Logic - ABB RET670 Commissioning Manual

Section 10
Testing functionality by secondary injection
10.12

Logic

10.12.1 Tripping logic, common 3-phase output SMPPTRC (94)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
This function is functionality tested together with other protection functions (line differential
protection,ground-fault overcurrent protection, and so on) within the IED. It is recommended that
the function is tested together with the autorecloser function, when built into the IED or when a
separate external unit is used for reclosing purposes. The instances of SMPPTRC (94) are identical
except for the name of the function block SMPPTRC (94). The testing is preferably done in
conjunction with the protection system and autoreclosing function.
10.12.1.1 Three-phase operating mode
1. Check that
2. Initiate a three-phase fault.
An adequate time interval between the faults should be considered, to overcome a reset time
caused by the possible activation of the Autorecloser function SMBRREC (79). The function
must issue a three-pole trip in all cases, when trip is initiated by any protection or some
other built-in or external function. The following functional output signals must always
appear simultaneously: TRIP, TR_A, TR_B. TR_C and TR3P.
10.12.1.2 1ph/3ph operating mode
In addition to various other tests, the following tests should be performed. They depend on the
complete configuration of an IED:
Procedure
1. Make sure that
2. Initiate different single-phase-to-ground faults one at a time.
3. Initiate different phase-to-phase and three-phase faults.
Consider using an adequate time interval between faults, to overcome a reset time, which is
activated by SMBRREC (79). A three-pole trip should occur for each separate fault and all of
the trips. Functional outputs TRIP, all TR_A, TR_B, TR_C and TR3P should be active at each
fault.
4. 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).
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 second single phase-to-ground fault in one
of the remaining phases within the time interval, shorter than
208
in this chapter.
AutoLock and TripLockout are both set to Disabled .
TripLockout and AutoLock are both set to Disabled .
No other outputs should be active.
1MRK 504 154-UUS B
"Requirements" and
tEvolvingFault (default setting
Commissioning manual
SEMOD53577-1 v1
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