ABB REG670 Commissioning Manual page 285

1MRK 502 073-UUS A
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
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 (WrnHPTmpLevX) and alarm time settings (tDelayToAlarmX).
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 WrnHPTmpLev1 level during
injection. Monitor the signal WARNING1 until it appears on the corresponding
binary output.
7. Compare the measured temperature (HPTMPMAX) with WrnHPTmpLev1
setting.
8. check the time until the warning limit has reached WrnHPTmpLev2 level during
injection. Monitor the signal WARNING2 until it appears on the corresponding
binary output.
9. Compare the measured temperature (HPTMPMAX) with WrnHPTmpLev2
setting.
10. Wait for a time corresponding to tDelayToAlarm1 from the appearance of
WARNING1 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 (tDelayToAlarm1).
12. Wait for a time corresponding to tDelayToAlarm2 from the appearance of
WARNING2 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 (tDelayToAlarm2).
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 (HystAbsHPT). Monitor the WARNING1 and
WARNING2 signals until they disappears on the corresponding binary outputs.
Take the HPTMPMAX readings and compare with the reset level settings.
Testing functionality by secondary injection
Section 13
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