ABB Relion 670 Series Applications Manual page 308

Section 14
Control
RI_HS, Initiate high-speed auto reclosing
It may be used when one wants to use two different dead times in different protection trip
operations. This input starts the dead time
input is without a synchronization check.
SYNC
This input is connected to the internal synchronism check function when required or to an external
device for synchronism. If neither internal nor external synchronism or energizing check is
required, it can be connected to a permanently high source, TRUE. The signal is required for three-
phase shots 1-5 to proceed (Note! Not the high-speed step).
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
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 1/2/3 pole 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 stream
The
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
is controlled by the setting
Recommendations for output signals
Please see Figure 122, Figure
1PT1 and 2PT1
Indicates that single-pole or two-pole auto reclosing is in progress. It is used to temporarily block
an ground-fault and/or pole disagreement function during the single-pole or two-pole open
interval.
302
t1 3PhHS . High-speed reclosing shot 1 started by this
ZoneSeqCoord .
123 and Figure 124
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ZONESTEP input. This functionality
and default factory configuration for examples.
1MRK 511 401-UUS F
M12399-46 v9
Bay control REC670
Application manual