2.25
Date Code 20081022
Instruction Manual
SEL-787 Relay
Installation
AC/DC Control Connection Diagrams
Figure 2.23
Example DC Connections
A01 A10 A12
A0
3
A05
A0
7
C01
C0
3
C05
C0
7
52
-1
52
-2
a
a
A01 A11
A04
A06
A08
C0
2
C04
C06
C08
Re
la
y
Fail
ANN
IN101 IN10
2
Powe
r
Supply
86T
b
86T
op
86T
a
86T
a
–DC
–DC
-DC
-DC
-DC
SEL
-7
87
(P
artial)
Not
e 1:
As
sume
s an op
tional 4DI/
4DO c
ar
d in Slo
t C f
or OUT3
01—OUT3
04
.
Not
e 2:
R
emaining 4 input
s (IN3
01–IN3
04) and 1 output (
OUT10
2)
S
e
ttings r
equir
ed f
or the abo
v
e implement
ation:
52
-1
Close
Cir
cuit
52
-2
Close
Cir
cuit
52
-1
52
-2
a
a
52
-1
52
-2
TC
TC
+DC
+DC
+DC
+DC
+DC
OUT101 OUT10
2
OUT10
3
OUT3
01
OUT3
02
OUT3
03
OUT3
04
OUT101 := HALARM
OUT101F
S := Y
OUT10
2 := 0
OUT10
3 := TRIP
XFMR
OUT10
3
F
S := N
5
2A1 := IN101
5
2A2 := IN10
2
OUT3
01 := TRIP1
OUT3
0
2 := TRIP2
OUT3
0
3 := CL
O
SE1
OUT3
04 := CL
O
SE2
Summary of Contents for SEL-787
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