Completing The Test; Fuse Failure Supervision Vdspvc - ABB REB670 Commissioning Manual

Section 10
Testing functionality by secondary injection
10.8.1.6
10.8.2
132
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
to verify settings".
Checking the operation of binary input and output
1. Simulate normal operation conditions with three-phase voltage on the main
fuse group and the pilot fuse group. Ensure the values are equal to their rated
values.
2. Disconnect one of the phase voltage from the main fuse group or the pilot fuse
group. Observe the binary outputs of the IED. The MAINFUF or the
PILOTFUF signals are simultaneously activated. Only the output circuit
related to the open phase will be active i.e either MAINFUF or PILOTFUF.
3. Establish a normal voltage operating condition and observe the corresponding
output signals. MAINFUF or PILOTFUF should change to 0 in about 27 ms.
4. Set normal conditions as mentioned in step 1.
5. Enable the BLOCK binary input and repeat step 2. MAINFUF or PILOTFUF
should not appear.
Checking the operation of MAINFUF and PILOTFUF
1. Simulate normal operation conditions with three-phase voltage on the main
fuse group and the pilot fuse group. Ensure the values are equal to their rated
values.
2. Decrease one of the three-phase voltages on main fuse group or pilot fuse
group. The voltage change must be greater than the set value for
1MRK 505 372-UEN A
M1405-130 v5
GUID-DCCD4C4A-8335-43BA-A2B2-9994380985B0 v2
"Preparing the IED
GUID-004BFFE4-B1C1-4C0E-8D7A-ABE7B566AB28 v2
Busbar protection REB670 2.2 IEC
Commissioning manual