Toshiba GR200 Series - (v) Setting [APPL-CTSELECT] = 2 CT

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1036 -
IED
I
a
DIF function
Setting [APPL-CTSELECT] = 1CT
Busbar
Three-phase currents
A
C
B
VCT
CT
I
a
I
b
I
c
1CT
Feeder
I
b
I
c
CB
I
a2
I
b2
I
c2
Figure 5.2-12 1CB arrangement with [APPL-CTSELECT]=1CT
IED
I
a
DIF function
Setting [APPL-CTSELECT] = 1CT
Busbar
Three-phase currents
A
C
B
VCT
CT
I
a
I
b
I
c
Feeder#1
I
b
I
c
Feeder#2
Busbar
CB#2
CB
CB#1
I
a2
I
b2
I
c2
1CT
2CT
Figure 5.2-13 Paralleling connected CTs with [APPL-CTSELECT]=1CT
Note: The setting [APPL-CTSELECT] is just available for VCT11B.
(v) Setting [APPL-CTSELECT] = 2CT
Figure 5.2-14 illustrates the operation in the 1.5CB arrangement when two three-phase
currents can be injected separately for the VCT. The two three-phases currents are composited
in the IED.