ABB Relion 670 Series Commissioning Manual page 201

1MRK 506 371-UUS E
11.7.2 Overfrequency protection SAPTOF (81)
Prepare the IED for verification of settings outlined in Section
settings".
11.7.2.1 Verifying the settings
Verification of PICKUP value and time delay to trip
1. Check that the IED settings are appropriate, for example the pickup 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
4. Note the trip value and compare it with the set value.
5. Decrease the frequency to rated operating conditions.
6. Check that the PICKUP signal resets.
7. Set the frequency to 20 mHz under the trip 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 trip time of the pickup
function (80 - 90 ms).
Extended testing
1. The test above can be repeated to check the time to reset.
Verification of the low voltage magnitude blocking
1. Check that the settings in the IED are appropriate, for example 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
6. Check that the PICKUP signal does not appear.
7. Wait for a time corresponding to
11.7.2.2 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.
11.7.3 Rate-of-change frequency protection SAPFRC (81)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
Line distance protection REL670
Commissioning manual
tDelay .
tDelay , make sure that the TRIP signal does not appear.
in this chapter.
© Copyright 2017 ABB. All rights reserved
Testing functionality by secondary injection
"Preparing the IED to verify
PUFrequency and the
PUFrequency .
TESTMODE setting to Disabled .
"Requirements" and
Section 11
M16290-2 v7
M16290-12 v2
M16290-14 v6
M16290-28 v4
M16290-34 v6
M16290-52 v5
M16256-2 v6
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