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Section 10
Testing functionality by secondary injection
10.11.7.8
10.11.7.9
228
1.
Connect the test set for three-phase current injection to the appropriate IED
terminals as shown in Figure
2.
Increase the injected 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.
Zero sequence overcurrent protection LCZSPTOC
Prepare the IED for verification of settings as outlined in section
section
"Preparing for test"
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.
Three phase overcurrent LCP3PTOC
Prepare the IED for verification of settings as outlined in section
section
"Preparing for test"
46
in this chapter.
in this chapter.
Line distance protection REL670 2.1 IEC
1MRK 506 355-UEN A
"Requirements"
and
"Requirements"
and
Commissioning manual
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