Vertiv
| Liebert
®
EXM
™
EBC
™
480V User Manual |
13
Because individual battery characteristics are not identical and may change over time, the UPS
module is equipped with circuitry to equalize battery cell voltages. This circuit increases charging
voltage to maintain flooded type battery cells at full capacity.
The following general battery safety precautions and warnings must be observed at all times:
• A battery can present risk of electric shock or burn from high short circuit currents.
• When connected in a string, the voltage will exceed 432VDC. This voltage is potentially lethal. Always
observe high-voltage precautions.
• Eye protection must be worn to prevent injury from accidental electrical arcs.
• Remove rings, watches, necklaces, bracelets and all other metal objects.
• Use only tools with insulated handles.
• Wear appropriate personal protective equipment when handling batteries.
• If a battery leaks electrolyte or is otherwise physically damaged, it should be placed in a container resistant
to wire and disposed of in accordance with local regulations.
• If electrolyte comes into contact with the skin, the affected area should be washed immediately with plenty
of clean water.
• Batteries must always be disposed of according to local environmental laws.
• When replacing batteries, use the same number and type that were originally fitted.
• Disconnect charging source prior to connecting or disconnecting battery terminals.
• Determine if the battery is grounded. If it is grounded, remove source of ground. Contact with any part of a
grounded battery can result in electrical shock.
• Battery support tray must be used whenever a battery tray is being pulled out.
2.1.1
Connecting the Batteries
If the Liebert EXM battery cabinet is installed on a raised floor, the battery power cables and
circuit breaker control cables may be routed to the UPS cabinet through the bottom of the
cabinet.
If the Liebert EXM battery cabinets are installed adjacent to one another on a solid floor, these
cables may be passed between the cabinets through the sides of the cabinets.
Intertray connections must be made before the battery cabinet may be used.
2.2
Power Connection
Depending on the site layout, the battery cabinets can be cabled as shown in
WARNING
Risk of electric shock, explosive reaction, hazardous chemicals and fire. Can cause
equipment damage, personal injury and death.
Do not use equalize charging with valve-regulated, lead-acid batteries, such as those in
Liebert Battery Cabinets. Refer to the battery manufacturer’s manual, available on the
manufacturer’s Web site, for specific information about equalize charging.
AVERTISSEMENT
Risque de décharge électrique, de réaction explosive, d’incendie et d’exposition à des
produits chimiques dangereux pouvant entraîner des dommages matériels, des blessures
et même la mort.
N'utilisez pas de charge d’égalisation avec des batteries d'accumulateurs au plomb à
régulation par soupape, comme celles utilisées dans les armoires de batterie Liebert.
Reportez-vous au manuel du fabricant des batteries, disponible sur le site Web du
fabricant, pour obtenir des renseignements précis sur la charge d’égalisation.
