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Operation
14 900-0020-01-00 Rev A
will then enter Silent (see page 22) and continue repeating this part of the charging cycle until it
disconnects from the utility grid.
If the reconnection was triggered by the Rebulk voltage setting, the inverter will require the charger to
pass through the entire charge cycle, including the
Absorb Voltage
,
Absorb Time
,
Float Voltage
, and
Float Time
settings (as well as Offset). The inverter will continue repeating the Float part of the
charging cycle until it disconnects from the utility grid.
See page 20 for more information on the battery charging cycle.
BENEFITS
:
Mini Grid
mode allows a system to take full advantage of renewable energy. Dependence on the utility grid
can be minimized or eliminated.
In this mode, the inverter will offset the loads with excess renewable energy if it is available from the
batteries. (See the previous page and page 19 for more information on the Offset function.)
This mode is similar to to the high-battery transfer (HBX) mode used by the MATE3 system display, but it has
several differences (see below).
NOTES
:
The Support and grid-interactive functions of the Radian inverter are unavailable in this mode.
This mode has similar priorities to the high-battery transfer (HBX) mode used by the MATE3 system display.
However, it is not compatible with HBX mode and cannot be used at the same time. When using
Mini Grid
mode, HBX mode should be disabled to prevent conflicts.
When deciding whether to use
Mini Grid
mode or HBX, the user should consider various advantages of each.
Mini Grid logic is based in the Radian inverter and can function in the absence of the MATE3. HBX logic
is based in the MATE3 and cannot function unless the MATE3 is installed and operating.
Mini Grid can use utility grid power to fully recharge the batteries on reconnection. HBX can only do so
under specific circumstances.
HBX set points have a wide range of settings. Mini Grid uses settings which tend to prevent the
batteries from excessive discharge; however, most of its settings are automatic and do not allow
customization.
HBX works more efficiently when the renewable source is larger, but there is no specific requirement for
renewable size. Mini Grid is unable to work properly unless the renewable source is larger than the size
of the loads. (See previous page.) If this condition is not met, Mini Grid will not disconnect the inverter
from the utility grid.
HBX can be combined with the settings of any other Radian input mode (Generator, UPS, etc.). The
Mini Grid input mode is naturally limited to its own settings and does not have access to certain
functions of other modes. (See the first bullet above.)
See page 32 and the MATE3 Owner’s Manual for more information on HBX.