OMD10078 rev F
38
4.11 POSITIONING AND CONNECTION OF BATTERIES
CAUTION
A battery can present a risk for electrical shock and high short circuit current. The
following precautions should be observed when working on batteries:
a)
Remove watches, rings or other metal objects;
b)
Use tools with insulated handles;
c)
Wear rubber gloves and boots;
d)
Do not lay tools or metal parts on top of batteries;
e) Disconnect the charging source prior connecting or disconnecting battery
terminals;
f)
Determine if battery is inadvertently grounded. If inadvertently grounded,
remove source from ground. Contact with any part of a grounded battery can
result in electrical shock. The likelihood of such shock can be reduced if such
grounds are removed during installation and maintenance (applicable to
equipment and remote battery supplies not having a grounded supply circuit).
IMPORTANT
For the installation of batteries, the EN62040-1-2 standard must be strictly adhered
to, as well as all the national rules or specifications which can be applied to the
premises or building.
To obtain the battery life indicated by the battery manufacturer, the operating
temperature must remain between 0 and 25 °C. However, although the battery can
operate up to 40 °C, there will be a significant reduction of the battery life.
To avoid the formation of any kind of potentially explosive hydrogen and oxygen
mixture, suitable ventilation must be provided where the battery is installed (see
EN62040-1-2).
For the materials installed in France, we have to apply the rules according to NFC
15-100 article 554.2: the volume of the renewed air has to be at least 0,05 NI m
3
per
hour, where N is the number of the elements inside the battery and I is maximum
current of the rectifier.
The batteries are installed inside external cabinets and it is recommended to install
them when the UPS is capable of charging them. Please remember that, if the battery is
not charged for periods over 2-3 months it can be subject to irreparable damage.
4.10.1 External battery
The external batteries, (consisting of 50-52 battery blocks, with 6 cells each for 300-
312 cells in total), are installed in the external cabinet:
- AS764 for 65÷140Ah batteries
The battery circuit breaker is installed on the external cabinet, so it is not provided in
the UPS. With regard to the installation of the external battery cabinet, refer to the
details given in paragraph 5.10.
The connection cables with the UPS are included inside the battery cabinet (standard
length 5m). The standard colour for the external battery cabinet is RAL 5026; the
protection level is IP20.
