IEC11000221-1-en.vsd
IEC11000221 V1 EN-US
Figure 13: ICT calibration tab 4
13. Before proceeding any further make sure that you have removed the short-circuit that
was applied during the Step 3 of the calibration.
14. To finish the calibration process, select the Submit to Parameter setting button.
15. In Parameter setting, write the newly acquired parameters to IED.
6.5
Acquiring references
GUID-AC1645F9-9B48-4F6A-9D81-BDCB7382533E v3
A logic outside the protection function is needed in order to detect different operation
conditions of the generator and select the proper impedance reference. Therefore changing/
switching impedance reference is not described here but in a separate application note
1MRG005030 Application example for injection based 100% Stator EF and Sensitive Rotor EF
protection.
The injection commissioning tool (ICT) helps the commissioning engineer to acquire an
additional reference for different conditions of the generator. The below description assumes
that reference 1 was set during calibration and that the second reference must be set now.
If the second reference impedance shall be defined and the logic to switch from the first
impedance to the second one is already active in the configuration, then set the second
reference impedance equal to the first reference impedance before starting the procedure in
the Commissioning tab. The trip of the function should be blocked, as advised by the pop-up
window of ICT.
1.
Ensure that the generator is in a state where the reference must be set (for example
normal operation).
2.
To start, select the Commissioning tab.
3.
In the Reference impedance selection drop-down menu. select Reference 2.
1MRK 502 067-UEN B
Section 6
Calibrating injection based sensitive rotor earth fault protection
57
Commissioning manual
