1. Check that the input logical signals BLOCK, CBOPEN and VTSU are logical
zero.
2. Supply a three-phase rated voltage in all three phases and note on the local HMI
that the TRIP logical signal is equal to the logical 0.
3. Switch off the voltage in all three phases.
After set tTrip time a TRIP signal appears on the corresponding binary output or
on the local HMI.
Note that TRIP at this time is a pulse signal, duration should be
according to set tPulse.
4. Inject the measured voltages at rated values for at least set tRestore time.
5. Activate the CBOPEN binary input.
6. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
7. Inject the measured voltages at rated values for at least set tRestore time.
8. Activate the VTSU binary input.
9. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
10. Reset the VTSU binary input.
11. Inject the measured voltages at rated values for at least set tRestore time.
12. Activate the BLOCK binary input.
13. Simultaneously disconnect all the three-phase voltages from the IED.
No TRIP signal should appear.
14. Reset the BLOCK binary input.
10.6.6.2 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.
10.6.7 Radial feeder protection PAPGAPC
The Signal Monitoring tool in PCM600 shows the service values that are available on
the Local HMI as well.
10.6.7.1 Verifying the settings
Values of the logical signals for PAPGAPC are available on the local HMI under:
Main menu/Tests/Function status/Voltage protection/RadialFeeder(27, U<)/
PAPGAPC(27, U<):1
Section 10 1MRK 506 355-UEN A
Testing functionality by secondary injection
180 Line distance protection REL670 2.1 IEC
Commissioning manual
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