36
Example 5.
Feeder terminal
531 C3 protecting
the incoming feeder
cubicle and the
busbar system.
L1
L2 L3
Ι
O
O
I
II
2)
1)
110V
X0/21
X0/2
3I>
3I>>
U1
U2
U3
INPUT12
INPUT11
INPUT8
INPUT9
TRIP
SIGNAL 2
SIGNAL 3
CLOSE 1
110V
IL1
IL2
IL3
Io
Uo
IRF
SPAC 531 C3
U4
SIGNAL 1
SIGNAL 4
OPEN 2
CLOSE 2
OPEN 3
CLOSE 3
OPEN 4
CLOSE 4
OPEN 5
CLOSE 5
OPEN 6
CLOSE 6
U12
U23
U31
INPUT10
SIGNAL 5
O
I
O
I
O
I
O
I
O
I
INPUT13
SIGNAL 6
X0/1
X0/4
X0/5
X0/6
X0/7
X0/8
X0/9
X0/25
X0/26
X0/27
X0/28
X0/29
X0/30
X0/13
X0/14
X0/15
X0/16
X0/17
X0/18
X0/19
X0/20
OPEN 1
X1/4
X1/3
X1/7
X1/6
X2/1
X2/3
X2/2
X2/4
X2/6
X2/5
X2/7
X2/9
X2/8
X1/8
X1/10
X1/9
X3/11
X3/12
X3/13
X3/14
X3/15
X3/16
X3/17
X3/18
X4/11
X4/12
X4/13
X4/14
X4/15
X4/16
X4/17
X4/18
X5/11
X5/12
X5/13
X5/14
X5/15
X5/16
X5/17
X5/18
X6/1
X6/2
X6/3
X6/4
X3/7
X3/8
X3/6
X4/7
X4/8
X4/6
X3/9
X3/10
X4/10
X4/9
INPUT3/I
INPUT3/O
INPUT2/I
INPUT2/O
INPUT1/I
INPUT1/O
INPUT6/I
INPUT6/O
INPUT5/I
INPUT5/O
INPUT4/I
INPUT4/O
INPUT7/I
INPUT7/O
BS1
BACTRL
BS2
X1/12
X1/11
X2/12
X2/11
X2/10
X3/2
X3/3
X3/4
X3/5
X3/1
X4/2
X4/3
X4/4
X4/5
X4/1
X5/2
X5/3
X5/4
X5/5
X5/7
X5/8
X5/6
X6/7
X6/8
X6/9
X6/10
X5/10
X5/9
INPUT14
(ARINH)
(E)
P
Q
SERIAL
BUS
A
B
C
D
E
F
U11
U5
U6,
U7,
U8,
U9
1A
5A
1A
5A
X0/3
Rx
Tx
SPA-ZC 17
1A
5A
1A
5A
110V
100V
110V
(
(
X1/1
X1/2
(
(
U10
+
-
+
-
+
+
100V
100V
100V
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
X5/1
O <-> I
1) Blocking signal to overcurrent protection of power transformer HV side
2) Blocking signal from overcurrent protection of outgoing feeders
Fig. 16. Feeder terminal SPAC 531 C3 protecting the incoming feeder cubicle and the busbar
system.