ABB REL670 Installation And Commissioning Manual page 167

13.1.4
Logic
responding two trip outputs (TRLn) should be activated at a time. Func-
tional outputs TRIP and TR2P should be active at each fault. No other
outputs should be active.
4. Initiate a three-phase fault
Take into consideration an adequate time interval between faults, to over-
come a reclaim time which may be activated by the autoreclosing func-
tion. 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 ac-
tive.
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 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.
6. Initiate a single-phase-to-earth fault and switch it off immediately
when the trip signal is generated for the corresponding phase. Ini-
tiate the second single-phase-to-earth fault in one of the remaining
phases within the time interval, shorter than tEvolvingFault (default
setting 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.
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 sec-
ond phase-to-phase fault between two other phases within the time
interval, shorter than tEvolvingFault (default setting 2.0 s).
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.
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 a IED.
Procedure
1. Make sure that AutoLock and TripLockout are both set to Off .
Chapter 11
Verifying settings by secondary
injection
159