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1MRK 511 409-UUS Rev. K
11.10.1.4
1p/2p/3p operating mode
In addition to other tests, the following tests, which depend on the complete configuration of an IED,
should be carried out.
Procedure
1.
Make sure that AutoLock and TripLockout are both set to Disabled.
2.
Initiate different single-phase-to-ground faults one at a time.
Take an adequate time interval between faults into consideration, to overcome a reset time, which
is activated by the autorecloser function SMBRREC (79). Only a single-pole trip should occur for
each separate fault and only one of the trip outputs (TR_A, TR_B, TR_C) 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 reset time which is
activated by SMBRREC (79). Only a two-phase trip should occur for each separate fault and only
corresponding two trip outputs (TR_A, TR_B, TR_C) 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.
5.
Initiate a single phase-to-ground fault and switch it off immediately when the trip signal is issued for
the corresponding phase. Initiate the same fault once again within the reset time of the used
SMBRREC (79).
A single-phase fault shall be given at the first fault. A three-pole 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 generated
for the corresponding phase. Initiate the second single-phase-to-ground 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 (79), when included in the protection scheme.
7.
Check, that the output signals, issued for the first fault, correspond to a two-phase trip for included
phases. The output signals generated by the second fault must correspond to the three-phase
tripping action.
11.10.1.5
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.
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- trip should occur and all trip outputs TR_A, TR_B, TR_C 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 = Enabled 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 = Enabled and repeat.
Phasor measurement unit RES670
Commissioning manual
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Section 11
Testing functionality by secondary injection
SEMOD54375-143 v6
SEMOD54375-170 v11
137
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