Toshiba GR200 Series Instruction Manual page 927

Setting VCT ratio
5.2.3
As input sources are transformed with various VTs and CTs in the power system, the user shall
set each VT or CT ratio at each VCT terminal.
Setting a ratio for the VT
(i)
When the VT quantity applied at the VCT terminal, a ratio of the primary voltage to the
secondary voltage should be set. A voltage is applied at the first terminal (Ch1) at VC1 alpha-
numeric reference, the user should set the ratio for the setting [AI1_Ch1_Ratio]. For example,
the user is requires to set a value '3636' for the [AI1_Ch1_Ratio] when the primary is 400kV
and the secondary is 110V (i.e., 400kV/110V=3636). The channel position on the VCT is
discussed in the preceding section
Setting a ratio for the CT
(ii)
When the CT quantity flows into the VCT terminal, a ratio of the primary current to the
secondary current should be set. For example, the user is required to set a value '4000' for the
[AI1_Ch1_Ratio] when the primary is 4000A and the secondary is 1A (i.e., 4000/1=4000).
Setting list
(iii)
Setting of AC analog input(Function ID: 200201)
Setting item
VC1 AI1_Ch1_Ratio
alpha-numeric AI1_Ch2_Ratio
reference AI1_Ch3_Ratio
AI1_Ch4_Ratio
AI1_Ch5_Ratio
AI1_Ch6_Ratio
AI1_Ch7_Ratio
AI1_Ch8_Ratio
AI1_Ch9_Ratio
AI1_Ch10_Ratio
AI1_Ch11_Ratio
AI1_Ch12_Ratio
AI1_Ch13_Ratio
AI1_Ch14_Ratio
†Note: For more information, see Chapter
‡Note: The number of AC analog input channels depends on the configuration of the VCT
type and the VCT slot. Thereby, the user has to set the value of the VCT ratio
corresponding to a specific auxiliary VT/CT.
VCT .
Unit
Range
s
1.000 to 20,000.000 – For AC analog input ch#1 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#2 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#3 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#4 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#5 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#6 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#7 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#8 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#9 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#10 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#11 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#12 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#13 at VCT#1
1.000 to 20,000.000 – For AC analog input ch#14 at VCT#1
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Contents
User interface: AC analog input.
6F2S1915 (0.46)
Default setting
Notes
value
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
GRZ200 (Soft 031 & 032)