Verifying The Autorecloser For 3-Phase Operation Function Smbrrec; Checking The Reclosing Conditions - ABB Relion 650 Series Commissioning Manual

1MRK 506 336-UEN B
The CB should be closed and ready.
3. If external control Off/On is connected, check that it works.
Set
state of the function.
7.8.2.3

Verifying the autorecloser for 3-phase operation function SMBRREC

Select the test cases to be run according to what is applicable to the particular application. It
can be, for example, three-phase single-shot reclosing or two-shot reclosing. Below, a case
with three-phase single-shot reclosing is described.
1. Set
2. If the autorecloser for 3-phase operation function SMBRREC is not to be operated, ensure
that the SMBRREC input is activated. If SMBRRECis to be included, ensure that it is
supplied with the appropriate AC quantities.
3. Simulate CB closed position by closing switch SC to make the BR relay start.
4. Simulate CBREADY by closing the switch SRY, and leave it closed.
5. Inject AC quantities to give a trip to the BR and to the START input.
Observe and preferably record the operation. The BR relay shall trip and reclose (start).
After reclosing, the SRY switch can be opened for about 5s and then closed again.
The autoreclosing open time and the sequence should be checked, for example in the
event recording. Check also the operation indications (disturbance report) and the
operation counters on the local HMI under Main menu/Tests/Function status/
SMBRREC(79,0->1)/SMBRREC:1
Should the operation not be as expected, this should be investigated. It could be caused
by an inappropriate setting or missing condition such as CBREADY.
6. Repeat the sequence by simulating a permanent fault.
Shortly after the reclosing shot, a new fault is applied. If a single-shot reclosing program
is selected, there shall be one reclosing operation and then blocking of SMBRREC for the
set Reclaim time.
Before a new reclosing sequence can be run, the CBREADY and CBPOS (CB closed) must
be set manually.
7.8.2.4

Checking the reclosing conditions

When checking the influence of a releasing condition it is suggested to first run a sequence
with the condition fulfilled. When the condition signal is removed, and a new sequence is run, it
indicates that the result was due to the changed condition. In case of a blocking signal the
procedure should be similar. Start without the blocking or inhibit signal, and then run a
sequence with the blocking or inhibit signal added.
Checking the influence of the INHIBIT signal
1. Check that the autorecloser function SMBRREC is operative, for example, by making a
reclosing shot without the INHIBIT signal.
2. Apply a fault and thereby a START signal. At the same time, or during the open time,
apply a signal to the input INHIBIT.
3. Check that the reclosing sequence is interrupted and no reclosing takes place.
Check closing onto a fault
1. Check that the autorecloser function SMBRREC is operative, for example by making a
reclosing shot.
Line distance protection REL650
Commissioning manual
Operation to ExternalCtrl and use that control to switch On and Off, and check the
Operation = On .
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Section 7
Testing functionality
M12400-91 v9
M12400-123 v4
M12400-129 v4
M12400-137 v4
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