Log in | My Account | ![]()
Cart: 0 items
| List Price: | $8,221.00 |
| Our Price: | $5,838.00 Save: $2,383.00 (29%) |
| Model: | SI5048U |
| Brand: | SMA - America |
|
Our Code: SMASI5048U |
SMA
America
Sunny Island 5048U
SMA’s next generation of Sunny Island inverters combines the most advanced technology used in their Sunny Boys with an outstanding feature set for off-grid PV applications.
The new Sunny Island 5048U has incredible surge capabilities and excellent AC output characteristics. Each unit provides a very clean and stable 120 VAC output. Multiple units can be used together for single-phase, split-phase or three-phase applications.
The Sunny Island also features the unique ability to facilitate AC coupling of all power generation sources. This makes for efficient use of available AC power and greatly simplifies system expansion. The Sunny Island 5048U also helps to optimize the overall life of the batteries through its advanced battery management system.
This inverter can also be utilized as a back-up system in grid-tied applications. Its seamless transfer allows existing Sunny Boy inverters to be utilized during daytime grid outages. The Sunny Island 5048U is an extremely robust and sophisticated unit providing both off-grid and back-up users with the highest quality available in the industry today.
Features:
One of the greatest benefits of AC coupling is that it allows virtually any type of power generating device to be connected to the system, i.e. solar, wind, water, even gas or diesel powered generators. This provides system designers the opportunity to take advantage of all the resources available to them at a given location.It also allows for easy system expansion by providing a simple solution for integrating future power sources.
The Sunny Island has also been designed for easy expansion. The power provided by the Sunny Island can be increased simply be adding an additional Sunny Island inverter in parallel. AC coupling provides
easy system expansion and ensures that over the long term, the system will continue to serve the needs of its users safely and reliably.
Specifications:
| Output data | |
| Nominal AC voltage (adjustable) | 120 V (105 V – 132 V) |
| Grid frequency adjustable | 55 Hz – 65 Hz |
| Continuous AC output at 25 °C / 45 °C | 5000 W / 4000 W |
| Continuous AC output at 25 °C for 30 / 5 / 1 min | 6500 W / 7200 W / 8400 W |
| Nominal AC current | 41.7 A |
| Max. current | 150 A (for 100 ms) |
| Output voltage harmonic distortion factor | < 3 % |
| Power factor | –1 to +1 |
| Input data | |
| Input voltage (range) | 120 V (80 V – 150 V) |
| Input frequency | 54 Hz – 66 Hz |
| Max. AC input current (adjustable) | 56 A (2 A – 56 A) |
| Max. input power | 6.7 kW |
| Battery data | |
| Battery voltage (range) | 48 V (41 V – 63 V) |
| Max. battery charging current | 120 A |
| Continuous charging current | 100 A |
| Battery capacity | 100 – 10 000 Ah |
| Charge control | IUoU with automatic full and equalization charge |
| Efficiency/power consumption | |
| Max. efficiency (typical) | 95 % |
| Own consumption with no load (standby) | 25 W (< 4 W) |
| Protection type | NEMA 1 |
| Certification | UL 1741 / UL 1998 |
| Device protection | short-circuit, overload, overtemperature |
| Interfaces | 2 LEDs, 4 buttons, 2-line display, 2 multifunction relays, RS485 / RS232 / CAN electrically separated (optional), MMC/SD card |
| Mechanical data | |
| Width / height / depth | 18.4 / 24.1 / 9.3 inch (467 / 612 / 235 mm) |
| Weight | 139 lbs (63 kg) |
| Ambient conditions | |
| Ambient temperature | –13°F ... 122°F (–25 °C ... +50 °C) |
| Warranty | 5 years |
| Accessories | |
| Ext. battery temperature sensor | included |
| “GenMan” generator manager | optional |

“Keep up the good work. Your personal customer service is great. It was great being so well informed about the status of my order.”
Brian - Waco, TX
“I'm really happy for the support you gave (and I had just given one of [your competitor's] many answer machines a hard time, so you can tell your bosses that friendly phone service works! :-) )
cheers”
Eva - Stuart, FL
“I tend to be impatient because nothing is easy to get for this solar project. That's why I shop with you guys. You have everything and knowledge that is second to none and I have dealt with many solar people.”
Philip - Middle Island, NY