ABB REG670 2.0 IEC Commissioning Manual page 66

Section 6
Calibrating injection based sensitive rotor earth fault protection
60
IEC11000222 V1 EN
Figure 10: ICT toolbar
3. Select the Installing tab if it was not already selected by default after the ICT
was launched.
The first thing that needs to be ensured prior to calibration is that the measured
voltage and current signal on the injected frequency is present/found, and that
the amplitude of these is within the permitted limits.
4. Make sure you have not attached any additional impedance in parallel with the
stator circuit.
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 11: 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.
Voltage and current signal
Ffunction status field. Errors and
staus and TRIP indication
abnormalities are displayed in order
1MRK502053-UEN B
IEC11000222-1-en.vsd
to simplify trouble shooting.
IEC11000045-1-en.vsd
Generator protection REG670 2.0 IEC
Commissioning manual