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1MRK 506 331-UUS A
6.10.1.1
6.10.1.2
6.10.1.3
Commissioning Manual
This function is functionality tested together with other protection functions (ground-
fault overcurrent protection, and so on) within the IED. It is recommended that the
function is tested together with the autorecloser function, regardless of whether the
autorecloser function is integrated or external.
Three-phase operating mode
1.
Check that AutoLock and TripLockout are both set to Disabled.
2.
Initiate a three-phase fault.
An adequate time interval between the faults should be considered, to overcome
areset time caused by the possible activation of the Autorecloser function,
SMBRREC (79). The function must issue a three-pole trip in all cases, when a
trip is initiated by any protection function, either integrated or external. The
functional TRIP output signal must always appear.
Circuit breaker lockout
The following tests should be carried out when the built-in lockout function is used in
addition to possible other tests, which depends on the complete configuration of an
IED.
1.
Check that AutoLock and TripLockout are both set to Disabled.
2.
Initiate a three-phase fault.
The functional output TRIP should be active at each fault. The output CLLKOUT
must not be activated.
3.
Activate the automatic lockout function, set AutoLock = Enabled and repeat.
Besides the TRIP outputs, CLLKOUT should be set.
4.
Reset the lockout signal by activating the reset lockout (RSTLKOUT) signal.
5.
Activate the TRIP signal lockout function, set TripLockout = Enable and repeat.
The output TRIP must be active and stay active after each fault. CLLKOUT must
be activated.
6.
Reset the lockout.
All functional outputs should reset.
7.
Deactivate the TRIP signal lockout function, set TripLockout = Disabled and the
automatic lockout function, set AutoLock = Disabled if not used.
Completing the test
Continue to test another function or end the testing by setting the parameter TestMode
to Disabled under Main menu/Tests/IED test mode/1:TESTMODE. If another
function is tested, then set the parameter Blocked to No under Main menu/Tests/
Function test modes/Logic/SMPPTRC(94,1->0)/X:SMPPTRC for the function, or
Section 6
Testing functionality
137
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