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VCT4B
(ii)
Figure 5.4-3 shows the VCT4B type, which agrees with five voltages and four currents inputs.
VCT4B
1
Current
I
L1
2
3
Current
I
L2
4
5
Current
I
L3
6
7
Current
Ise
8
9
Voltage
V
L1
10
11
Voltage
V
L2
12
13
Voltage
V
L3
14
15
Voltage
Ve
16
17
Voltage
Vs
18
Note:
The channel number is used to represent the terminal location when setting
(1)
the ratio of the CT or the VT. See
Note:
CH4 is provided for the sensitive earth fault protection (Chap. 5.4.5(iii))
(2)
Note:
The residual quantities can be derived by the means to the calculation when
(3)
Ise signal is not given straightforward. See
current for SEF
Note:
Reference voltages can be used in Voltage check (VCHK) function; see
(3)
Chapter
Terminal
screw
numbers
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Figure 5.4-3 Transformer module (VCT4B)
(Chap. 5.4.5(ii)).
Relay applications: Voltage check relay
- 629 -
Types of
Input signals
inputs
I
Current
L1
Current
I L2
Current
I L3
(2)
Current
I se
(for SEF)
Voltage
V L1
Voltage
V L2
Voltage
V L3
(3)
Voltage
V e
(4)
Voltage
V s
VCT ratio setting
(Chap. 5.4.3)
CT for zero-phase sequence
(→p. 280).
6F2T0207 (0.01)
AC analog input
channels
(1)
Ch1
Ch2
Ch3
Ch4
Ch5
Ch6
Ch7
Ch8
Ch9
.
.
GRE200 (5,6)
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