ABB Relion 670 Series Applications Manual page 345

1MRK 511 401-UEN Rev. K
THOLHOLD
Signal "Thermal overload protection holding back auto reclosing". It can be connected to a
thermal overload protection trip signal which resets only when the thermal content has fallen
to an acceptable level, for example, 70%. As long as the signal is high, indicating that the line is
hot, the auto reclosing is held back. When the signal resets, a reclosing cycle will continue.
Observe that this have a considerable delay. Input can also be used for other purposes if for
some reason the auto reclosing shot needs to be halted.
TR2P and TR3P
Signals for two-phase and three-phase trip. They are usually connected to the corresponding
output of the trip function block. They control the choice of dead time and the auto reclosing
cycle according to the selected program. Signal TR2P needs to be connected only if the trip
function block has been selected to give 1ph/2ph/3ph trip and an auto reclosing cycle with
two phase reclosing is foreseen.
TRSOTF
This is the signal "Trip by Switch Onto Fault". It is usually connected to the "switch onto fault"
output of line protection if multi-shot auto reclosing attempts are used. The input will start
the shots two to five.
WAIT
Used to hold back reclosing of the "low priority unit" during sequential auto reclosing. See
"Recommendation for multi-breaker arrangement" below. The signal is activated from output
WFMASTER on the second breaker auto recloser in multi-breaker arrangements.
ZONESTEP
ZONESTEP input is used when coordination between local auto reclosers and down
The
stream auto reclosers is needed. When this input is activated the auto recloser increases its
actual shot number by one and enters "reclaim time" status. If a start is received during this
reclaim time the auto recloser is proceeding as usual but with the dead time for the increased
shot number. Every new increase of the shot number needs a new activation of the
input. This functionality is controlled by the setting
Recommendations for output signals
Please see Figure 151, Figure
examples.
1PT1 and 2PT1
Indicates that single-phase or two-phase auto reclosing is in progress. It is used to temporarily
block an earth-fault and/or pole disagreement function during the single-phase or two-phase
open interval.
3PT1, 3PT2, 3PT3, 3PT4 and 3PT5
Indicates that three-phase auto reclosing shots one to five are in progress. The signals can be
used as an indication of progress or for own logic.
ABORTED
ABORTED output indicates that the auto recloser is inhibited while it is in one of the
The
following internal states:
• inProgress: auto recloser is started and dead time is in progress
• reclaimTimeStarted: the circuit breaker closing command has started the reclaim timer
• wait: an auto recloser, acting as slave, is waiting for a release from the master to proceed
with its own reclosing sequence
Bay control REC670
Application manual
152 and Figure
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ZoneSeqCoord .
153 and default factory configuration for
Section 15
Control
ZONESTEP
M12399-46 v9
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