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Section 9
Testing functionality by secondary injection
Take an adequate time interval between faults into consideration, to overcome a reclaim time,
which is activated by the autorecloser function SMBRREC. Only a single-phase trip 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 thantEvolvingFault (default setting 2.0s).
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.
9.4.1.4
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 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.
All trip outputs (TRL1, TRL2, TRL3) and functional outputs TRIP and TR3P must be active and
stay active after each fault, CLLKOUT should be set.
10.
Reset the lockout.
48
© 2017 - 2023 Hitachi Energy. All rights reserved
1MRK511447-UEN Rev. E
SEMOD54375-170 v11
Switchgear control unit SAM600-IO
Commissioning manual
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