Fronius IG Plus 12.0-3 Inverter Review
Fronius IG inverters come standard with an integrated LCD that displays and records over 20 parameters pertaining to inverter and system operation. Fronius inverters have 3 expansion slots that allow you to add features like external sensors and remote displays. You can use a personal computer to update the inverter with the latest software upgrades. The larger inverters (over 3 kW) are built with the same power stages as the smaller ones, but use 2 of them. When these inverters see array capacity at less than half, one stage turns off, giving the inverter higher efficiency during periods of low isolation.
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Fronius IG Plus inverters offer all the features of the IG and add a lockable code-compliant DC disconnect with fused string combiner in a separable connection compartment that stays on the wall if the inverter needs to be serviced. The single phase inverters are field settable for 208, 240 or 277 volts. Two true three-phase output units are also available. They can be configured for positive or negative ground.
The Fronius IG Plus 12.0-3 Inverter works well with all PV modules and is suitable for all system sizes. Compatible with all module configurations. The Fronius IG Plus works optimally with all module types, including amorphous modules. The Fronius IG Plus works well with all module types because of its wide input voltage range, galvanic isolation, field programmable grounding option, and its precise MPP tracking feature.
Three efficiency peaks.
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: Consistently 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.
MIX™ Concept.
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.
Module Manager™.
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.
Smart Ventilation Design.
Disruptive ambient factors such as dust or moisture remain on the outside: The reason: Cooling air is drawn in on the wall side and routed through a closed channel over the heat sink. This prevents contact with the circuit board. At the same time, the components are kept cool – the device operates with a stable consistency.
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
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 available in 277 volts), eliminating the need to install different inverter models to accommodate three-phase installations.
Fronius Technical Data
Technical Data
Fronius IG Plus 12.0-3WYE277
Input data
♦Recommended PV-Power (Wp): 10200-13800
♦MPPT-Voltage range: 230 – 500 V
♦Max. Input voltage range:* 600 V
♦Nominal Input Current: 33.1 A
♦Max. usable Input Current: 56.1 A
♦Admissible conductor size (DC): No. 14-6 AWG
Output data
♦Nominal output power (PAC nom): 12000 W
♦Max. continuous output power 104°F (40°C) 208 V/240 V/277 V: 12000W
♦Nominal AC output voltage: 277 V
♦Operating AC voltage range (default)
♦208 V 183 – 229 V (-12 / +10 %)
♦240 V 211 – 264 V (-12 / +10 %)
♦277 V 244 – 305 V (-12 / +10 %)
Nominal output current
♦208 V n.a.
♦240 V n.a.
♦277 V 14.4 A
Max. output current
♦208 V n.a.
♦240 V n.a.
♦277 V 16.4 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
Fronius General data
♦Max. Efficiency 96.2 %
♦CEC Efficiency
♦208 V n.a.
♦240 V n.a.
♦277 V 96.0 %
♦Consumption in standby (night) < 1 W
♦Consumption during operation 22 W
♦Cooling Controlled forced ventilation, variable fan speed
♦Enclosure Type NEMA 3R
♦Unit Dimensions (W x H x D) 17.1″ x 48.1″ x 9.6″ (434.4 x 1221.7 x 243.8 mm)
♦Inverter Weight 82 lbs. (37 kg)
♦Wiring Compartment Weight 26 lbs. (12 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)
Safety equipment
♦Ground fault protection Internal GFDI (Ground Fault Detector/Interrupter); in accordance with UL 1741-2005 and NEC Art. 690
♦DC reverse polarity protection Internal diode
♦Islanding protection Internal; in accordance with UL 1741-2005, IEEE 1547-2003 and NEC
♦Over temperature Output power derating / active cooling
PDF’s
Fronius IG Plus 12.0-3 Inverter Data Sheet
Fronius IG Plus 12.0-3 Inverter operating Manual
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Fronius IG Plus 12.0-3 Inverter
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