Page 10
DPP2U SERIES
OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Manual No. DPP2U-MAN Rev. 5
dpp2u-man-rev5-0719.indd
9.3
Recommended Input Cable Sizes and Lugs
The following table details the recommended cable size for various input current.
MAXIMUM
CURRENT
CONDUCTOR
SIZE
PANDUIT CORP.
PART NUMBER
TORQUE
1/4 x 20 BOLT
450A
350KCMIL
LCC350-14BW-X
62 in-lbs
400A
300KCMIL
LCCX250-14B-X
62 in-lbs
320A
4/0 AWG
LCCX4/0-14B-X
62 in-lbs
200A
3/0 AWG
LCCX3/0-14B-X
62 in-lbs
150A
1/0 AWG
LCCX1/0-14B-X
62 in-lbs
9.4
Output Connections.
Output connections for A and B loads are shown in Figure 4.
There are 10 sets of bus bar terminals for each side, A and B. The connections are
numbered to correspond with the numbers of the front panel breakers. The upper
strip connections are from the battery (FEED) through the breakers; the lower strip
connections are the RETURNS. Side B is on the left and side A on the right when
viewed from the rear.
All connections use 1/4-20 threaded studs and are rated up to 100 amperes. Maximum
wire size is 2 AWG. UNIPOWER recommends using FLEX wire with either Panduit
LCDXN2-14A-E or LCDXN2-14AF-E (90deg angle) lugs. When 125A, 150A or
200A breakers are installed two positions are utilized. Figure 6 below shows detailed
spacing of the terminals.
A - ALM
B - ALM
1
2
3
4
5
6
7
8
9
10
A BUS - 450A MAX/100A MAX PER CB
1
2
3
4
5
6
7
8
9
10
B BUS - 450A MAX/100A MAX PER CB
NO-C-NC NO-C-NC
ALM-B
ALM-A
NO-C-NC NO-C-NC
10
9
8
7
6
5
4
3
2
1
0.63
(16.0)
0.76
(19.3)
0.42
(10.7)
0.25
(6.4)
1/4-20 stud
length = 0.50 (12.7),
0.625 (15.88) spacing
1/4-20 stud
length = 0.38 (9.7),
0.625 (15.88) spacing
0.57
(14.5)
0.37
(9.4)
0.90
(22.9)
ø
0.306 (7.8)
0.49 (12.5) x
0.31 (7.9) slot
3.50
(88.9)
1.25
(31.8)
5.98
(151.9)
0.60
(15.2)
17.16
(435.9)
0.76
(19.3)
1.725
(43.82)
0.56
(14.2)
0.21
(5.3)
1.13
(28.7)
0.22
(5.6)
3.45
(87.6)
A - BUS OUTPUT FEED
B - BUS OUTPUT FEED
A - BUS RETURN
B - BUS RETURN
B - BUS FEED BREAKERS
A - BUS FEED BREAKERS
Alarm connector
Chassis GND
(1/4-20 THREAD)
A - BUS INPUT
FEED
B - BUS INPUT
FEED
10
9
8
7
6
5
4
3
2
1
Shorting Bus (-S Models)
OUTLINE OF SAFETY COVER
(blue dotted line)
4.60
(116.8)
0.625
(15.88)
0.500
(12.70)
0.750
(19.05)
4.642
(117.91)
Figure 6. Output Barrier Strip Detail
The following table lists a range of cable sizes with matching lugs that will fit the
output terminals. The indicated current rating is the maximum assuming that the
cables are bundled/confined.