Maxwell 16 V Series User Manual page 5

As in any electrical system, proper cable dress is required for trouble-free operation. The cables
used for attachment are large, and improperly constrained cables can place bending stress on the
terminals and terminal bolts. Cables should be installed so that they do not exert bending or
twisting torque on the power terminals, and should be routed away from the module so that they
are parallel to the top surface of the terminal and constrained within 50 cm of the terminal before
bending the cable in any direction. High vibration environments may require additional restraints.
Attachment to the output terminals should be made with ring lugs or bus bars of an appropriate
size for the application current. If bus bars are used, brackets should be installed to interconnect
the tops of adjacent modules to prevent undesirable lateral forces on the terminals.
The energy storage modules have low ESR. As a result, the resistance of the wires connecting the
energy storage module to the application can easily exceed the ESR of the module. Connection of
modules in series or parallel should utilize the same gauge wire (or equivalent bus bar) as
determined for final output connections. When connecting in series connect the positive output
terminal of one module to the negative output terminal of the next module. Two possible
orientations are illustrated in Figure 1.
Figure 1 – Possible series connection arrangements
Full UL810a compliance is satisfied for up to three (3) BMOD0165 P048 (certain BMOD0165 P048
B09 models may not be UL810a compliant) modules in series or nine (9) BMOD0500 P016 modules
in series (maximum operating voltage of 150V).
When several modules are connected in series for operating at higher voltage, care must be taken
to ensure proper creepage and clearance distances in compliance with national safety standards
for electrical equipment.
User Manual – 16 V and 48 V Modules – Doc. No. 1008491.13
© 2014 Maxwell Technologies, Inc. Page 4
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