ABB SPAJ 131 C User Manual And Technical Description page 13

Example 2.
Overvoltage
protection of
an outgoing feeder
in a distribution
substation.
1 2 3 4 5 6 7 8 9
U3
SPAJ 131 C
1) Blocking signal to the overcurrent module of the busbar system
Fig. 6. Overcurrent relay SPAJ 131 C protecting an outgoing feeder in a distribution substation.
The selector switch settings are shown in the table on the next page.
+
( ~ )
Uaux
- ~
( )
BS IRF
10 11 61 62 70 71 72
~
E
U3
+ -
SGR/1
IRF
t >,k
3I>
SGB
4
5
t >>
3I>>
U1
I
II
Ι
+
0
1)
START1 SIGNAL1 TRIP2
77 78 80 81 68 69
D C
1 1
SGR
3 2 4 7 5
SS1
TS1
SS2
TS2
I/O
0
-
Ι
-
+
Rx Tx
TRIP1
SERIAL
+
PORT
65 66
B A
1 1
8
6
U2
13