Completing The Test; Rate-Of-Change Frequency Protection Sapfrc; Verifying The Settings - ABB REG670 Commissioning Manual

1MRK 502 073-UEN A
13.7.2.2
13.7.3
13.7.3.1
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Commissioning manual
Testing functionality by secondary injection
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
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
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.

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.

Rate-of-change frequency protection SAPFRC

Prepare the IED for verification of settings outlined in Section
to verify settings".

Verifying the settings

Verification of START value and time delay to operate
Section 13
M16290-28 v4
M16290-34 v6
M16290-52 v5
M16256-2 v6
"Preparing the IED
M16256-8 v1
M16256-10 v5
217