ABB RED670 Relion 670 series, Commissioning Manual

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1. Check that the IED settings are appropriate, for example the start value and
the time delay.
2. Supply the IED with three-phase voltages at their rated values and initial
frequency.
3. Slowly increase the frequency of the applied voltage with a 40 mHz step,
applying it for a period that is 10% longer than
tDelay .
4. Note the operate value and compare it with the set value.
5. Decrease the frequency to rated operating conditions.
6. Check that the START signal resets.
7. Set the frequency to 20 mHz under the operate value.
8. Increase the frequency with a 40 mHz step, applying it for a period that is
10% longer than
tDelay .
9. Measure the time delay for the TRIP signal, and compare it with the set value.
Note that the measured time consists of the set value for time delay plus
minimum operate time of the start function (80 - 90 ms).
Extended testing
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1. The test above can be repeated to check the time to reset.
Verification of the low voltage magnitude blocking
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1. Check that the settings in the IED are appropriate, for example the
StartFrequency and the tDelay .
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the magnitude of the applied voltage, until the BLKDMAGN
signal appears.
4. Note the voltage magnitude value and compare it with the set value.
5. Slowly increase the frequency of the applied voltage, to a value above
StartFrequency .
6. Check that the START signal does not appear.
7. Wait for a time corresponding to tDelay , make sure that the TRIP signal does
not appear.
11.7.2.2 Completing the test
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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.
11.7.3 Rate-of-change frequency protection SAPFRC
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Prepare the IED for verification of settings outlined in Section "Preparing the IED
to verify settings" .
11.7.3.1 Verifying the settings
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Section 11
1MRK 505 378-UEN A
Testing functionality by secondary injection
210 Line differential protection RED670 2.2 IEC
Commissioning manual