Schweitzer Engineering Laboratories SEL-787-2 - Page 33

Schweitzer Engineering Laboratories, Inc. SEL-787-2, -3, -4 Data Sheet
33
Figure 47 Typical DC Control Connection Diagram for the Three Terminal Applications
Power
Supply
Note 1: Assumes an optional 8 DO card in Slot C for OUT301–OUT308 and 4 DI/4 DO in Slot D for IN401–IN404 and OUT401–OUT404. Note 2: Remaining inputs IN101, IN102, IN404 and outputs OUT102, OUT304, and OUT308 are spare. Settings required for the above implementation: OUT101 := HALARM OUT103FS := N OUT302 := TRIP2 OUT101FS := Y 52A1 := IN401 OUT303 := TRIP3 OUT102 := 0 52A2 := IN402 OUT305 := CLOSE1 OUT103 := TRIPXFMR 52A3 := IN403 OUT306 := CLOSE2 OUT301 := TRIP1 OUT307 := CLOSE3
–DC
IN401
IN402
D09
D11
A01
A02
D12
A03
A04
OUT101 OUT102
OUT103
OUT301 OUT302
OUT305 OUT306
A05
A07
C01
C03
C09
C11
SEL-787
(Partial)
A06
A08
C02
C04
C10
C12
Relay
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
Circuit
52-2
Close
Circuit
–DC –DC –DC
–DC
+DC
+DC +DC +DC +DC
IN403
D13
OUT307
C13
C14
52-3
Close
Circuit
–DC
+DC
OUT308
C15
C16
OUT303
C05
C06
86T
a
52-3
a
52-3
TC
–DC
+DC
OUT304
C07
C08
D10
D14
52-1
a
52-2
a
52-3
a