In addition to converting solar power into utility grade electricity for local loads and export, a multi-purpose inverter provides back
up power capabilities when utility failures occur. These inverters use batteries for energy storage. Backup capacity is limited by
the size of the battery bank installed with the system. We recommend a minimum 200 Ah @ 48 Vdc battery bank for any multipurpose
grid-tie system. Each 100 Ah @ 48 Vdc stores approximately 3.5 kW/hr of usable energy.
In most cases, the back-up power capability of the inverter(s) will not be sufficient to power the entire home. Generally, the most
important loads such as communications, refrigeration, lighting, etc., will be re-wired to a sub panel powered by either the utility
or the inverter. Multi-purpose grid-tie systems are complex because batteries, MPPT controller(s), high current switch gear, and
changes to a home's AC electrical distribution panel(s) are required. In addition to the inverters listed here, SunWize assembles complete Power Centers for grid-tie backup.

GTFX and GVFX Inverters
The FX inverter from OutBack Power has established
itself as a real star in the off-grid world.
Now they bring their expertise to the multi-purpose
grid-tie marketplace with the GTFX and the GVFX models
that provide automatic backup power when utility outages occur.
The GTFX is sealed and includes a turbo fan kit. GVFX models
are vented and no fan is necessary. Use of an MPPT controller such
as the OutBack's MX 60 will greatly increase the energy harvested
from the PV array.
Multiple GTFX or GVFX inverters can be connected in series for
240 Vdc, parallel for 120 Vdc. Two-year warranty.
Extended warranty available direct from manufacturer.
All models are ETL listed to UL 1741.

PS1-3000
The new PS1-3000 from OutBack includes a GVFX 3648 inverter, MX60 MPPT charge controller,
and all AC and DC switch gear and pre-wiring necessary for a fully functional multi-purpose grid-interactive
system. It is housed in a single, easy to install enclosure which is NEMA 3R rated for
outdoor, rainproof installation. An optional battery enclosure large enough for four deep-cycleGroup
31 batteries is also NEMA 3R outdoor rated. Battery cables from PS1-3000 and
interconnects for four batteries are included. The PS1-3000 has a 5-year standard warranty. ETL
listed to UL 1741. All models below 120 Vac output.