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1MRK 506 331-UUS A
6.10.2.2
6.10.2.3
Commissioning Manual
5.
Initiate the same fault once again within the reclaim time of the used autorecloser
function.
A single-phase fault shall be given at the first fault. A three-phase trip must be
initiated for the second fault. Check that the corresponding trip signals appear
after both faults. Functional outputs TRIP, TR_A, TR_B, TR_C and TR1P should
be active during first fault. No other outputs should be active. Functional outputs
TRIP, all TR_A, TR_B, TR_C and TR3P should be active during second fault.
6.
Initiate a single-phase-to-ground fault and switch it off immediately when the trip
signal is issued for the corresponding phase.
7.
Initiate the second single-phase-to-ground fault in one of the remaining phases.
This shall be within the time interval, shorter than tEvolvingFault (default setting
2.0 s) and shorter than the dead-time of the autoreclose function, when included
in the protection scheme. Check that the second trip is a three-phase trip and that
a three-phase autoreclosing attempt is given after the three-phase dead time.
Functional outputs TRIP, TR_A, TR_B, TR_C and TR1P should be active during
first fault. No other outputs should be active. Functional outputs TRIP, all TR_A,
TR_B, TR_C and TR3P should be active during second fault.
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 set.
3.
Activate the automatic lockout function, set AutoLock = Enabled and repeat.
4.
Reset the lockout signal by shortly thereafter activating the reset lockout
(RSTLKOUT) signal.
5.
Activate the TRIP signal lockout function, set TripLockout = Enabled and repeat.
The output TRIP must be active and stay active after each fault, CLLKOUT must
be set.
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/SPTPTRC(94,1->0)/1:SPTPTRC for the function, or for
Section 6
Testing functionality
139
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