REM 543 Protection,
Monitoring and Control
Page 25
Technical Reference Manual
Part 1, General
ABB Network Partner
The letters b and c after the signal type are intended to distinguish two signals of the
same type.
7
Current
Transformer
CT4, CT5 or
CT6
(I
n
= 1 A/5 A)
Voltage
Transformer
VT1
(U
n
=100V/
110V/115V/
120V)
RS type 1, 2, 3
VD type 1, 2, 3
Not in use, I
L1
,
I
L2
, I
L3
, I
L1b,
I
L2b,
I
L3b,
I
0
,
I
0b
, U
0
, U
12
,
U
23
, U
31
,
U
12b
, U
12c
,
U
1
, U
2
, U
3
,
U
1b
, U
1c
8
Current
Transformer
CT5, CT6 or
CT7
(I
n
= 1 A/5 A)
Voltage
Transformer
VT2
(U
n
=100V/
110V/115V/
120V)
RS type 1, 2, 3
VD type 1, 2, 3
Not in use, I
L1
,
I
L2
, I
L3
, I
L1b,
I
L2b,
I
L3b,
I
0
,
I
0b
, U
0
, U
12
,
U
23
, U
31
,
U
12b
, U
12c
,
U
1
, U
2
, U
3
,
U
1b
, U
1c
9
Current
Transformer
CT6, CT7 or
CT8
(I
n
= 1 A/5 A)
Voltage
Transformer
VT3
(U
n
=100V/
110V/115V/
120V)
RS type 1, 2, 3
VD type 1, 2, 3
Not in use, I
L1
,
I
L2
, I
L3
, I
L1b,
I
L2b,
I
L3b,
I
0
,
I
0b
, U
0
, U
12
,
U
23
, U
31
,
U
12b
, U
12c
,
U
1
, U
2
, U
3
,
U
1b
, U
1c
10
Voltage
Transformer
VT1, VT2,
VT3 or VT4
(U
n
=100V/
110V/115V/
120V)
RS type 1, 2, 3
VD type 1, 2, 3
Not in use, I
L1
,
I
L2
, I
L3
, I
L1b,
I
L2b,
I
L3b
, U
0
,
U
12
, U
23
, U
31
,
U
12b
, U
12c
,
U
1
, U
2
, U
3
,
U
1b
, U
1c
11
Calculated
neutral current
I
os
=
I
L1
+I
L2
+I
L3
12
Calculated
residual volt-
age U
os
=
U
1
+U
2
+U
3
Measuring units
Ch No.
Current
Transformer
(CT)
Voltage
Transformer
(VT)
Rogovski coil/-
sensor (RS)
Voltage divider
(VD)
Signal type
(selectable
alternatives)