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 (79) for the set Reset time.
Before a new reclosing sequence can be run, the CBREADY and 52a (CB closed)
must be set manually.
6.7.2.4
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 (79) is operative, for example, by
making a reclosing shot without the INHIBIT signal.
2.
Apply a fault and thereby a RI 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 (79) is operative, for example by
making a reclosing shot.
Keep the CBREADY signal high.
2.
Set the breaker simulating relay BR in Open position.
3.
Close the BR relay and apply immediately a fault and thereby a RI signal.
4.
Check that no reclosing takes place.
Checking the influence of CB not ready for reclosing
1.
Check that the autorecloser function SMBRREC (79) is operative, for example by
making a reclosing shot.
Keep the CB simulator BR closed. Remove the CBREADY signal by opening SRY.
2.
Apply a fault and thereby a RI signal.
3.
Check that no reclosing takes place.
Section 6
1MRK 505 293-UUS A
Testing functionality
104
Commissioning manual
