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1MRK 506 355-UEN A
10.11.7.10
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
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.
Three phase undercurrent LCP3PTUC
Prepare the IED for verification of settings as outlined in section
section
"Preparing for test"
1.
Connect the test set for three-phase current injection to the appropriate IED
terminals.
2.
Inject a symmetrical three-phase current larger than the set value I<.
3.
Decrease the injected current in phase L1 and note the operated value (start
value) of the studied step of the function.
4.
Increase the current slowly and note the reset value.
5.
Connect a trip output contact to a timer.
6.
Decrease the injected current step-wise to 50% of the operate level and check the
time delay.
7.
Check that all trip and start contacts operate according to the configuration
(signal matrices).
8.
Finally check that start and trip information is stored in the event memory.
9.
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.
in this chapter.
Section 10
"Requirements"
and
229
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