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No other outputs should be active.

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.

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.

11.12.1.4

1ph/2ph/3ph operating mode

SEMOD54375-143 v6

In addition to other tests, the following tests, which depend on the complete configuration of an IED,
should be carried out.

Procedure

Make sure that

AutoLock

and

TripLockout

are both set to

Off

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.

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.

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.

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

Section 11

1MRK 511 403-UEN Rev. L

Testing functionality by secondary injection

188

Bay control REC670

Commissioning manual