Littelfuse Startco FPU-32, Manual

Page: 21 / 90

Page 3-5
FPU-32 Feeder Protection Unit
Rev. 2-A-103014
System Wiring
a) RESIDUAL CONNECTION
FPU-32
S
H
E
F
C
O
M
C
B A
29 21 22 16 15 14 13
BRO
WN
BLUE GREEN RED WHITE BLA
CK
1A 5A
27 26 25 24 23 22 21 20 19 18 17 16 15 14 13
C
O
M
C B
A
E
F
2
E
F
1
Y
X
E
S 5 R 1
MPU-CIM
R S 5 1 R S 5 1 R S 5 1
1 2 3 4 5 6 7 8 9 10 11 12
5A
5A
5A
1A
1A
1A
CT A CT B CT C
SHORTING SCREWS
A, B, & C MUST
NOT BE REMOVED.
R TERMINALS ARE
GROUNDED THROUGH
TERMINAL 22.
b) TWO-CT CONNECTION
1A
5A
27 26 25 24 23 22 21 20 19 18 17 16 15 14 13
C
O
M
C B A
E
F
2
E
F
1
Y X
E
S 5
R
1
MPU-CIM
R S 5 1 R S 5 1 R S 5 1
5A
5A
5A
1A
1A
1A
CT A CT C
1-A OR 5-A
EARTH-FAULT
CT
SHORTING SCREWS
A, B, & C MUST
NOT BE REMOVED.
R TERMINALS ARE
GROUNDED THROUGH
TERMINAL 22.
EARTH-FAULT CT MUST
NOT BE GROUNDED.
c) TWO-CT CONNECTION WITH EFCT-1 OR EFCT-2
27 26 25 24 23 22 21 20 19 18 17 16 15 14 13
C
O
M
C B
A
E
F
2
E
F
1
Y
X
E
S 5 R 1
MPU-CIM
R S 5 1
R
S 5
1
R S 5 1
5A
5A
5A
1A
1A
1A
CT A CT C
EFCT-X
SHORTING SCREWS
A, B, & C MUST
NOT BE REMOVED.
R TERMINALS ARE
GROUNDED THROUGH
TERMINAL 22.
FPU-32
S
H
E
F
C
O
M
C
B A
29 21 22 16 15 14 13
FPU-32
S
H
E
F
C
O
M
C
B A
29 21 22 16 15 14 13
BRO
WN
BLUE GREEN RED
WHITE
BLA
CK
BROWN
BLUE
GREEN RED WHITE BLA
CK
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12
FIGURE 3.7 Other MPU-CIM Connections.