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Installation and Operation
3.
In common configurations, the battery on
one end will be the positive (+) output for that
string. This battery should be designated
Proceeding to the other end, adjacent batteries in
that string should be designated
4.
If more than one string is present, designate the first string as A, the second as B, and so on.
This should be done regardless of whether the strings are on the same shelf or higher shelves.
Number the batteries in subsequent strings just as was done in step 3.
5.
Install series connections. If an interconnecting bar was supplied with a front-terminal battery, it
should connect from the negative (left) side of battery 1 to the positive (right) side of battery 2 as
shown above. Top-terminal batteries require short interconnecting cables to be provided. Tighten
interconnect hardware "hand tight" only.
6.
Repeat the process as appropriate for batteries 2, 3, and any others in the string. Connect the
proper number of batteries in series for the nominal voltage of the load.
7.
If multiple series strings will be used, repeat this process for strings B, C, and so on.
8.
Install parallel connections. Parallel connections are made from the positive terminal of one
battery or string to the positive of the next; negative connections are made similarly. (See Figure 7
on page 9.) External cables or bus bars must be provided. The interconnecting bar included with
front-terminal batteries cannot make parallel connections.
9.
Use a digital voltmeter (DVM) to confirm the nominal system voltage and polarity. Confirm that no
batteries or strings are installed in reverse polarity.
10. Install cables or bus bars for DC loads. Size all conductors as appropriate for the total loads. See the
manual for the battery rack or cabinet if necessary.
11. Before making the final battery connection, ensure the main DC disconnect is turned off. If this is
not possible, then do not make the final connection within the battery enclosure. Instead, make it
at the load or elsewhere in the cable system so that any resulting spark does not occur in the
battery enclosure.
12. Once hardware is installed and batteries are properly aligned, torque all connections to the
appropriate value for the battery model. (See the requirements on page 19.) Lightly coat the
surfaces with battery terminal grease. Reinstall the terminal covers if present.
IMPORTANT:
Before using the battery bank, commission the batteries as described on the next page.
12
To make the DC connections:
1.
If installing batteries in a rack or cabinet, always begin with the
lowest shelf for stability. Place all batteries with terminals facing
to the most accessible side of the rack. If terminal protectors are
present, remove and save them.
2.
Clean all terminals and contact surfaces.
.
,
, and so on.
Figure 11
Connecting Batteries
1
2
900-0127-01-00 Rev C
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