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Contact
us for a FREE quotation by phone, fax or e-mail |
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| Quick Product
List |
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| Battery Backup solar power
systems are more flexible than their net metering counterparts.
They are also slightly more complex. The diagram below
indicates a complete battery backup solar power system,
including the available options. Your specific application
may not require all the equipment. |
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| A battery backup system will supply power
where utility power is not available. Although more complex
than a net-metering system, a battery backup system is
much more flexible in the range of suitable applications.
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Complete
battery backup system configuration with
options |
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1 - Solar array |
| 2 - Fused array combiner
and/or ground fault protection. |
| 3 - Solar regulator |
| 4 - System storage battery |
| 5 - DC load equipment |
| 6 - DC/AC inverter |
| 7 - AC load equipment load
panel |
| 8 - AC load equipment operating
from solar system |
| 9 - AC load equipment operating
from utility |
| 10 - AC utility panel |
| 11 - Utility meter |
| 12 - Utility power |
| 13 - Backup generator |
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Above
is only intended to show basic configuration
of a typical system. Additional safety
and code required equipment may be
required. |
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| A battery backup system has two basic variations
- grid-tie and
stand alone. |
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| The grid-tie
option can be used in areas where power outages, brown-outs
or utility power quality may be of concern.
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| Part or all of the household load, depending
on the load size, may be powered via an inverter connected
to the existing household circuit breaker box. Typically,
heavy energy consumption loads such as air-conditioners,
electric heating, electric stoves, heat pumps and electric
hot water heaters are left running directly on the utility
power. They are seen as non-critical during a utility
outage. Due to their high instantaneous power and daily
energy consumption, they will place a huge burden on the
system inverter and energy storage battery bank during
a utility failure. In the event of a utility failure,
power will be lost to the ’big’, non-critical
loads. At the same time, the inverter will take over power
supply to the ’dedicated’ loads, supplying
them with power until the utility power is restored. A
backup generator can also be installed to ensure uninterrupted
power supply when the battery bank has been discharged
due to an extended power outage. Depending on the residential
load size, battery bank capacities can be designed for
autonomous backup power for as many days as needed. |
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| A stand alone
system can consist of the same standard equipment as a
grid-tie system, with the exception of the utility inter-connection.
These systems are typically used for remote power supply
some distance from the utility grid or in any location
where utility power is not available or too expensive
to have installed. The load equipment may be standard
household type AC appliances, DC equivalents, or a mix
of both. |
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 Energy
conservation is the easiest way to maximize the
return on your solar power system investment and
subsequent utility cost saving. |
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| What equipment is needed
for your battery backup system? The
item numbers given refer to the basic system
layout shown above. |
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Remote home with
all DC appliances and lights. |
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Items: 1, 2, 3, 4, 5 |
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Remote home with DC and AC
appliances and lights. |
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Items: 1, 2, 3, 4, 5, 6,
7, 8 |
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Options: 13. Add generator
as backup to solar. |
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Home with utility power that
needs only power backup to ’dedicated’
load upon utility failure. |
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Items: 4, 6, 7, 10, 11, 12 |
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Options: 13. Add generator
as backup to battery bank. |
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Home with utility power that
wants to run ’dedicated’ load
from a solar power system, use utility power
as a backup power source, and use a generator
as a failsafe backup to ensure power availability. |
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Items: 1, 2, 3, 4, 6, 7,
8, 9, 10, 11, 12, 13 |
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The same equipment can also
be used for net-metering and a standard power
backup system. |
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| Electrical
protection, interfacing, mounting, and other
installation related equipment may be required.
Please contact Southwest PV Systems, Inc.,
for advice and engineering services. |
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Basic net metering
systems will be added shortly and will be available
for purchase in our online store. Please check
back with us soon. |
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Contact SWPV any time
for more information, quotations or consultation |
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Copyright
© 2003, Southwest Photovoltaic Systems, Inc. |
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