4
Connection
diagram
Fig. 2. Connection diagram for the combined overcurrent and earth-fault relay SPAJ 142 C with
all the relay matrix switchgroups shown.
61
62
SPAJ 142 C
63
25
27
28
1
2
3
4
5
6
7
8
9
0.2 A
1 A
L1
L2
L3
70
71
72
0
65
66
U
+ (~)
- (~)
3I>
3I>>
Io>
Io>>
IRF
I/O
68
69
77
78
IRF
SIGNAL 2
-
+
TRIP
74
75
START 1
80
81
10
11
SGB/1
SGB/2
SGB/3
SGB/4
SGB/6
SGB/7
SGB/5
LATCHING
SIGNAL 1
START 2
RESET
I
-
I
0
+
+
+
B
+
C
+
F
+
E
+
D
+
A
U1
1
1
T2
T4
T6
T8
T1
T3
T5
T7
RC SETTINGS
SGB/8
SGF/4
0.1...1s
SGR2/8
SGR1/6
SGR1/8
SGR1/2
SGR1/4
U3
TRIP
R
U2
U1
T9
TS2
SS3
SS2
SS1
TS1
SPA-ZC_
Rx
Tx
SERIAL
PORT
+
-
1 A
5 A
1 A
5 A
1 A
5 A
SGR2/6
SGR2/4
SGR2/2
1
SGR2/7
SGR2/5
SGR2/3
SGR2/1
1
SGR1/7
SGR1/5
SGR1/3
SGR1/1
1
SGR3/8
SGR3/7
SGR3/6
SGR3/5
SGR3/4
SGR3/3
SGR3/2
SGR3/1
aux
~
EXTERNAL
CONTROL