3
A rigid plastic insulating cover is provided which protects the unit
terminals. These are factory fitted and there is no need to remove
them until access to the terminals is required.
Storage
Store the batteries in a dry, clean and preferably cool location.
As the batteries are supplied charged it is advised not to store
batteries without a refreshing charge for more than:
6 months at 20°C
3 months at 30°C
6 weeks at 40°C
3 weeks at 50°C
The refreshing charge needs to be at 2.27-2.30Vpc at 20°C for 48 to
96 hours. A current limit is not essential, but for optimum charge
efficiency the current output of the charger can be limited to 10%
of the 3 hour capacity rating. The need for a refreshing charge
can also be determined by measuring the open circuit voltage of
the stored battery. Refreshing charge is advised if the voltage
drops below 2.10Vpc. Failure to observe these conditions may
result in greatly reduced capacity and service life.
Temperature
Avoid placing the battery in a hot environment or in front of a
window. The battery will give the best performance and service
life when working at a temperature between 20°C and 25°C.
Operating temperatures should not 45°C or fall below -
30°C.
Ventilation
Under normal conditions gas release is very low and natural
ventilation is sufficient for cooling purposes and inadvertent
overcharge, enabling PowerSafe VX batteries to be used safely in
offices and with main equipment.
However care must be taken to ensure adequate ventilation when
placed in cabinets. Batteries must not be placed in sealed
cabinets.
Installation
Install batteries in a clean and dry area. PowerSafe VX products
release minimal amounts of gas during normal operation (gas
recombination efficiency
≥
95%). Batteries must be installed in
accordance with national standards
(for instance EN 50272-2), otherwise in accordance with the
manufacturer’s instructions.
Please note that each monobloc is supplied complete with a
fastener set, i.e. nut, spring washer and plain washer. These are
fitted to the threaded stud of each terminal pillar prior to despatch
from the factory.
Enersys battery racks or cabinets are recommended when
installing the monoblocs. Assemble the rack according to
instructions. Place the battery blocs on the rack at their correct
cell centres (as indicated on the connection drawing) and arrange
the positive and the negative terminals for connection according
to the wiring diagram.
Connection of monoblocs
When all monoblocs have been placed on the stands/in the
cabinets, connect them together by means of the connecting straps
and fastener set, in sequence, pillar, connecting strap, plain washer,
spring washer and nut.
Tighten the fastener set nut(s) to a level of fastening torque of 5 ±0.5
Nm. Never use a standard spanner, use insulated tools only.
A loose connector can cause problems in charger adjustment,
erratic battery performance, possible damage to the battery
and/or personal injury.
Single solid sleeved copper strap connector type SUB5176 is used to
connect units located on the same tier of the stand (or on the same
shelf of a cabinet). A single flexible insulated cable connector is
used for inter-tier (or inter-shelf) connection which is provided when
the stand is supplied by Enersys.
Putting the terminal cover back
Insulating terminal covers have been designed to be fitted on
completion of the connecting up sequence of the battery. Where
inter-tier flexible insulated cable connectors are used, it will be
necessary to remove the corner of the cover by simply snapping it
off.
Publication No: EN-VX-IOM-001 February 03
www.enersysinc.com
