Completing The Test - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
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3. Apply normal conditions as in step 1.
The BLKV, 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
higher than the set value
The BLKV, 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 trip level in all
three phases.
7. Keep the current constant. Disconnect the voltage in all three phases simultaneously.
The BLKV, 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
9. Check that the pickup output signals PU_DV_A and PU_DI_A and the general pickup signals
PU_DV or PU_DI are activated.
10. Check that the pickup 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.
10.9.2.6

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
10.9.3 Fuse failure supervision
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
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
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.
Commissioning manual
The BLKV 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
VDLDPU of the dead line detection function.
set
DIPU .
DVPU and DIPU .
in this chapter.
Testing functionality by secondary injection
1 and 2.
DVPU and the current change must be
TestMode setting to Disabled .
GUID-DCCD4C4A-8335-43BA-A2B2-9994380985B0 v2
"Requirements"
GUID-004BFFE4-B1C1-4C0E-8D7A-ABE7B566AB28 v2
0 in about 27 ms.
Section 10
M1405-130 v5
and
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