Xantrex Technology 120 VAC/60 Battery Hook-Up Configurations, Series Connection, Page 107

TECHNICAL INFORMATION

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.

6V

6V

6V

6V

6V

6V

FUSED

DISCONNECT

FUSED

DISCONNECT

12V INVERTER	24V INVERTER
(Total Battery Capacity	(Total Battery Capacity
= 100 Amp Hours)	= 100 Amp Hours)

6V

6V

6V

6V

6V

6V

6V

6V

FUSED

DISCONNECT

48V INVERTER

(Total Battery Capacity

= 100 Amp Hours)

Each individual 6-volt battery capacity = 100 amp hours

Figure 31, Series Configuration: 6-Volt Battery Wiring
12V	12V	12V	12V	12V
	FUSED
	DISCONNECT
24V INVERTER			48V INVERTER
(Total Battery Capacity			(Total Battery Capacity
= 50 Amp Hours)			= 50 Amp Hours)

Each individual 12-volt battery capacity = 50 amp hours Figure 32, Series Configuration: 12-Volt Battery Wiring

12V

FUSED

DISCONNECT

 2001 Xantrex Technology, Inc.	Telephone: 360/435-8826	SW Series Inverter/Charger
5916 - 195th Street N. E.	Fax: 360/435-2229	Part No. 2031-5
Arlington, WA 98223	www.traceengineering.com	Rev. C: February 2001

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