Completing The Test; Through Fault Monitoring Ptrsthr (51Tf); Verifying The Signals And Settings - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UUS Rev. K
4. Supply the IED with three-phase currents slightly more than the rated value.
5. Note the hot spot temperature (HPTMPMAX) and maintain it for another 1 hour.
6. Check the LOLINDAY and LOLINYRS outputs after 1 hour and compare it with the calculated loss
of life value using IEC standard method.
11.13.6.2

Completing the test

Continue to test another function or end the test by changing the Test mode setting to Disabled. Restore
connections and settings to their original values, if they were changed for testing purposes.
11.13.7

Through fault monitoring PTRSTHR (51TF)

Prepare the IED for verification of settings outlined in Section
11.13.7.1

Verifying the signals and settings

The voltage or current can be injected using a common test equipment.
Verifying the through fault detection
1. Supply the IED with three-phase current at rated value.
2. Ensure that the relevant settings for through fault detection such as W1 I pickup, W2 I pickup and
W3 I pickup are set correctly.
3. Ensure that the BLOCK and INHIBIT inputs are not activated.
4. Set t_MinTripDelay as 0 s to check the pickup level of through fault detection.
5. Slowly increase any phase current of any winding until ALARM signal appears.
6. Compare the injected phase current value with the set threshold limit value.
7. Bring the injected three-phase currents at the rated value.
8. Change the t_MinTripDelay setting to a particular value.
9. Slowly increase any phase current of any winding to the threshold limit and wait until the ALARM
signal appears.
10. Compare the wait time with the set t_MinTripDelay value.
11. Bring the injected three-phase currents to the rated value.
Verifying the fault I
1. Supply the IED with three-phase current at rated value.
2.
Ensure that the relevant settings for fault I
set correctly.
3. Ensure that the BLOCK and INHIBIT inputs are not activated.
4. Slowly increase any phase current of any winding until ALARM signal appears.
5. Continue to inject the same level of current until the I2TALM signal appears.
6. Compute the time between the ALARM signal raise to I2TALM signal raise and multiply with the
squared injected current.
7. Compare the calculated value with the set MaxI2tWx value.
8. Bring the injected three-phase currents to the rated value.
9.
Ensure that the relevant settings for fault cumulative I
MaxI2tCmlW2 and MaxI2tCmlW3 are set correctly.
10. Slowly increase any phase current of any winding to the threshold limit and wait until the ALARM
signal appears.
11. Continue to inject the same level of current until the CMLI2TALM signal appears.
Bay control REC670
Commissioning manual
2 2
t and cumulative I t alarms
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"Preparing the IED to verify
2
t alarm such as MaxI2tW1, MaxI2tW2 and MaxI2tW3 are
2
t alarm such as MaxI2tCmlW1,
Section 11
Testing functionality by secondary injection
GUID-46EC57EA-375B-4DBD-BE18-914156083384 v1
GUID-7AE60CB5-3CD5-4FE2-8D54-664AA78DD2DE v1
GUID-079BCF22-469C-42EA-B857-E28154EC13D9 v1
settings".
GUID-0295EF7C-217E-4400-B7C2-68C00A38ADF3 v1
GUID-148CA255-735B-42B3-9046-AD91B20DB261 v1
GUID-D7BF8A0C-17CC-49E3-B101-AB719D0822CC v1
205