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SMA Sunny Island SI 4548-US 4500W 48V Off-Grid Inverter, Smartformer Compatible, 96% Maximum Efficiency
SMA Sunny Island SI 4548-US 4500W 48V Off-Grid Inverter, Smartformer Compatible, 96% Maximum Efficiency


 

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Product Code: SI-4548-US
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Description Spec Sheet / Manual Technical Specifications
 

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SMA Sunny Island SI 4548-US 4500W 48V Off-Grid Inverter, Smartformer Compatible, 96% Maximum Efficiency

The new SMA Sunny Island 4548-US and 6048-US inverters are based on the proven off-grid technology in the Sunny Island 5048-US but now feature 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.

Efficient
  • Max. efficiency: 96 percent
  • CEC efficiency: 94 % and 94.5 %
  • State of Charge Calculation
  • Intelligent battery management for longer battery lifespan
Simple
  • Easy commissioning with the “Quick Configuration Guide”
  • Complete off-grid management
  • Excellent for grid-tied battery back up
Flexible
  • For systems from 2 kW to 100 kW
  • Single, 120/240 V split-phase and three-phase operation, connectable in parallel and modularly expandable
Durable
  • Extreme overload capacity
  • OptiCool active temperature management system
  • 5-year standard warranty

Specifications
Output data (loads)
Rated Grid Voltage/AC Voltage Range 120 V/ 105 V - 132 V
Rated Grid Frequency/Frequency Range 60 Hz/ 55 Hz – 65 Hz
AC power at 25 °C / 40 °C for 3 hours 5000 W / 4000 W
Rated power 4500 W
Rated current 37.5 A
Max. current (60 ms) 180 A
Total harmonic factor output voltage 3%
Power factor with rated power –1 to +1
Input data (PV array or grid)
Rated input voltage/AC input voltage range 120 V /80 V – 150 V
Rated input frequency/ allowable range 60 Hz / 54 Hz – 66 Hz
Max. AC input current /adjustable 56 A /0 A – 56 A
Max. AC input power 6.7 kW
Battery DC input
Rated input voltage/ DC voltage range 48 V /41 V – 63 V
Max. battery charging current 100 A
DC rated charging current 85 A
Battery capacity range 100 – 10 000 Ah
Charge control IUoU with automatic full and equalization charge
Efficiency/Protection
Max. efficiency/ CEC efficiency 96 %/ 94%
Self-consumption with no load /standby 25 W / 4W
Protection type NEMA 1 (indoors)
Certification UL 1741 / UL 1998
Device protection short-circuit, overload, overtemperature, battery deep discharge
Mechanical data 4548-US
Width / height / depth 18.4 / 24.1 / 9.3 inch (467 / 612 / 235 mm)
Weight 139 lbs (63 kg)
Operating temperature range –13°F ... 122°F (–25 °C ... +60 °C)
Warranty 5 years

SMA Sunny Island Commissioning - Basic Setup
Tech Tip: Sunny Island Menu Overview
Tech Tip: Sunny Island Dig-In
Sunny Island: Connect to the Utility Grid in Only Eight Steps

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