Installation
990-1165
Installation Guide APC BC300 Series 15kW 208/450/480V UPS 25
3.4 Installation of External Batteries and Battery Breaker
Some units are connected to optional external batteries in a separate cabinet or rack.
External batteries must be installed and connected to the UPS by an authorized service person
familiar with UPS battery installations and applicable building and electrical codes.
3.4.1 Battery Installation
WARNING
Full voltage and current are always present at the battery terminals. The batteries used in this
system can produce dangerous voltages, extremely high currents, and may cause a risk of
electric shock. They may cause severe injury if the terminals are shorted together or to ground
(earth). You must be extremely careful to avoid electric shock and burns caused by contacting
battery terminals or shorting terminals during battery installation. Do not touch uninsulated
battery terminals.
Only authorized service personnel familiar with battery systems and required precautions may
install and service the batteries. The installation must conform to national and local codes. Keep
unauthorized personnel away from batteries.
CAUTION!
The qualified service person must take these precautions:
1. Wear protective clothing, such as rubber gloves and boots and protective eye wear. Batteries
contain caustic acids and toxic materials and can rupture or leak if mistreated. Remove rings,
metal wristwatches, other metal objects and jewellery. Do not carry metal objects in your
pockets where the objects can fall into the battery cabinet.
2. Tools must have insulated handles and must be insulated so that they will not short battery
terminals. Do not allow a tool to short between individual or separate battery terminals or to
the cabinet or rack. Do not lay tools or metal parts on top of the batteries, and do not lay them
where they could fall onto the batteries or into the cabinet.
3. Install the batteries as shown on the drawing provided with the batteries. When connecting
cables, never allow a cable to short across a battery’s terminals, the string of batteries, or to
the cabinet or rack.
4. Align the cables on the battery terminals so that the cable lug will not contact any part of the
cabinet or rack, even if the battery is moved. Keep the cable away from any sharp metal
edges.
5. Install the battery cables so they cannot be pinched be the UPS or battery cabinet doors.
6. Do not connect the battery terminal to ground (earth). If any battery terminal is inadvertently
grounded, remove the source of the ground. Contacting any part of a grounded battery can
cause a risk of electric shock.
7. To reduce the risk of fire or electric shock, install the batteries in a temperature and humidity
controlled indoor area, free of conductive contaminants.
8. Battery system chassis ground (earth) must be connected to the UPS chassis ground (earth).
If you use conduit, this ground conductor must be routed in the same conduit as the battery
conductors.
9. Where conductors may be exposed to physical damage, protect the conductors in accordance
with all applicable codes.
10. If you are replacing batteries or repairing battery connections, shut off the UPS and remove
both AC and DC power.
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