158
Logic
Chapter 11
Verifying settings by secondary
injection
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 the autoreclosing function. 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 autore-
closing 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, TRLn and
TR1P should be active during first fault. No other outputs should be ac-
tive. Functional outputs TRIP, all TRLn and TR3P should be active dur-
ing 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 phas-
es within the time interval, shorter than tEvolvingFault (default set-
ting 2.0 s) and shorter than the dead-time of the auto-reclosing
function, when included in the protection scheme.
Check that the second trip is a three-phase trip and that a three phase au-
toreclosing attempt is given after the three phase dead time. Functional
outputs TRIP, TRLn and TR1P should be active during first fault. No oth-
er outputs should be active. Functional outputs TRIP, all TRLn and TR3P
should be active during second fault.
13.1.3
1ph/2ph/3ph operating mode
In addition to other tests, the following tests, which depend on the complete configuration of a
IED should be carried out:
Procedure
1.
Make sure that AutoLock and TripLockout both are set to off.
2.
Initiate different single-phase-to-earth faults one at a time.
Take into consideration an adequate time interval between faults, to over-
come a reclaim time which is activated by the autoreclosing function.
Only a single-phase trip should occur for each separate fault and only one
of the trip outputs (TR01-TRLn) should be activated at a time. Functional
outputs TR01-TRIP and TR01-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 into consideration an adequate time interval between faults, to over-
come a reclaim time which is activated by the autoreclosing function.
Only a two-phase trip should occur for each separate fault and only cor-
Summary of Contents for RELION REL670
Page 8: ...Contents ...
Page 72: ...64 About this chapter Chapter 9 Establishing connection and verifying the LON communication ...
Page 174: ...166 Remote communication Chapter 11 Verifying settings by secondary injection ...
Page 190: ...182 Maintenance Chapter 13 Fault tracing and repair ...
Page 198: ...190 Glossary Chapter 14 Glossary ...
