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 START signal.
4.
Check that no reclosing takes place.
Checking the influence of CB not ready for reclosing
M12400-149 v4
1.
Check that the autorecloser function SMBRREC 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 START signal.
3.
Check that no reclosing takes place.
Checking the influence of synchronizing check (at three-phase reclosing)
M12400-161 v7
1.
Check that the autorecloser for 3-phase operation function SMBRREC is operative, for
example, by making a three-phase reclosing shot with the synchronizing check condition.
Remove the SMBRREC signal.
2.
Apply a fault causing three-phase trip and thereby a START signal.
3.
Wait for the
tSync time out limit.
Check that no reclosing is made.
Restoring equipment
M12400-190 v4
After the tests, restore the equipment to normal or desired state. Check the following items in
particular:
1.
Check the operation counters.
Reset the counters to zero, if that is the user's preference. The counter reset function is
found on the local HMI under Main menu/Clear/Clear counters/SMBRREC(79,0->1)
2.
Restore settings that may have been modified for the tests back to normal.
3.
Disconnect the test switch, CB simulating arrangement and test circuits.
Reconnect any links or connection terminals, which may have been opened for the tests.
4.
Reset indications, alarms and disturbance recordings.
Clearing of the disturbance report must be done via the Disturbance Handling in
PCM600.
7.7.2.5
Completing the test
M12400-218 v5
Continue to test another function or end the testing by setting the parameter
TestMode to Off
under Main menu/Tests/IED test mode/TESTMODE:1. If another function is tested, then set
the parameter
Blocked to No under Main menu/Tests/Function test modes/Control/
SMBRREC(79,0->1)/SMBRREC:X for the function, or for each individual function in a chain, to
be tested next. Remember to set the parameter
Blocked to Yes, for each individual function
that has been tested.
7.7.3
Autorecloser for 1/3-phase operation STBRREC
GUID-3DF3EA35-B2DF-49F7-A547-BBE4ED11294A v4.1.1
Verification of the automatic reclosing function STBRREC (79) for single and three-phase
reclosing attempt, can be considered to consist of two parts; one part to verify the internal
logic and timing of the function and one part to verify its interaction with the protection
system. This section deals with verification of the auto-reclosing function itself. However, it is
practical to start start the autoreclosing function by activating a protection function, for
example, by secondary injection tests.
Prepare the IED for verification of settings as outlined in section
Section 7
1MRK 505 293-UEN B
Testing functionality
88
Breaker protection REQ650
Commissioning manual
© Copyright 2013 ABB. All rights reserved
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