Values of the logical signals are available on the local HMI under Main menu/Tests/
Function status/Control/<Function>/<Function:1>. The Signal Monitoring in
PCM600 shows the same signals that are available on the local HMI.
The interlocking function consists of a bay-level part and a station-level part. The
interlocking is delivery specific and is realized by bay-to-bay communication over the
station bus. For that reason, test the function in a system, that is, either in a complete
delivery system as an acceptance test (FAT/SAT) or as parts of that system.
6.8 Testing logic functions
6.8.1 Tripping logic, common 3-phase output SMPPTRC (94)
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to verify
settings".
Values of the logical signals for SMPPTRC (94) are available on the local HMI under
Main menu/Tests/Function status/Logic/SMPPTRC(94,1->0)/SMPPTRC:X. The
Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
This function is functionality tested together with other protection functions (ground-fault
overcurrent protection, and so on) within the IED. It is recommended that the function is
tested together with the autorecloser function, regardless of whether the autorecloser
function is integrated or external.
6.8.1.1 Three-phase operating mode
1. Check that AutoLock and TripLockout are both set to Disabled.
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 a trip
is initiated by any protection function, either integrated or external. The functional
TRIP output signal must always appear.
6.8.1.2 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.
Section 6 1MRK 505 293-UUS A
Testing functionality
112
Commissioning manual
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