6.4
Performing calibration
1.
From the
Calibration
tab, select the first sub tab, i.e.
Step1: Calibration step
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.
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.
4.
When the bar has reached the stability region (turned green), select the
Submit
button.
ICT automatically shifts to the second calibration sub tab,
Step2: Calibration
step 2
.
Stability region
indicator bar
IEC11000047-1-en.vsd
GUID-3C7F0567-2367-46E4-9606-FCFC7408DAA0 V1 EN
Figure 12:
ICT calibration tab 1 including the stability region indicator bar
5.
Attach an 10kΩ known fault (10kΩ resistance to ground).
6.
Type 10000 in the real part of the
Connected impedance
field and leave the
imaginary part field empty.
This informs the ICT that we have attached 10kΩ pure resistive impedance.
7.
In the ICT toolbar, select the
Start reading from IED
button.
1MRK502053-UEN B
Section 6
Calibrating injection based sensitive rotor earth fault protection
Generator protection REG670 2.0 IEC
61
Commissioning manual
Summary of Contents for REG670 2.0 IEC
Page 1: ...Relion 670 series Generator protection REG670 2 0 IEC Commissioning manual ...
Page 2: ......
Page 16: ...10 ...
Page 30: ...24 ...
Page 58: ...52 ...
Page 62: ...56 ...
Page 76: ...70 ...
Page 90: ...84 ...
Page 94: ...88 ...
Page 108: ...102 ...
Page 246: ...240 ...
Page 252: ...246 ...
Page 267: ...261 ...