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Section 10
Testing functionality by secondary injection
10.6.1.6
10.7
10.7.1
10.7.2
88
The BLKU, BLKZ and 3PH signals should not appear.
5.
Repeat step 2.
6.
Connect the nominal voltages in all three phases and feed a current below the
operate level in all three phases.
7.
Keep the current constant. Disconnect the voltage in all three phases
simultaneously.
The BLKU, BLKZ and 3PH signals should not appear.
8.
Change the magnitude of the voltage and current for phase 1 to a value higher
than the set value DU> and DI<.
9.
Check that the start output signals STDUL1 and STDIL1 and the general start
signals STDU or STDI are activated.
10. Check that the start output signals for the current and voltage phases 2 and 3 are
activated by changing the magnitude of the voltage and current for phases 2 and
3.
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting
to Off. Restore connections and settings to their original values, if they were changed
for testing purposes.
Control
Apparatus control APC
The apparatus control function consists of four types of function blocks, which are
connected in a delivery-specific way between bays and to the station level. For that
reason, test the total function in a system, that is, either in a complete delivery system
as an acceptance test (FAT/SAT) or as parts of that system.
If a block/unblock command is sent from remote to function, while the
IED is shut down, this command will not be recognized after the start
up, thus the command that was sent prior to the shut down is used. In
such cases, where there is a mismatch, the user is advised to make a
complete cycle of block/unblock operations to align the statuses.
The complete apparatus control function is not included in this
product.
Single command, 16 signals SINGLECMD
For the single command function block, it is necessary to configure the output signal
to corresponding binary output of the IED. The operation of the single command
1MRK 504 160-UEN -
Transformer protection RET650 2.1 IEC
Commissioning manual
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