ABB Relion REC670, Applications Manual

Page: 542 / 658

17.6.3.1 Recording times
M12179-88 v5
Prefault recording time ( PreFaultRecT ) is the recording time before the starting point
of the disturbance. The setting should be at least 0.1 s to ensure enough samples for the
estimation of pre-fault values in the Trip value recorder (TVR) function.
Postfault recording time ( PostFaultRecT ) is the maximum recording time after the
disappearance of the trig-signal (does not influence the Trip value recorder (TVR)
function).
Recording time limit ( TimeLimit ) is the maximum recording time after trig. The
parameter limits the recording time if some trigging condition (fault-time) is very long
or permanently set (does not influence the Trip value recorder (TVR) function).
Operation in test mode
M12179-492 v4
If the IED is in test mode and OpModeTest = Disabled . Disturbance report function
does not save any recordings and no LED information is displayed.
If the IED is in test mode and OpModeTest = Enabled . Disturbance report function
works in normal mode and the status is indicated in the saved recording.
Post Retrigger
M12155-173 v7
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 a maximum of 3 simultaneous disturbance
recordings.
17.6.3.2 Binary input signals
M12179-90 v9
Up to 352 binary signals can be selected among internal logical and binary input
signals. The configuration tool is used to configure the signals.
Section 17
1MRK 511 401-UUS A
Monitoring
536 Bay control REC670 2.2 ANSI
Application manual