IEC11000045-1-en.vsd
Frequency found by
the function
Voltage and current signal
staus and TRIP indication
Ffunction status field. Errors and
abnormalities are displayed in order
to simplify trouble shooting.
GUID-84947C77-215F-4007-AAC0-9433B8444396 V1 EN-US
Figure 10: 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.
6.4 Performing calibration
GUID-DE96CE75-A268-4FE1-AD9D-093EA1F2ECBA v2
1. From the Calibrating 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
rotor.
3. From the ICT toolbar, select the Start reading from IED button.
The generator shall be in a condition that is as close as possible to the normal
operating condition as during the Installation.
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 repeated 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.
Clicking the Submit button the result is stored for later calculations. ICT
automatically shifts to the second calibration sub tab, Step 2: Measurement 2.
1MRK 502 073-UUS A Section 6
Calibrating injection based sensitive rotor earth fault protection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 67
Commissioning manual
To Next Page
Loading...
