Completing The Test; Frequency Time Accumulation Protection Function Ftaqfvr (81A)235; Verifying The Settings - ABB REG670 Commissioning Manual
Relion 670 series, generator protection
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- Technical manual (1298 pages) ,
- Applications manual (780 pages) ,
- Commissioning manual (302 pages)
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1MRK 502 073-UUS A
13.7.3.2
13.7.4
13.7.4.1
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to
Disabled. Restore connections and settings to their original values, if they were
changed for testing purposes.
Frequency time accumulation protection function FTAQFVR
(81A)
Prepare the IED for verification of settings as outlined in section "Overview" and
section "Preparing for test" in this chapter.
Verifying the settings
Time measurement and the injection of current and voltage can be done using a
common test equipment.
Verification of the PICKUP value and time delay to trip
1.
Connect the test set for the injection of three-phase currents and three-phase
voltages to the appropriate current and voltage terminals of the IED.
2.
Ensure that the settings in the IED are appropriate, especially the
PickupCurrentLevel, FreqHighLimit, FreqLowLimit, VHighLimit and VLowLimit
setting.
3.
Supply the IED with three-phase currents and voltages at their rated value.
4.
Slowly decrease the frequency of the applied voltage until it crosses the frequency
high limit and the BFI_3P signal appears.
5.
Check that the FREQOK signal appears.
6.
Compare the trip value to the set frequency high limit value.
7.
Decrease the frequency of the applied voltage until it crosses the frequency low
limit and the BFI_3P signal disappears.
8.
Check that the FREQOK signal disappears.
9.
Compare the reset value to the set frequency low limit value.
10. Readjust the frequency of the applied voltage (with steps of 0.001 Hz/s) to a value
within the set frequency band limit.
11. Ensure that the BFI_3P signal reappears.
12. Wait for a time corresponding to tCont and ensure that the TRIP and TRIPCONT
signals are generated.
13. Measure the time delay for the TRIP signal and compare it to the set value.
Testing functionality by secondary injection
Section 13
M16256-39 v4
GUID-F7BD8E10-EF88-4698-87F4-0D4365004705 v2
GUID-864636E0-6399-44E1-BD2C-C2113FB78C61 v3
235
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