Ph/2Ph/3Ph Operating Mode - ABB RET670 Commissioning Manual

Transformer protection version 2.1 ansi
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1MRK 504 154-UUS B
2.0s) and shorter than the dead-time of SMBRREC (79), when included in the protection
scheme.
Check that the second trip is a three-pole trip and that a three-phase autoreclosing attempt
is given after the three-phase dead time. Functional outputs TRIP, TR_A, TR_B, TR_C and TR1P
should be active during the first fault. No other outputs should be active. Functional outputs
TRIP, all TR_A, TR_B, TR_C and TR3P should be active during second fault.
10.12.1.3

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
2.
Initiate different single-phase-to-ground faults one at a time.
Take an adequate time interval between faults into consideration, to overcome a reset time,
which is activated by the autorecloser function SMBRREC (79). Only a single-pole trip should
occur for each separate fault and only one of the trip outputs (TR_A, TR_B, TR_C) 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 reset time
which is activated by SMBRREC (79). Only a two-phase trip should occur for each separate
fault and only corresponding two trip outputs (TR_A, TR_B, TR_C) 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.
5.
Initiate a single phase-to-ground fault and switch it off immediately when the trip signal is
issued for the corresponding phase. Initiate the same fault once again within the reset time
of the used SMBRREC (79).
A single-phase fault shall be given at the first fault. A three-pole trip must be initiated for the
second fault. Check that the corresponding trip signals appear after both faults. Functional
outputs TRIP, TR_A, TR_B, TR_C and TR1P should be active during first fault. No other outputs
should be active. Functional outputs TRIP, all TR_A, TR_B, TR_C and TR3P should be active
during second fault.
6.
Initiate a single phase-to-ground fault and switch it off immediately when the trip signal is
generated for the corresponding phase. Initiate the second single-phase-to-ground fault in
one of the remaining phases within the time interval, shorter than
setting 2.0s) and shorter than the dead-time of SMBRREC (79), when included in the
protection scheme.
7.
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.
10.12.1.4
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
2.
Activate shortly the set lockout (SETLKOUT) signal in the IED.
3.
Check that the circuit breaker lockout (CLLKOUT) signal is set.
Commissioning manual
AutoLock and TripLockout are both set to Disabled .
AutoLock and TripLockout are both set to Disabled .
Testing functionality by secondary injection
SEMOD54375-143 v4
tEvolvingFault (default
SEMOD54375-170 v10
Section 10
209

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