Permanent Fault - ABB REC 561 User Manual

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Version 1.0-00

2.3.11Permanent fault

2.3.12More details about
reclosing programs
Auto-reclosing - Single- and/or
three-phase
After the reclaim time, the AR state control resets to the original rest state,
with AR01-SETON = 1, AR01-READY = 1 and AR01-P1PH = 1 outputs
(depending on the selected program). The other outputs are = 0.
After reclosing, a new trip is made and a new AR01-START or AR01-
TRSOTF signal appears, which means Trip Int. into the logic. It acti-
vates AR01-UNSUC (Reclosing unsuccessful). The timers for the 1, t1S
and t1 reclosing shot cannot be started (Fig. 5).
Depending on the setting of the parameter PulseCut, the closing command
may be shortened at the second tripping command.
After time-out of the reclaim timer, the function resets, but the breaker
remains open (AR01-CBCLOSED = 0, AR01-CBREADY = 1), meaning
that the reclosing function is not ready for a new reclosing function. See
Fig. 3 and Fig. 8.
3ph
3-phase, single-shot reclosing.
The output AR01-P3PH is always high (=1).
A tripping operation is made as a three-phase trip at all fault types.
The reclosing is as a three-phase reclosing in program 1/3ph, described
earlier.
2*3ph
3-phase + 3-phase, two-shot reclosing.
The operation is similar to that in program 3ph, but at a tripping after the
first reclosing shot, a second reclosing shot is made.
3*3ph and 4*3ph
They are as the 2-shot reclosing program 2*3ph, but 3 or 4 shots are
made.
1ph
1-phase, single-shot reclosing.
At 1-phase tripping, the operation is as described in program 1/3ph. At
receipt of the three-phase trip signal AR01-TPTRIP, the reclosing is inter-
rupted and blocked for the tInhibit set inhibit time.
1ph + 3ph
1-phase+ 3-phase two-shot reclosing, or 3-phase single-shot reclosing.
For a multi-phase fault and a three-phase tripping, the operation is as in
program 1/3ph, one reclosing shot is made.
But at a single-phase fault and a single-phase tripping and reclosing, a
second three-phase reclosing with a longer delay is made. Three separate
AR open time timers are used, t1S or t1 for the first shot, and t2 for the
second shot (1-300 s).
Fig. 9 illustrates the sequence.
1MRK 580 170-XEN
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