Performing Calibration - ABB Relion 670 Series Installation And Commissioning Manual

Section 10
Calibrating injection based sensitive rotor earth fault protection
10.4
110
IEC11000222 V1 EN
Figure 66: 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 67: 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

Voltage and current signal
Ffunction status field. Errors and
staus and TRIP indication
abnormalities are displayed in order
1MRK 502 029-UEN A
IEC11000222-1-en.vsd
to simplify trouble shooting.
IEC11000045-1-en.vsd
Installation and commissioning manual