EnerSys OutBack POWER NorthStar NSB BLUE+ Series, Руководство пользователя

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Installation and Operation
12
900-00264-01-001 Rev A
Applying Grease to Terminals
Electrical grade conductive grease is applied directly to the battery terminals as a corrosion
preventative measure during manufacturing. In typical indoor installations no additional grease
is required to protect the terminals and other electrical connections after installation. The bus
bars and other hardware provided with the batteries are plated to protect from corrosion.
Voltage Check
Before connecting the batteries in series, the voltage variation must be checked and the
voltages recorded. If the voltage varies more than 0.15 Vdc between the highest and the lowest
battery voltage, the batteries should be charged individually before being connected in series.
Alternatively the batteries may be matched in each string so that all the batteries have a voltage
spread of less than 0.15 Vdc.
To make the DC connections:
Make certain to clean all terminals and contact
surfaces as described above.
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.
In common configurations, the battery on one end
will be the positive (+) output for that string. This
battery should be designated [
1 ]. Proceeding to
the other end, adjacent batteries in that string
should be designated [
2 ], [ 3 ], and so on.
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 in step 2.
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.
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.
If multiple series strings will be used, repeat this process for strings B, C, and so on.
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 4 on
page 7.) External cables or bus bars must be provided. Interconnecting bars cannot make parallel
connections.
Use a digital voltmeter (DVM) to confirm the nominal system voltage and polarity. Confirm that no
batteries or strings are installed in reverse polarity.
Install series connections. If an interconnecting bar was supplied, it should connect from the
negative (left) side of battery [ 1 ] to the positive (right) side of battery [ 2 ] as shown above (see
arrow). Top-terminal batteries require short interconnecting cables to be provided. Tighten
interconnect hardware “hand tight” only.
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 the
Figure 10 DC Connections
Interconnecting Flexible Link