ABB Relion 670 Series Commissioning Manual page 253

1MRK 506 371-UUS E
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
and
3. Ensure that the BLOCK and INHIBIT inputs are not activated.
4. Set
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
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
11. Bring the injected three-phase currents to the rated value.
Verifying the fault
1. Supply the IED with three-phase current at rated value.
2.
Ensure that the relevant settings for fault
MaxI2tW3 are 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
8. Bring the injected three-phase currents to the rated value.
9.
Ensure that the relevant settings for fault cumulative
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.
12. Compute the time between the ALARM signal raise to CMLI2TALM signal raise and multiply
with the squared injected current.
13.
Add the calculated value with previously calculated
14. Compare the calculated value with the set
15. Bring the injected three-phase currents to the rated value.
11.13.7.2 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.
11.13.8 Current harmonic monitoring CHMMHAI(ITHD)
Prepare the IED for verification of settings outlined in Section
settings".
Line distance protection REL670
Commissioning manual
W3 I pickup are set correctly.
t_MinTripDelay as 0 s to check the pickup level of through fault detection.
t_MinTripDelay setting to a particular value.
2
I t and cumulative I
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t_MinTripDelay value.
2
t alarms
2
I t alarm such as MaxI2tW1 , MaxI2tW2 and
MaxI2tWx value.
2
I t alarm such as MaxI2tCmlW1 ,
2
I t value.
MaxI2tCmlWx value.
"Preparing the IED to verify
Testing functionality by secondary injection
GUID-148CA255-735B-42B3-9046-AD91B20DB261 v1
W1 I pickup , W2 I pickup
GUID-D7BF8A0C-17CC-49E3-B101-AB719D0822CC v1
GUID-8F01A787-4FDA-48BA-8045-5DC678C9410C v1
TestMode setting to Disabled .
GUID-692151F8-812B-4B32-AE86-E7A4E4B0101B v1
GUID-804F309E-B02F-4F6B-B0FC-2C7AE3F12DBA v2
Section 11
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