ABB RED670 - Three Phase Overcurrent LCP3 PTOC; Three Phase Undercurrent LCP3 PTUC

1. Connect the test set for three-phase voltage injection (L1, L2, L3or residual
voltage injection (N) to the appropriate IED terminals. This is dependent on
how the IED is fed from the CT.
2.
Increase the injected zero-sequence current and note the operated value (start
value) of the studied step of the function.
3. Decrease the current slowly and note the reset value.
4. Connect a trip output contact to a timer.
5. Set the injected current to 200% of the operate level of the tested stage.
Switch on the current and check the time delay.
6. Check that all trip and start contacts operate according to the configuration
(signal matrices).
7. Finally check that start and trip information is stored in the event memory.
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.
11.11.7.9 Three phase overcurrent LCP3PTOC
GUID-3F003AB6-4B2F-4C70-AE84-B04E98A067DE v1
Prepare the IED for verification of settings as outlined in section
"Requirements"
and section "Preparing for test" in this chapter.
1.
Connect the test set for three-phase current injection to the appropriate IED
terminals.
2. Increase the injected current in phase L1 and note the operated value (start
value) of the studied step of the function.
3. Decrease the current slowly and note the reset value.
4. Connect a trip output contact to a timer.
5. Set the injected current to 200% of the operate level of the tested stage.
Switch on the current and check the time delay.
6. Check that all trip and start contacts operate according to the configuration
(signal matrices).
7. Finally check that start and trip information is stored in the event memory.
8. Repeat steps 2 – 7 for phases L2 and L3.
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.
11.11.7.10 Three phase undercurrent LCP3PTUC
GUID-8C3BA5FB-5878-4B87-BDF0-5DCDF72870B4 v1
Prepare the IED for verification of settings as outlined in section
"Requirements"
and section "Preparing for test" in this chapter.
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 255
Commissioning manual