OutBack Power Technologies EnergyCell 200PLR, Руководство пользователя

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Installation and Operation
900-0230-01-00 Rev A
9
Battery Configurations
Figure 4 Series String Configurations
Figure 5 Parallel String Configuration
Series String (24 Vdc) Series String (48 Vdc)
Load + Load – Load + Load –
Batteries are placed in series (negative to positive) for additive voltages. Batteries in series
are known as a “string”. A string of two EnergyCell batteries has a nominal voltage of 24
Vdc and can be used for 24-volt loads. A string of four has a nominal voltage of 48 Vdc.
Other voltages are possible. However, batteries in series do not have additive amp-hours.
A single string of any voltage (as shown above) has the same amp-hours as a single battery.
When replacing batteries, a new battery should not be placed in series with old batteries.
This will cause severe stress and shorten the life of all batteries. All batteries in a string
should be replaced at the same time.
Batteries are placed in parallel (positive to
positive, negative to negative) for additive amp-
hour capacity. Three batteries in parallel have
three times the amp-hours of a single battery.
However, batteries in parallel do not have
additive voltages. A single set of batteries in
parallel (as shown in this figure) have the
same voltage as a single battery.
NOTE
:
Use caution when designing or building
systems with more than three EnergyCell
batteries or strings in parallel. The extra
conductors and connections used in larger
paralleled systems can lead to unexpected
resistances and imbalances between batteries.
Without proper precautions, these factors will
reduce the system efficiency and shorten the life
of all batteries. For systems beyond three
strings, contact an OutBack representative.
Parallel Batteries
Load Bus + Load Bus –