Alpha C016-1540-10, Technical Manual

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C048-720-30 Rev. B (03/2021)
4.3 4.3 Termination Bus Plates Termination Bus Plates
NOTE: Before installing the termination bus plates, ensure
that any bolts located above the top center and top right
batteries are shielded using the screw finishing caps. See
Figure 6 on page 8 and note the five finishing caps over the screws
at the top of the stack�
Step 1.
Locate the two termination bus plates. The plates are pre-
assembled with input bus isolators (see Figure 9) � Check to
ensure the isolators are secure around the plates. Tightly
secure the termination bus plates onto the -48V and +48V
input bus bars using (2) 3/8 16 x 1" socket cap screws with
split and flat washers.
Step 2.
Insert (6) 1/4-20 x 1 3/4" hex screws with flat washer
through the top of the battery termination plate and through
the cell terminals. Next, secure the tie straps as shown
using a flat washer, split washer, and 1/4-20 hex nut ( see
Figure 10) �
Step 3.
After adjustment, tighten all bolts securely. All split lock
washers should be engaged and compressed. Use a
torque wrench to tighten the terminal plate to the negative
terminal posts. Consult the battery manufacturer torque
specification but typically 100 in · lbs is used.
Step 4.
Replace the plastic termination bus covers using the
hardware that they came assembled to the DCX LP unit
with.
Step 5.
Fix the plastic termination plate shields over the termination
plates using the 6-32 x 3/8 pan head screws. The shields
are to be attached to the isolation bars surrounding the
termination plates.
Step 6.
Ensure that the DCX LP unit is securely mounted on the
top of the battery stack.
Step 7.
Once mechanical mounting is complete, the remaining
steps include electrical connections�
4.4 4.4 Chassis Ground Chassis Ground
Table 2. Ground Termination Summary
TERMINATION
TYPE
HOLE/
STUD SIZE
CENTER TO
CENTER
RECOMMENDED
TORQUE VALUE
Threaded Stud 1/4 in. 1 in� 5.83 ft·lbs
Step 1.
Attach grounding cable to chassis via the internal protective
ground studs inside the DCX LP unit (see Figure 11) �
Figure 9. Termination bus plate with isolators
Figure 10. Fastened tie straps
Figure 11. Grounding cable connection