16
Issue 13 (11/14/2017)
4.5
Battery
Placement
and
Wiring
Proper installation and wiring of the batteries is critical to the long-term backup capability of any power supply
system. Gelled electrolyte, valve regulated batteries are recommended for use in broadband power supply
applications. All batteries should be tested and fully charged prior to installation. Interconnecting wiring must be
no smaller than 8 mm² in area or 8 AWG. Longer run times and improved efficiency may be realized using
battery wiring of 13 mm² in area or 6 AWG.
In light of the specialized handling and connection requirements for batteries, only trained personnel should install
batteries in an enclosure. Personnel must always employ appropriate safety equipment (goggles or face shields,
insulated gloves, etc.) and only use fully insulated tools for tightening hardware on the battery terminals.
Additionally, proper lifting tools and techniques must always be used during battery installation to avoid personal
injury or equipment damage.
4.6 Battery Installation Procedure
1.
Place the batteries on the lower shelf of the enclosure, positive terminal facing out.
2.
Route the terminal connector ends of the battery cable from the power supply compartment at the top
of the enclosure to the battery compartment.
3.
Wire the batteries in series, connecting negative post of one battery to positive post of the next.
Battery cables and terminals are color coded to aid in correct wiring. Black terminal is negative (-); red
terminal is positive (+). Use of an anti-oxidation compound, such as NO-OX-
ID “A-Special”
4
, is
recommended at each battery termination including ring lugs and threaded hardware.
Use fully
insulated tools only when tightening battery connections.
4.
After completing all connections to the battery terminals, use a digital multimeter (DMM) to verify proper
voltage and polarity at the battery cable connector that terminates to the power supply DC input port.
For 3-battery systems, indicated voltage should be approximately 36 volts or slightly higher. In a 4-
battery system, indicated voltage should be approximately 48 volts or slightly higher. When the red
and black meter probes are connected to the corresponding colored terminals of the battery harness
connector, the meter should indicate positive (+) voltage, assuming proper connections at the meter
itself.
WARNING
If voltage and polarity indications do not correspond to those described
above, determine the cause before mating the battery connector to the
power supply. Incorrectly wired batteries can cause personal injury or
permanent damage to equipment.
5.
Space the batteries approximately 25-mm (1 inch) apart to provide adequate airflow.
6.
Attach the body of the temperature sensor probe to the side of the center battery using self-adhesive
tape rated for use in wide temperature ranges. Depending upon battery construction, it may be
necessary to hang the sensor in close proximity to the side of the battery instead of attaching it directly.
4
NO-OX-ID-
“A-Special” is a registered trademark of Sanchem, Inc, Chicago, IL
Summary of Contents for EB1s
Page 2: ......
Page 35: ...33 Issue 13 11 14 2017 Fig 8 1 Battery Balancer wiring 36V 3 batteries 1 string ...
Page 36: ...34 Issue 13 11 14 2017 Fig 8 2 Battery Balancer wiring 48V 4 batteries 1 string ...
Page 37: ...35 Issue 13 11 14 2017 Fig 8 3 Battery Balancer wiring 36V 6 batteries 2 strings ...
Page 38: ...36 Issue 13 11 14 2017 Fig 8 4 Battery Balancer wiring 48V 8 batteries 2 strings ...
