Page 3-1
FPU-32 Feeder Protection Unit
Rev.
2-A-103014
System
Wiring
3. S
YSTEM
W
IRING
3.1 G
ENERAL
A typical connection diagram for the FPU-32 with the
MPU-CIM is shown in Fig. 3.1.
12 11 10 9 8
1
1
1
5
5
5
S
S
S
R
R
R
7 6 5 4 3 2 1
(NOTE 6)
13 14 15 16
A B C
C
O
M
E
F
2
18 19
E
F
1
17
Y X
20 21 22 23 24 25
E S 5 R
26
1
27
EARTH FAULT
MPU
13
31
14
30
15
29
16
28
17
27
18
26
19
25
20 21 22 23 24
A
CIM
B C C
O
M
0
V
E
R
M
S
N
S
L
1
L
2
N
S
H
-
+
+
24
V
COMM
I/O MODULE
AN OUT
TIA-232 ONLY
DIG IN
E
F
A
B
L S
A
A
-
+
12 11 10 9 8 7 6 5 4 3 2 1
RELAY 2
RELAY 1
RELAY 3
PHASE C
PHASE B
PHASE A
8 1
T
A
T
B
T
C
TEMP
SOURCE
A
B
C
BREAKER
PHASE CT’S
(NOTE 7)
EARTH-FAULT CT
LOAD
(NOTE 8)
(NOTE 10)
+tº
tº
Pt100 RTD
SENSOR
(NOTE 10)
(NOTE 3)
(NOTE 4)
OUTPUT
S1
(NOTE 5)
CONTROL
CIRCUIT
SUPPLY
VOLTAGE
NOTES:
1. FPU-32 REAR VIEW SHOWN.
2. RELAYS SHOWN DE-ENERGIZED.
3. GROUND CABLE SHIELDS AT FPU-32 END ONLY.
4. GROUND OUTPUT-CABLE SHIELD AT RECEIVER
END
ONLY.
5. PROGRAMMABLE DIGITAL INPUT.
6. DOTTED LINES SHOW 1-A-CT CONNECTIONS.
7. A-B-C PHASE ROTATION REQUIRED.
8. EARTH-FAULT INPUT IS NOT POLARITY SENSITIVE.
9. OPTIONAL NETWORK COMMUNICATIONS
NOT
SHOWN.
10. ALTERNATE CONNECTION FOR PTC-THERMISTOR
SENSOR.
MPU-CIM
FPU-32
FIGURE 3.1 Typical FPU-32 Connection Diagram.
