recording started. Any binary signal
shown in Appendix B can be assigned by the binary signal setting of disturbance record.
Note: The current data I aR , I bR , I cR is for reference. If the detail of remote current data is required,
the local current data stored at the remote terminal relay should be checked.
The LCD display only shows the dates and times of disturbance records stored. Details can be
displayed on a PC. For how to obtain disturbance records on the PC, see the PC software
instruction manual.
The pre-fault recording time is fixed at 0.3s and post-fault recording time can be set between 0.1
and 3.0s.
The number of records stored depends on the post-fault recording time. The approximate
relationship between the post-fault recording time and the number of records stored is shown in
Table 3.4.2.
Note: If the recording time setting is changed, the records stored so far are deleted.
Range
Step
0 - 128
1
0 - 3071
⎯
Default
Remarks
100
Number of bi-trigger(on/off) events
Assign the signal number
⎯
67
6 F 2 S 0 8 2 8
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