ABB Industrial IT enabled REX 521 Technical Reference Manual, General page 44
Protection relay
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Also See for Industrial IT enabled REX 521:
- Technical reference manual, standard configurations (250 pages) ,
- Technical reference manual, general (76 pages) ,
- Operator's manual (32 pages)
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5(;
*) Connected to U12b in H01S and H03S
**) The jumper is not assembled by default
when the protection relay is delivered
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Technical Reference Manual, General
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X1.1
27
25
24
22
21
19
18
100V
16
15
0,2A
14
1A
13
12
1A
11
5A
10
9
8
7
6
5
4
3
2
1
Voltage input, U
X2.1
3
Voltage input, U
X2.2
2
Voltage input, U
X2.3
1
Current input, I
X2.4
L3
Current input, I
X2.5
L2
Current input, I
X2.6
L1
X4.2
5
6
7
8
9
10
11
12
13
14
15
16
17
18
X3.1
1
2
9
10
VT1
*)
U
0
CT5
I
0B
CT4
I
0
Sensor
VD3
DIFF
VD2
Sensor
DIFF
Sensor
VD1
DIFF
Sensor
RS3
DIFF
Sensor
RS2
DIFF
Sensor
RS1
DIFF
TCS1
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI9
DATA A
RS-485
DATA B
1MRS 751108-MUM
X4.1
+
1
ACFail
Mains
2
-
TempAlarm
5
I R F
4
3
8
7
6
SO1
10
11
SO2
9
12
13
PO1
14
15
PO2
17
18
PO3
X4.2
4
3
2
HSPO1
1
X3.2
SERIAL BUS
X3.3
SERIAL BUS
**)
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