Launching Injection Commissioning Tool (Ict) - ABB REG670 Commissioning Manual

Section 6
Calibrating injection based sensitive rotor earth fault protection
6.3
66

Launching injection commissioning tool (ICT)

1. To launch the Injection commissioning tool (ICT), right-click REG670 in the
PCM plant structure and select the Injection commissioning.
2. In the ICT toolbar, select the Rotor Earth Fault function.
IEC11000222 V1 EN-US
Figure 9: 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
rotor circuit. All wirings shall be finalized and they shall be the definitive ones.
All primary and secondary devices shall be connected and switched on. All
grounding of generator shall be removed. The generator shall be in a condition
that is as close as possible to the normal operating condition.
5. Activate the injection by turning the injection switch to on position on the
injection unit REX060.
6. Write the value of the "Gain" according to the setting in REX060. Select the
Start reading values 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.
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
1MRK 502 073-UUS A
GUID-15CAE2A3-FA17-4119-9188-824C7F309D4B v2
IEC11000222-1-en.vsd
Commissioning manual