SMA Sunny Island
5,000 Watts Max. Power
|SMA Model Number
|Rated Usable AC Power
|CEC Weighted Efficiency
|Rated Battery Charging Current
SMA Sunny Island 4548-US InverterSKU 4548-US
SMA Sunny Island 4548-US Inverter/Charger
The ideal solar system battery backup inverter for off-grid power
Use the 4548-US with any grid-tied system for on-grid battery backup or off-grid AC power.
The SMA Sunny Island 4548-US inverter is based on the proven off-grid technology in the Sunny Island 5048-US but now features 20 percent more power output. A maximum efficiency of 96 percent ensures peak production, which results in reduced diesel usage and makes a smaller dimensioning of the PV array possible. The new Sunny Island with two different power ratings enable more flexible system sizing. And, with Multicluster technology, up to 12 Sunny Islands can be integrated into off-grid power systems up 100 kW in size.
For Grid Connected Applications
The Sunny Island can be added to any existing grid-tie system or even for backup power during power outages. Normally, a grid-tied inverter will shut off during a power outage, leaving you without power. With a complete Sunny Island system, the grid-tie inverter supplies AC power from a solar panel array to charge a battery bank. The Sunny Island reliably supplies power for loads and intelligently monitors and charges battery banks with the energy from local AC sources such as solar, wind or gensets connected on the AC side.
For Off-Grid Remote or Island Power Applications
Featuring sophisticated generator management and true battery state of charge control, the Sunny Island can control a diesel generator connected to it in an extremely fuel efficient manner.
The SI4548-US inverter can be integrated into a public grid or island power grid. This grid can be connected by solar microgrids powered by Sunny Boy PV inverters that are distributed anywhere along the AC grid.
The Sunny Island can be programmed to deactivate loads automatically if the battery is unable to provide sufficient power. This reduces risk of damage to the battery bank.
The redundant design of SMA's AC and DC coupling technology, and expandability of the Sunny Island based solar systems assures the highest reliability and flexibility.
Sunny Island inverters are robust hard-working inverters yet are also designed for regular partial load operation. The Sunny Island has extremely low open-circuit and standby consumption which results in longer battery life, smaller required solar panel array size and reduced diesel usage in rural communities.
Sunny Island 4548-US Inverter/Charger Review
The SMA Sunny Island 4548-US inverter is based on proven off-grid technology and feature industry leading power output. A maximum efficiency of 96 percent ensures peak production, which results in reduced diesel usage in rural communities. More flexible sizing allows for simplified system planning. And, with multicluster technology, up to 12 Sunny Islands can be integrated into off-grid power systems up 110 kW in size. The critical component in off-grid power systems, the battery, is monitored diligently and utilized cost-effective batteries can be used without affecting performance. Possible an improved utilization of the battery capacity, which also means that smaller and thus more cost-effective batteries can be used without affecting performance.
In order to prevent premature aging caused by incorrect charging and frequent deep discharge, the Sunny Island has an intelligent charge control and reliable deep discharge protection. Because of these functions, the battery service life can be greatly extended in comparison with simpler devices. Despite its complex functioning, the Sunny Island is easy to configure. All the settings required for operation can be quickly and easily programmed in a few steps using the ”Quick Configuration Guide”. By employing the concept of central operation referred to as ”Single Point of Operation”, the system/cluster parameters are only set on the master device. All other system devices adopt the configuration automatically. The easy-to-understand menu navigation allows quick access to all important data, even while the system is running. An SD card provides uncomplicated system control, and thus facilitates any service work.
The Sunny Island monitors the set voltage and frequency limits on the grid and generator. If these limits are not observed, it disconnects from the external source without interruption and changes to off-grid Sunny Island 4548-US inverter operation.
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