Outback FX-R Series Operator Manual

Operation
16 900-0167-01-01 Rev A
Grid Tied
IMPORTANT:
Selling power to the utility company requires the authorization of the local electric jurisdiction.
How the utility company accommodates this will depend on their policies on the issue. Some
may pay for power sold; others may issue credit. Some policies may prohibit the use of this
mode altogether. Please check with the utility company and obtain their permission before
using this mode.
The
Grid Tied
mode allows the FXR inverter to become grid-interactive. This means that in
addition to using power from the utility grid for charging and loads, the inverter can also convert
excess battery power and sell it to the utility grid. Excess battery power usually comes from
renewable energy sources, such as PV arrays, hydroelectric turbines, and wind turbines.

The grid-interactive function uses
Offset
operation. See page 37 for more information.

The grid-interactive function utilizes the
Grid Support
settings. See page 39 for more information.
BENEFITS
:

Excess power is returned to the utility grid.
 The inverter will offset the loads with excess renewable energy if it is available from the batteries.
 If the excess is greater than the AC demand (the load size), the excess will be sold to the grid.
NOTES
:

The inverter has a delay before selling will begin. This function, the
Re-Connect Delay Timer
, has a
default settin
g of five minutes. During this time, the inverter will not connect to the utility grid.
The
timer is adj
ustable in the
Grid Interface Protection
menu (see belo
w).

Upon initial connection to the utility grid, the inverter may be required to perform a battery charging
cycle. Thi
s may delay the operation of the grid-interactive function.

The grid-interactive function only operates when excess DC (renewable) power is available.

The grid-interactive function is not available in any of the other input modes.

Whenever energy produced from the renewable energy source exceeds the loads on the inverter
output, the system di
splay will indicate selling. Any power not consumed by loads on the main
panel
will be sold to the grid.

The amount of power an inverter can sell is not necessarily equal to its specified output wattage.
The
Maximum Sell C
urrent
can be decreased if it is necessary to limit the power sold. This
item is
available in th
e
Grid Interface Protection
menu (see next page). This setting is not affected
by the
AC Li
mit
settings (see pag
e 25).
 The amount of power that is sold is controlled by the utility grid voltage. The wattage sold equals
this voltage
multiplied by the current. For example, if the inverter sells 15 amps and the voltage is
116 Vac, the inverter will sell 1.74 kVA. If the voltage is 125 Vac, the inverter will sell 1.88 kVA.
Additionally, output will vary with inverter temperature, battery type, and other conditions.
 This recommendation is specifically for the inverter’s grid-interactive function. In some cases, the
source may be sized larger to account for environmental conditions or the presence of DC loads.
This depends on individual site requirements.

This mode is not available in 12-volt FXR models. It does not appear on the system display’s list of
available inp
ut modes.