ABB Relion 670 Series Applications Manual page 310

Section 14
Control
PREP3P
Prepare three-pole trip is usually connected to the trip block to force a coming trip to be a three-
pole one. If the auto recloser cannot make a single-pole or two-pole auto reclosing, the tripping
should be three-pole.
READY
Indicates that the auto recloser is ready for a new and complete auto reclosing sequence. It can be
connected to the zone extension if a line protection should have extended zone reach before auto
reclosing.
SETON
Indicates that auto recloser is switched on and operative.
SUCCL
If the circuit breaker closing command is given and the circuit breaker is closed within the set time
interval
SYNCFAIL
SYNCFAIL output indicates that the auto recloser is inhibited because the synchrocheck or
The
energizing check condition has not been fulfilled within the set time interval, tSync. Also
output will be activated.
UNSUCCL
Indicates unsuccessful reclosing.
WFMASTER
Wait from master is used in high priority units to hold back auto reclosing of the low priority unit
during sequential auto reclosing. Refer to the recommendation for multi-breaker arrangements in
Figure 124.
Connection and setting examples
Figure 122
auto reclosing and Figure
used for single-pole, two-pole or three-pole auto reclosing.
304
tUnsucCl , the SUCCL output is activated after the set time interval tSuccessful .
is showing an example of how to connect the auto recloser when used for three-pole
123 is showing an example of how to connect the auto recloser when
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1MRK 511 401-UUS F
ABORTED
Bay control REC670
Application manual