ABB Relion 670 Series Commissioning Manual page 243

1MRK 506 371-UUS E
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.
11.11.7.8 Zero sequence overcurrent protection LCZSPTOC (51N)
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
1. Connect the test set for three-phase voltage injection (A, B, C) or 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 (pickup 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 pickup contacts operate according to the configuration (signal
matrices).
7. Finally check that pickup and trip information is stored in the event memory.
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.
11.11.7.9 Three phase overcurrent LCP3PTOC (51)
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
1. Connect the test set for three-phase current injection to the appropriate IED terminals.
2. Increase the injected current in phase A and note the operated value (pickup 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 pickup contacts operate according to the configuration (signal
matrices).
7. Finally check that pickup and trip information is stored in the event memory.
8. Repeat steps 2 – 7 for phases B and C.
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.
11.11.7.10 Three phase undercurrent LCP3PTUC (37)
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
Line distance protection REL670
Commissioning manual
in this chapter.
in this chapter.
in this chapter.
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Testing functionality by secondary injection
TESTMODE setting to Disabled .
GUID-DF48CC20-7275-4543-84D1-0856A946520A v2
"Requirements" and section
TESTMODE setting to Disabled .
GUID-3F003AB6-4B2F-4C70-AE84-B04E98A067DE v1
"Requirements" and section
TESTMODE setting to Disabled .
GUID-8C3BA5FB-5878-4B87-BDF0-5DCDF72870B4 v1
"Requirements" and section
Section 11
237