Trace Engineering SW II - REV 4.01, Owner'S Manual

Page: 115 / 152

TECHNICAL INFORMATION
Copyright

Trace Engineering Company, Inc.
5916 - 195th Street N. E.
Arlington, WA 98223
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
SW Series Inverter/Charger
Part No. 2031-5
Rev. B: Sept 1, 1999
Page
107
BATTERY HOOK-UP CONFIGURATIONS
Battery banks of substantial size are generally created by connecting several smaller batteries together.
There are three ways to do this. Batteries can be connected in series, to increase voltage; in parallel to
increase amp-hour capacity; or in series – parallel, to achieve the required voltage and capacity.
The cables which connect the individual batteries together to make a larger battery “bank” should be
connected together will heavy cables. The actual size of the cable depends upon whether the batteries are
connected in parallel or series. Generally, the cables should not be smaller than the inverter cables - if the
main cables are 4/0 AWG, the battery interconnects should be 4/0 AWG.
Remember, for safety and to comply with UL regulations, battery over-current protection is
required in the ungrounded battery cable.
SERIES CONNECTION
When batteries are connected with the positive terminal of one to the negative terminal of the next, they
are connected in series. In a series configuration, the battery bank has the same amp/hour rating of a
single battery, but an overall voltage equal to the sum of the individual batteries. This is common with 24
volt or higher battery-inverter systems.
Each individual 6-volt battery capacity = 100 amp hours
Figure 31, Series Configuration: 6-Volt Battery Wiring
Each individual 12-volt battery capacity = 50 amp hours
Figure 32, Series Configuration: 12-Volt Battery Wiring
24V INVERTER
(Total Battery Capacity
= 50 Amp Hours)
12V 12V
FUSED
DISCONNECT
12V 12V
48V INVERTER
(Total Battery Capacity
= 50 Amp Hours)
12V 12V
FUSED
DISCONNECT
12V INVERTER
(Total Battery Capacity
= 100 Amp Hours)
6V 6V
FUSED
DISCONNECT
6V 6V
24V INVERTER
(Total Battery Capacity
= 100 Amp Hours)
6V 6V
FUSED
DISCONNECT
6V
48V INVERTER
(Total Battery Capacity
= 100 Amp Hours)
6V 6V 6V 6V 6V 6V 6V
FUSED
DISCONNECT