ABB REG670 2.0 IEC Commissioning Manual page 68

Section 6
Calibrating injection based sensitive rotor earth fault protection
62
8. Once again, wait until the stability criteria is fulfilled, then select the Submit
button.
ICT automatically shifts to the third calibration tab, Step3: Calibration step 3.
9. Remove the known fault resistance attached earlier and apply a short circuit
instead.
10. In the ICT toolbar, select the Start reading from IED button.
11. When the stability criteria are fulfilled, select the Submit button once again.
ICT automatically shifts to the fourth calibration tab, Step4: Save calibration
factors. Here the newly calculated k1, k2 and reference 1 are presented.
12. Check in the Calibration result field that all tests have been passed.
12.1. If a failure is indicated during one or more check(s), follow the
instructions/tips provided by the ICT in the Calibration result field.
12.2. If these tips do not solve the issue, then contact ABB Support.
IEC11000221 V1 EN
Figure 13: ICT calibration tab 4
13. Before proceeding any further make sure that you have removed the short-circuit
that was applied during calibration step 3.
14. To finish the calibration process, select the Submit to Parameter setting
button.
15. In Parameter setting, write the newly acquired parameters to IED.
1MRK502053-UEN B
IEC11000221-1-en.vsd
Generator protection REG670 2.0 IEC
Commissioning manual