should occur for each separate fault and only one of the trip outputs (TRLn) should be
activated at a time. Functional outputs TRIP and TR1P should be active at each fault. No
other outputs should be active.
3.
Initiate different phase-to-phase faults one at a time.
Take an adequate time interval between faults into consideration, to overcome a reclaim
time which is activated by SMBRREC. Only a two-phase trip should occur for each
separate fault and only corresponding two trip outputs (TRLn) should be activated at a
time. Functional outputs TRIP and TR2P should be active at each fault. No other outputs
should be active.
4.
Initiate a three-phase fault.
Take an adequate time interval between faults into consideration, to overcome a reclaim
time, which may be activated by SMBRREC. Only a three-phase trip should occur for the
fault and all trip outputs (TRLn) should be activated at the same time. Functional outputs
TRIP and TR3P should be active at each fault. No other outputs should be active.
5.
Initiate a single phase-to-earth fault and switch it off immediately when the trip signal is
issued for the corresponding phase. Initiate the same fault once again within the reclaim
time of the used SMBRREC.
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, TRLn and TR1P should be active during first fault. No other
outputs should be active. Functional outputs TRIP, all TRLn and TR3P should be active
during second fault.
6.
Initiate a single phase-to-earth fault and switch it off immediately when the trip signal is
generated for the corresponding phase. Initiate the second single-phase-to-earth fault in
one of the remaining phases within the time interval, shorter than
tEvolvingFault (default
setting 2.0s) and shorter than the dead-time of SMBRREC, 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, TRLn and
TR1P should be active during first fault. No other outputs should be active. Functional
outputs TRIP, all TRLn and TR3P should be active during second fault.
7.
Initiate a phase-to-phase fault and switch it off immediately when the trip signal is
issued for the corresponding two phases. Initiate a second phase-to-phase fault between
two other phases within the time interval, shorter than
tEvolvingFault (default setting
2.0s).
Check, that the output signals, issued for the first fault, correspond to a two- trip for
included phases. The output signals generated by the second fault must correspond to
the three-phase tripping action.
12.11.1.4
Circuit breaker lockout
SEMOD54375-170 v10
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 Off.
2.
Activate shortly the set lockout (SETLKOUT) signal in the IED.
3.
Check that the circuit breaker lockout (CLLKOUT) signal is set.
4.
Activate shortly thereafter, the reset lockout (RSTLKOUT) signal in the IED.
5.
Check that the circuit breaker lockout (CLLKOUT) signal is reset.
6.
Initiate a three-phase fault.
A three-phase trip should occur and all trip outputs TRL1, TRL2, TRL3 should be activated.
Functional outputs TRIP and TR3P should be active at each fault. The output CLLKOUT
should not be set.
7.
Activate the automatic lockout function, set
AutoLock = On and repeat.
Besides the TRIP outputs, CLLKOUT should be set.
8.
Reset the lockout signal by activating the reset lockout (RSTLKOUT) signal.
9.
Activate the trip signal lockout function, set
TripLockout = On and repeat.
Section 12
1MRK 502 067-UEN B
Testing functionality by secondary injection
222
Commissioning manual
