Performing Calibration - ABB REG670 Commissioning Manual

1MRK 502 073-UEN A
7.4
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Commissioning manual
Calibrating injection based 100% stator earth fault protection
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-US
Figure 20: ICT signals and function indication panel
9. When the installing procedure is successful, select the Submit and save in
report button. ICT will now forward a more accurate frequency to Parameter
setting. In the Parameter setting tool, write the newly acquired parameter to
IED.
The accurate setting of this frequency is essential for proper operation of the
protection under different operating conditions.

Performing calibration

1. From the Calibratiing tab, select the first sub tab, i.e. Step1: Measurement
1.
2. Make sure you have not attached any additional impedance in parallel with
the stator. The generator shall be in a condition that is as close as possible to
the normal operating condition as during the Installation.
3. From the ICT toolbar, select the Start reading values 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.
It is very important that calibration steps 1 to 3 is performed
in the proper order. If not, the calibration might fail. If
readings are not stable during the step, a warning to repeat the
step may be suggested; the step shall be repeat in order to
avoid that the calibration fails.
4. When the statistical error of the performed continuous measurements reaches
an acceptable value, the indicator bar reaches the stability region (turned
green) and it is allowed to select the Submit button.
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
GUID-9304B342-8BCF-49E3-8429-E64919DC8EBD v2
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