ABB Relion 670 Series Commissioning Manual page 251

1MRK 504 165-UEN E
4. Make sure that the hot spot temperature (HPTMPMAX) is more than the set value of
TOTEMP.
5. Activate the AMBVALID input and set some temperature value in AMBTEMP input.
6. Make sure that the top oil temperature calculated (TOTCALC) is more than the set value
of AMBTEMP.
Verifying WARNINGx and ALARMx outputs
1. Connect the test set for injection of three-phase currents to the appropriate current
terminals of the IED.
2. Make sure that the settings in the IED are appropriate, especially the warning
temperature levels (
3. Supply three-phase currents nearly zero to the IED and take note of hot spot temperature
(HPTMPMAX).
4. Make sure that the WARNINGx and ALARMx signals remains low.
5. Supply three-phase currents slightly more than the rated value to the IED and take note
of hot spot temperature (HPTMPMAX).
Observe the maximum permitted overloading of the current circuits in the IED.
6. Check the time until the warning limit has reached
Monitor the signal WARNING1 until it appears on the corresponding binary output.
7. Compare the measured temperature (HPTMPMAX) with
8. check the time until the warning limit has reached
Monitor the signal WARNING2 until it appears on the corresponding binary output.
9. Compare the measured temperature (HPTMPMAX) with
10. Wait for a time corresponding to
signal. Make sure that the ALARM1 signal appears.
11. Note the time taken for the appearance of ALARM1 signal from the appearance of
WARNING1 signal, and compare it with set value (
12. Wait for a time corresponding to
signal, and make sure that the ALARM2 signal appears.
13. Note the time taken for the appearance of ALARM2 signal from the appearance of
WARNING2 signal, and compare it with set value (
14. Activate the BLKWRN binary input. The WARNING1 and WARNING2 signals should
disappear.
15. Activate the BLKALM binary input. The ALARM1 and ALARM2 signals should disappear.
16. Reset the BLKWRN and BLKALM binary inputs. Once again warning and alarm signals
should appear.
17. Reduce the three-phase currents suddenly to value lower than the rated current and take
note of hot spot temperature.
18. Check the warnings reset limit (
signals until they disappears on the corresponding binary outputs. Take the HPTMPMAX
readings and compare with the reset level settings.
Verifying LOLINDAY and LOLINYRS outputs
1. Connect the test set for injection of three-phase currents to the appropriate current
terminals of the IED.
2. Make sure that the settings in the IED are appropriate, especially set the
setting as Enable,
3. Activate the TOTVALID input and set some temperature value in TOTEMP input.
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.
Transformer protection RET670
Commissioning manual
WrnHPTmpLevX ) and alarm time settings ( tDelayToAlarmX ).
tDelayToAlarm1 from the appearance of WARNING1
tDelayToAlarm2 from the appearance of WARNING2
HystAbsHPT ). Monitor the WARNING1 and WARNING2
TimeToUpdate setting as 1 hour and AgeingRateMeth setting as IEC .
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Testing functionality by secondary injection
GUID-85CA2ABF-13A9-4A4B-8E3F-AEF71D091E32 v1
WrnHPTmpLev1 level during injection.
WrnHPTmpLev1 setting.
WrnHPTmpLev2 level during injection.
WrnHPTmpLev2 setting.
tDelayToAlarm1 ).
tDelayToAlarm2 ).
GUID-C1B747CC-F961-4C6B-BB72-5F32B3FB3F06 v1
Section 11
EnaAgeCalc
245