ABB REB670 Commissioning Manual page 153

1MRK 505 372-UEN A
Busbar protection REB670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
1. Check that the auto recloser function is operative, for example by making an
auto reclosing shot.
Keep the CB simulator BR closed. Remove the CBREADY signal by opening
SRY.
2. Apply a fault and thereby a START signal.
3. Check that no auto reclosing takes place.
Checking the influence of synchrocheck (at three-phase reclosing)
1. Check that the auto recloser is operative, for example, by making a three-
phase reclosing shot with the synchrocheck SESRSYN conditions fullfilled.
Set the SESRSYN function to Off to eliminate the signal connected to input
signal SYNC.
2. Apply a fault causing three-phase trip and thereby a START and a TR3P signal
to the auto recloser.
3. Wait for the tSync time-out limit.
Check that no reclosing is made.
Checking the response when auto recloser is
Procedure
1. Check that the auto recloser is operative, for example by making a reclosing
shot.
Set the autoreclosing operation to Off, for example by external control.
The output READY shall be low, and PREP3P shall be high.
2. Apply a single phase fault and thereby a START signal.
3. Check that a definitive three phase trip and no auto reclosing takes place.
Testing auto reclosing in a multi-breaker arrangement
The usual arrangement is to have an auto recloser per circuit-breaker. They can be
in different circuit breaker related IEDs or in a common IED.
• A master auto recloser is set with Priority = High.
• A slave auto recloser is set with Priority = Low.
See the application manual for an illustration of typical
interconnections.
The two auto reclosers can be checked individually by carefully applying START,
WAIT, and INHIBIT signals.
It is also possible to verify the two functions together by using circuit breaker
simulating equipment for two circuit breaker circuits. There should be
interconnections from the master to the slave function, WFMASTER- WAIT, and
UNSUCCL - INHIBIT, as shown in the illustration referred to above.
Section 10
M12400-161 v10
Off
M12400-173 v7
M12400-185 v7
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