ABB Relion 670 Series Commissioning Manual page 108

Section 10
Testing functionality by secondary injection
For inverse time curves, check the operate time at a current equal to 110% of the operate
current for txMin.
5. Check that all operate and start contacts operate according to the configuration (signal
matrixes).
6. Reverse the direction of the injected current and check that the protection does not operate.
7. Repeat the above described tests for the second step.
8. Check that start and trip information is stored in the event menu and in the built-in disturbance
recorder.
10.5.2.3 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.5.3 Instantaneous residual overcurrent protection EFRWPIOC
Prepare the IED for verification of settings outlined in Section
To verify the settings the following fault type should be tested:
• Phase-to-earth fault
Ensure that the maximum continuous current, supplied from the current source used for the test of
the IED, does not exceed four times the rated current value of the IED.
10.5.3.1 Measuring the operate limit of set values
1. Inject a phase current into the IED with an initial value below the set value of IN>> and also
make sure that the set value IN>> is in between IN>>Min and IN>>Max.
2. Increase the injected current in the phase until the TRIP signal appears.
3. Switch the fault current off.
4. Compare the measured operating current with the set value IN>>
10.5.3.2 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.5.4 Two step residual overcurrent protection EF2PTOC
Prepare the IED for verification of settings outlined in Section
102
Do not exceed the maximum permitted overloading of the current circuits in the
IED.
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1MRK 506 377-UEN Rev. K
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Railway application RER670
Commissioning manual
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