Battery Wiring - Liebert 610 Series Installation Manual

7.3

Battery Wiring

The UPS may be supplied with battery cabinets or a rack-mounted battery system.
Power wiring to the battery cabinet connects positive, negative and ground power cables from the bat-
tery cabinet to the associated UPS. Connection of the UPS to the battery cabinet serves to both charge
and discharge the batteries (when needed). The battery disconnect (circuit breaker) requires a control
cable. Except for interconnect wiring between multiple battery cabinets, power and control cables are
field supplied. Refer to Figures 20 through 23 and 50 through 54.
WARNING
!
A battery intercell connection on each tier of the Liebert battery cabinet is disconnected for
safety during shipment. Do not complete these connections. A Liebert Global Services
representative will complete these connections as part of start-up. An improperly installed
unit can result in injury to personnel or damage to equipment.
CAUTION
!
Be sure polarity is correct when wiring the battery cabinet to the connected equipment
(positive to positive; negative to negative). If polarity is not correct, fuse failures or equipment
damage can result.
CAUTION
!
Cables between batteries and the UPS should be run in matched pairs,
positive-with-negative, within each conduit or cable run. Grouping
like-polarity cables together (i.e., positive-with-positive and
negative-with-negative) can cause stress or damage to the cables,
conduit or buswork.
Call Liebert Global Services to schedule installation check-out, final battery intercell connections and
start-up.
NOTE
A Liebert Battery Specialist can perform a detailed inspection of the entire battery system to
ensure it meets current IEEE standards. This inspection service is recommended because
batteries are a critical part of the UPS system.
25
Wiring Considerations