6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 910 -
5.2.5
Settings for residual voltage, CT polarity, and busbar arrangements
In the IED, the residual voltage represented ‘Ve’ is given by the computation with three-phase
voltages (Va, Vb, and Vc), but the VCT is ready to obtain it exclusively using APPL-VCT
settings when the residual voltage transformer is connected with the VCT. Additionally, the
VCT has the settings for changing the CT polarity so that the user can reverse the polarity
without wiring works.
APPL-VCT
10:48
1/2
APPL-Ves2
+
Vs2
Polarity Change
>
Figure 5.2-7 APPL-VCT setting screen
(i)
Setting [APPL-Ves2] = Ve
Set
Ve
for the setting [
APPL-VTes2
], when the residual voltage transform is provided. Figure
5.2-8 illustrates the signals from the VTs on the feeder are injected for the ‘Ve’ terminal on the
VCT.
A
C
B
VCT
VTs on feeder
IED
VT
Va
VL1
VL2
VL3
VCHK function
Vs2/Ve
Vb
Vc
Residual voltage
Setting [
APPL-Ves2
]=
Ve
Vs
Reference voltage
VT on busbar
Busbar
Feeder
Three-phase voltages
V3
Ve (V0)
CB#1
Figure 5.2-8 Connection with residual VT
(ii)
Setting [APPL-Ves2] = Vs2
Figure 5.2-9 illustrates the residual voltage transform is not provided; set
Vs2
for the setting
[
APPL-VTes2
]. Note that the IED computes the voltage in zero-sequence mathematically (3V0)
using the three-phase voltages.
Summary of Contents for GR 200 Series
Page 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Page 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Page 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Page 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Page 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Page 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Page 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Page 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
Page 1563: ......