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Fronius IG Plus 3.0-1 uni - 3.8-1 uni
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+ Highest Reliability
+ First Universal Inverter
The smallest size inverter in the Fronius IG Plus family. Available in 3.0 and 3.8 kW. Best suited for smaller solar applications, e.g. residential and smaller commercial applications.
Available Fronius IG Plus Single Stage Inverters:
3.0-1 UNI
3.8-1 UNI
Operating Manual
Technical Data
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Fronius IG Plus
| 3.0-1UNI |
3.8-1UNI
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Input data |
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| Recommended PV-Power (Wp) | 2500-3450 | 3200-4400 |
| MPPT-Voltage range | 230 - 500 V | 230 - 500 V |
| Max. Input voltage range (at 1000 W/m² 14°F (-10°C) in open circuit operation) |
600 V | 600 V |
| Nominal Input Current | 8.3 A | 10.5 A |
| Max. usable Input Current | 14.0 A | 17.8 A |
| Admissible conductor size (DC) | No. 14-6 AWG | |
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Output data |
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| Nominal output power (PAC nom) | 3000 W | 3800 W |
| Max. continupous output power 104°F (40°C) 208 V / 240 V / 277 V |
3000 W | 3800 W |
| Nominal AC output voltage | 208 V / 240 V / 277 V | |
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Operating AC voltage range (default) |
183 - 229 V (-12 / +10 %) 211 - 264 V (-12 / +10 %) 244 - 305 V (-12 / +10 %) | |
| Maximum continuous output current 208 V 240 V 277 V |
14.4 A 12.5 A 10.8 A |
18.3 A 15.8 A 13.7 A |
| Admissible conductor size (AC) | No. 14 - 4 AWG | |
| Max. continuous utility back feed current | 0 a | |
| Nominal frequency | 60 Hz | |
| Operating frequency range | 59.3 - 60.5 Hz | |
| Total harmonic distortion | < 3 % | |
| Power factor | 1 | |
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General data |
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| Max. Efficiency | 96.2 % | |
| CEC Efficiency 208 V 240 V 277 V |
95.0 % 95.5 % 95.5 % |
95.0 % 95.5 % 95.5 % |
| Consumption in standby (night) | <1 W | |
| Consumption during operation | 8 W | |
| Cooling | Controlled forced ventilation, variable fan speed | |
| Enclosure Type | NEMA 3R | |
| Unit Dimensions (W x H x D) | 17.1 x 24.8 x 9.6. in. | |
| Power Stage Weight | 31 lbs. (14 kg) | |
| Wiring Compartment Weight | 24 lbs. (11 kg) | |
| Admissing ambient operating temperature | -4 ... 122°F (-20 ... + 50°C) | |
| Compliance | UL 1741-2005, IEEE1547-2003, IEEE 1547.1, ANSI/IEEE C62.41, FCC Part 15 A&B, NEC Article 690, C22. 2 No. 107.1-01 (Sept. 2001) | |
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Safety equipment |
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| Ground fault protextion | Internal GFDI (Ground Fault Detector/Interrupter); in accordance with UL 1741-2005 and NEC Art. 690 | |
| DC reverse polarity protevtion | Internal diode | |
| Islanding protection | Internal; in accordance with UL 1741-2005, IEEE 1547-2003 and NEC | |
| Over temperature | Output power derating / active cooling | |
The right to make technical modifications is reserved.
Equipment features
Grounding selectable on site.
Decide on site what type of grounding is required as the Fronius IG Plus is field programmable for either positive or negative module grounding.
Designed for indoor and outdoor installations.
All Fronius IG Plus inverters have a robust, well designed aluminum housing. UV resistance and corrosion protection enable them to be used either indoors or outdoors. Fronius is proud to be one of the only inverters tested and approved to operate at 122° F.
Integrated DC disconnect.
No external DC disconnect installation or cabling is necessary. The Fronius IG Plus comes complete with an approved, built-in, lockable and load breakable DC Disconnect.
The new power plug system.
The connection area and power stages are installed separately from each other. Very easy and extremely safe: The connection area is attached to the wall as normal. Then the power module is simply plugged in. The power plug connects both parts into one secure unit. If service is required, the connector remains on the wall maintaining all settings and configurations.
Field Programmable AC output voltage.The Fronius IG Plus inverter line from 3.0 to 11.4 kW is field programmable to 208, 240 or 277 volts (Fronius IG Plus 12.0 kW only availabale in 277 volts), eliminating the need to install different inverter models to accommodate three-phase installations.
Technology
Greater power harvest for every system size: The unique automatic transformer switching function of the Fronius IG Plus makes enables not one, but three equal efficiency peaks. The result: Consistantly high efficiency over a wide input voltage range.
In comparison: The efficiency of inverters without transformer switching declines steadily with an increasing input voltage. Devices without a transformer only have one efficiency peak.
With a 96.2 % maximum efficiency, the Fronius IG Plus series scores the highest grade among HF devices.
Get the maximum power harvest out of partial load ranges, e.g. on cloudy days, through a clever combination of multiple power stages in each inverter. The power stages in Fronius inverters divide up the work depending on operating hours and only operate as many power stages as required to efficiently process available power from the PV array.
The Module Manager™ keeps all Fronius IG inverters at the maximum power point (MPP) with fast and exact MPP tracking, ensuring that you get the most power out or each ray of sunlight. This is especially important for amorphous modules whose MPP can be more challenging to track.
Disruptive ambient factors such as biological infestation, dust, moisture or coastal salt air stay outside the new Fronius IG Plus Inverters away from the circuitry. How: Cool air is drawn in through a filter screen on the back of the invertar and routed through a closed channel over the heat sink. This prevents contact between outside air and the circuit boards while cooling the inverter components ensuring the inverter operates consistendly. All circuit boards are also dipped in Conformal coating to prpovide an added measure of protection.