Completing The Test; Fuse Failure Supervision Vdspvc - ABB rec670 Commissioning Manual

1MRK 511 360-UEN A
10.8.2.6
10.8.3
Bay control REC670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
1. Simulate normal operating conditions with the three-phase currents in phase
with their corresponding phase voltages and with all of them equal to their rated
values.
2. Change the voltages and currents in all three phases simultaneously.
The voltage change must be higher than the set value DU> and the current
change must be lower than the set value DI<.
• The BLKU and BLKZ signals appear without any time delay. The BLKZ
signal will be activated only if the internal deadline detection is not
activated at the same time.
• 3PH should appear after 5 seconds, if the remaining voltage levels are
lower than the set UDLD< of the dead line detection function.
3. Apply normal conditions as in step 1.
The BLKU, BLKZ and 3PH signals should reset, if activated, see step
4. Change the voltages and currents in all three phases simultaneously.
The voltage change must be higher than the set value DU> and the current
change must be higher than the set value DI<.
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.

Fuse failure supervision VDSPVC

Prepare the IED for verification of settings outlined in section
verify settings".
Section 10
1 and 2.
"Preparing the IED to
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