Commissioning/Installation - NorthStar NSB12-310 Applications Manual

Since the batteries are supplied charged, storage time is
limited. During storage, lead-acid batteries will gradually
self-discharge. The rate of self-discharge increases
with increasing temperature. As a result, maintenance
charging needs to be performed more frequently at
higher temperatures. In order to easily charge the
batteries after prolonged storage, it is advised not to
store it more than:
• 24 months at ambient temperature no warmer than
77°F (25°C)
• 20 months at 86°F (30°C)
• 11 months at 104°F (40°C)
Give the battery a freshening charge before the end
of the recommended storage interval. For details, see
section 5.7.
FAILURE TO CHARGE AS NOTED VOIDS THE BATTERY'S
WARRANTY
9.2 Shelf Life
NorthStar batteries have a two year shelf life at
+25° C (+77°F).
10

Commissioning/Installation

10.1 Unpacking the Batteries
When received the batteries should be inspected. Make
sure the batteries were not damaged during transport,
and that all the proper accessories were included in
the delivery. If problems arise, please initiate a claim
immediately.
10.2 Checking the Voltage Spread
Before connecting the monoblocs in series, the voltage
variation must be checked. If the voltage varies more than
0.15 V between the highest and the lowest monobloc
voltage, the monoblocs should be charged individually
before being connected in series. Refer to the recharge
table(s) in this manual for the particular monobloc type
used.
10.3 Installation
Install in clean, dry area. NorthStar batteries release
negligible amounts of gas during normal operation,
because they have a high gas recombination efficiency.
They can be installed near the mains equipment. Batteries
must be installed in accordance with federal, state and
local law regulations and manufacturers instructions.
Form: SES-541-01711
10.4 Temperature
Avoid placing the battery in areas of high temperature
or in direct sunlight. The battery will give the best
performance and service life when working at a
temperature between 68°F (20°C) and 77°F (25°C). The
usual operating temperature is between -4°F (-20°C)
and 113°F (+45°C). Operating limits have been tested
between -40°F (-40°C) and +158°F (+70°C).
10.5 Ventilation
Under normal conditions gas release is very low and
natural ventilation is sufficient for cooling purposes and
inadvertent overcharge, enabling NorthStar batteries to
be used safely in open spaces in offices and with mains
equipment. However, care must be taken to ensure
adequate ventilation when the batteries are placed in
cabinets. If cabinets are used they must be ventilated.
10.6 Security
All installation and ventilation must comply with the
current federal, state and local regulations.
10.7 Putting the Batteries in Place
NorthStar battery racks or cabinets are recommended
for proper installation. Assemble the rack according to
instructions. Place the battery blocs or cells on the rack
and arrange the positive and the negative terminals
for connection. Make sure the batteries are all evenly
spaced approximately 10mm (3/8 inch) apart, aligned
and resting on a flat surface. It is strongly recommended
that the surface the batteries rest on is acid resistant,
and electrically insulated. It is important that the battery
is mounted firmly.
10.8 Battery Terminal Preparation
To minimize contact resistance, it is important that the
terminals of the battery be cleaned of any oxidation.
Lightly brush the terminal contact surface areas with a
brass bristle brush, or the equivalent, and then apply a
light coat of antioxidant grease such as a conductive NO-
OX-ID to the surfaces to protect the terminal from future
oxidation or corrosion. Wipe clean prior to installing
hardware.
Issued: 12-08-16 ECO-101191