Performing Calibration - ABB REG670 2.0 IEC Commissioning Manual

1MRK502053-UEN B
7.4
Generator protection REG670 2.0 IEC
Commissioning manual
Calibrating injection based 100% stator earth fault protection
5. Activate the injection by turning the injection switch to on position on the
injection unit REX060.
6. Select the Start reading from IED button from the ICT toolbar to start
performing continuous measurements.
7. Verify that the bars/voltage levels for both the voltage and current on the injected
frequency have acceptable level.
The bars must be green and the function status field must also indicate OK.
8. Check that the actual injected frequency is close enough to the injection
frequency set on the injection unit (REX060).
If the voltage and/or current level(s)/frequencies are not reasonable, or the ICT
indicates other warnings/abnormalities in the function status field, verify that the
HW connections are proper (cables etc.), and selected gains and injection
frequency on the REX060 is properly selected. Then repeat steps 3 to 6. Note that
the FreqInjected setting in Parameter setting for the specific function must
correspond with the chosen injection frequency on the REX060 HMI for that
function.
Frequency found by
the function
GUID-84947C77-215F-4007-AAC0-9433B8444396 V1 EN
Figure 21: ICT signals and function indication panel
9. When you are ready to perform calibration, select the Submit and save in
report button. ICT will now forward a more accurate frequency to Parameter
setting. In Parameter setting, write the newly acquired parameter to IED.

Performing calibration

1. From the Calibration tab, select the first sub tab, i.e. Step1: Calibration step
1.
2. Make sure you have not attached any additional impedance in parallel with the
stator.
3. From the ICT toolbar, select the Start reading from IED button.
ICT now performs continuous measurements and after the tenth measurement it
starts to update the graph. Notice that the stability region indicator bar reduces
in size.
Voltage and current signal
Ffunction status field. Errors and
staus and TRIP indication
abnormalities are displayed in order
Section 7
to simplify trouble shooting.
IEC11000045-1-en.vsd
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