Schweitzer Engineering Laboratories, Inc.
SEL-787-2, -3, -4 Data Sheet
33
Figure 47
Typical DC Control Connection Diagram for the Three Terminal Applications
Powe
r
Supply
Not
e 1: Assumes an optional 8 DO car
d in Slot C f
or OUT3
01–OUT3
08 and 4 DI/
4 DO in Slot D f
or IN401–IN404 and OUT401–OUT404
.
Not
e 2: R
emaining inputs IN101, IN10
2, IN404 and outputs OUT10
2, OUT3
04
, and OUT3
08 ar
e spar
e.
Set
tings r
equir
ed f
or the abo
ve
implement
ation:
OUT101 := HALARM
OUT10
3FS := N
OUT3
0
2 := TRIP2
OUT101FS := Y
52
A1 := IN401
OUT3
03
:= TRIP3
OUT10
2 := 0
52
A2 := IN40
2
OUT3
05 := CL
O
SE1
OUT10
3 := TRIP
XFMR
52A3 := IN40
3
OUT3
06 := CL
O
SE2
OUT3
01 := TRIP1
OUT3
07
:= CL
O
SE3
–DC
IN401
IN40
2
D09
D11
A01
A0
2
D12
A0
3
A04
OUT101
OUT10
2
OUT10
3
OUT3
01
OUT3
0
2
OUT3
05
OUT3
06
A05
A0
7
C01
C0
3
C09
C11
SEL
-7
87
(P
ar
tial)
A06
A08
C0
2
C04
C10
C12
R
ela
y
Fail
ANN
86T
b
86T
op
86T
a
86T
a
52
-1
a
52
-2
a
52
-1
TC
52
-2
TC
52
-1
Close
Cir
cuit
52
-2
Close
Cir
cuit
–DC
–DC
–DC
–DC
+DC
+DC
+DC
+DC
+DC
IN40
3
D13
OUT3
07
C13
C14
52
-3
Close
Cir
cuit
–DC
+DC
OUT3
08
C15
C16
OUT3
03
C05
C06
86T
a
52
-3
a
52
-3
TC
–DC
+DC
OUT3
04
C0
7
C08
D10
D14
52
-1
a
52
-2
a
52
-3
a