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1MRK 506 355-UEN A
10.12.1.3
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
trip outputs (TRLn) should be activated at a time. Functional outputs TRIP and
TR1P should be active during each fault. No other outputs should be active.
3.
Initiate different phase-to-phase and three-phase faults.
Consider using an adequate time interval between faults, to overcome a reclaim
time, which is activated by SMBRREC. A three-phase trip should occur for each
separate fault and all of the trips. Functional outputs TRIP, all TRLn and TR3P
should be active at each fault.
No other outputs should be active.
4.
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.
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 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 the first fault. No other
outputs should be active. Functional outputs TRIP, all TRLn and TR3P should
be active during second fault.
1ph/2ph/3ph 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 Off.
2.
Initiate different single-phase-to-earth faults one at a time.
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
Section 10
231
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