Toshiba GR200 Series - (iii) Setting [APPL-Ves2] = Off; (iv) Setting [APPL-CTSELECT] = 1 CT

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1035 -
A
C
B
VCT
IED
VT
Va
V
L1
V
L2
V
L3
Relay application
V
s2
/V
e
Vb
Vc
V
s
Reference voltage
VTs on busbar
Busbar
Three-phase voltages
V3
Reference voltage
V4
Zero sequence
phase voltage (3V0)
Computation
VTs on feeder
Feeder#1
Feeder#2
Busbar
CB#1
CB#2
CB
Figure 5.2-10 Computation of residual voltage
(iii) Setting [APPL-Ves2] = Off
If no voltage is applied at the Vs2/Ve terminal, the user can set Off for the setting [APPL-
VTes2].
A
C
B
VCT
VTs on feeder
IED
VT
Va
V
L1
V
L2
V
L3
Relay application
V
s2
/V
e
Vb
Vc
Setting [APPL-Ves2]=Off
V
s
Reference voltage
VTs on busbar
Busbar
Feeder
Three-phase voltages
V3
Computation
CB#1
Zero sequence
phase voltage (3V0)
Figure 5.2-11 Connection with one VT on the busbar
(iv) Setting [APPL-CTSELECT] = 1CT
Figure 5.2-12 illustrates the operation in 1CB arrangement using the setting [APPL-
CTSELECT]=1CT. Figure 5.2-13 shows that composites currents (Ia, Ib, and Ic) are generated
physically by wiring for the operation in 1.5CB arrangement.