OutBack Radian GS4048A, GS8048A and GS8048 inverters work equally well as a grid-tie or off-grid inverter. There are two separate AC inputs, one for the bi-directional grid connection and one for a backup generator. There is a built-in 50 A transfer switch at 120/240 VAC. The output is 120/240 VAC split phase in each unit for easy tie-in to US standard wiring and grid connections. The Radian features 4 kW or 8 kW of continuous output power and can support large dynamic load variations and surge loads, making it well suited for demanding commercial applications as well as residential use. The GS4048A and GS8048A support a wider range of battery charging parameters and are reccomended when using advanced battery chemistries, such as litium ion. These two inverters also include OutBack's new Grid Zero feature, which enables them to manage input from the utility grid in parallel with the inverter output, and are reccomended for systems that aren't net metered. With two power stages, the GS8048 and GS8048A are able to provide high efficiency and redundancy for critical applications, and the modular design is field serviceable. The Radian series inverters can be parallel stacked with up to 10 inverters for 80 kW total output. The GS8048A and GS4048A can also be stacked for a 12 kW system. In fully off-grid applications, the minimum recommended battery size is 175 Ah for the GS4048A and 350 Ah for the GS8048 for each inverter installed in a power system. Grid-tie with backup systems can work with battery banks as small as 200 when a generator is included in the system.
Outback's Radian GS3548E and GS7048E inverters for export work as either a grid-tie or off-grid inverter. There are two separate AC inputs, one for the bi-directional grid connection and one for a backup generator. There is a built-in 50 A transfer switch at 230 VAC. The output is 230 VAC 50 Hz (or 60 Hz) single phase in each unit for easy tie-in to most world-wide standard wiring and grid connections. The Radian features 3.5 kW or 7 kW of continuous output power and can support large dynamic load variations and surge loads, making it well-suited for demanding commercial applications as well as residential use.
All Radian series inverters also feature auxiliary controls that include a contact closure, a 12 VDC output signal, and terminals for a remote on/off switch as well as a remote temperature sensor (RTS) for the battery bank. The GS8048 and GS8048A require dual 2/0 battery cables (two positive and two negative) for connection to the battery bank.
The inverter comes with a standard 5-year warranty. An optional 10-year extended warranty is available where required by state incentive programs. The Radian is not rated for outdoor use. Dimensions are 28"H x 16"W x 8.7"D. Weight is 84 lbs for the GS4048A and GS3548E, and 125 lbs for the GS8048, GS 8048A and GS7048E. Listed to UL 1741 for U.S.A. and Canada.
A MATE3, HUB4 or HUB10, and an appropriate GSLC (below) are needed to complete a Radian system.
The GS Load Center (GSLC) is a wiring and circuit protection enclosure that mounts under the Radian inverter. It is available in three versions: The base GSLC includes positive and negative main inverter busbars, a 500 A 50 mV shunt with negative terminal bar, the main DC positive breaker plate, ground and neutral terminal bars, and 2 PV positive terminal bars. It can also accommodate up to 18 AC or DC panel mount breakers (10 top, 8 bottom), two main 175 A DC breakers and a FLEXnetDC, which can be purchased separately. Up to two charge controllers can mount on the right side (mounting brackets not included), and either the HUB4 or HUB10 can mount on the left side.
The GSLC175-120/240 includes the base unit plus two 175 A DC main breakers, an AC output and bypass breakers with interlock plate, an AC grid and generator input breakers (50 A two pole), and six AC terminal bars (3 black, 3 red). It can also accommodate 10 additional panel mount breakers, which can be purchased separately.
The GSLC175-PV-120/240 includes the 175-120/240 unit plus two 80 A PV array breakers, a two pole GFDI 80 A breaker, three 500. A 50 mV shunts with shunt bus, and a FLEXnetDC. The GFDI acts as the breaker between the control and positive bus; there are no other breakers added for this purpose. It can also accommodate 5 additional panel mount breakers, which can be purchased separately.
Outback's Radian inverter can be used for an AC coupled system with the use of the OutBack GSLC175- AC-120/240 load center. This load center, with the Radian inverter and its integrated controls, makes the installation of an AC coupled system simpler and cleaner than it has been previously. It has all of the connections, breakers and relays needed for adding a battery-based backup system to an existing or new grid-tie system utilizing a Radian inverter and battery bank. There are controls and relays to manage battery charging from the grid-tie system with battery temperature compensation. A second AC input is available for a backup generator to assist in powering the loads during an extended outage if there is not enough sun, or there are more loads than expected. There is an auto generator start relay with grid-tie inverter lockout when under generator power. No diversion loads or other external relays are required. There are connection points for the utility grid, the protected loads panel, the grid-tie inverter, an optional backup generator, and the battery bank. The required MATE3 now has a new AC coupling function. The rating of the grid-tie inverter should not exceed 6 kW. You will also need a GS8048 inverter, MATE3, battery bank, protected load center, and the existing GT inverter system to complete an AC coupled Radian system. The GSLC175-AC-120/240 is for indoor use only. Dimensions are 17"H x 16"W x 8.5"D. Weight is 38 lbs.
The AC bypass assembly is only for use with a single Radian inverter. For multiple inverters, use the basic GSLC with added DC and AC breakers as needed (no bypass) and use external transfer switches for bypass and external AC load centers for output combining and input distribution. One GSLC is required for each Radian inverter, and each inverter requires two 175 A main DC breakers. The GSLC is not rated for outdoor use. Dimensions are 17"H x 16"W x 8.5"D. Weight is 26, 37, or 38 lbs. Listed to UL 1741 for U.S.A. and Canada.