If you use this site, you agree to our use of Cookies. More information I ACCEPT COOKIES
Fronius International
Click to choose country or language
About us Products Focus on photovoltaics Info & Support Keeping up-to-date Contact us
Home/Solar Energy/Products/Grid-connected inverters/Fronius IG Plus/Fronius IG Plus 35 V-1 

Fronius IG Plus 35 V-1

Fronius IG Plus 35 V-1
Bild zurück
Fronius IG Plus 35 V-1
SmartGridReady Single-phase inverter with 3.5 kW nominal output

The Fronius IG Plus series is synonymous with:
+ Maximum yield dependability
+ Exceptional reliability
+ Best all-round device

With its nominal output of 3.5 kW, the single-phase Fronius IG Plus 35 V-1 is the perfect choice for use in new markets as well as small family homes and/or self-consumption systems.
The inverter completes the range in the low power category for the successful Fronius IG Plus series.

Keep on the right side with the Fronius IG Plus 35 V-1 – both in terms of yield and cost-effectiveness.

Technical Data

INPUT DATA Fronius IG Plus 35 V-1
DC maximum power at cos φ=1 3,710 W
Max. array short circuit current 24.3 A
Max. input current 16.2 A
Max. input voltage 600 V
MPP voltage range 230 - 500 V
AC nominal output at cos φ=1 3,500 W
Max. output power 3,500 VA
Max. output current 15.2 A
Max. efficiency 95.7 %
Euro. efficiency 95.0 %
MPP adaption efficiency > 99.9 %
Grid connection

1~NPE 230 V

Frequency 50 Hz / 60 Hz
Harmonic distortion < 3 %
Power factor 0.75 - 1 ind. / cap.
Night consumption app. 1 W
Dimensions (height x width x depth) 673 x 434 x 250 mm
Weight 23.8 kg
Degree of protection IP 54*
Inverter concept HF transformer
Cooling Regulated air cooling
Installation indoor and outdoor installation
Ambient temperatur range From -25°C to +55°C
Permitted humidity 0 % to 95 %
DC insulation measurement Warning/shutdown (depending on country setup) at Riso < 500 kΩ
Overload behavior Operation point shift, power limiter
DC circuit breaker integrated
Optional with Fronius Datamanager WLAN, Ethernet, Modbus TCP, 6 digital inputs, 4 digital inputs/outputs, Datalogger, Webserver
 *Please follow the guidelines in the operating instructions for properly installing the inverter.
The right to make technical modifications is reserved.

Equipment features

On-site module grounding

Decide on site whether it is desirable or necessary to ground modules. Insert fuse and enable software - ready for grounding.


Indoor and outdoor use

All Fronius IG Plus devices have a rugged, elegant metal housing. They are UV-resistant and have corrosion protection, making them suitable for use both indoors and outdoors.


Integrated DC disconnector

No additional installation work or cabling is necessary. Extremely convenient and highest levels of safety according to DIN-VDE 0100-712.


Integrated string fuses

Up to 6 strings can be directly connected to all Fronius IG Plus inverters. The integrated holders for string fuses allow the module strings to be disconnected from one another depending on the module manufacturer's requirements.



Fronius MIX technology

The cleverly-devised combination of several power stage sets means Fronius inverters always achieve maximum yield, even when in the partial-load range. This is all down to the unique Fronius Master Inverter X-Change system (MIX), a development of the classic master/slave principle. How it works: all power stage sets are equal. The “master” is allocated alternately, taking into account the operating hours worked. The result is that loads are applied evenly to individual power stage sets and the operating time decreases.

HF transformer switchover

Fronius transformer inverters use a high-frequency (HF) transformer. The automatic transformer switchover facility produces three efficiency peaks. The result: a constant level of efficiency across the entire input voltage range, resulting in higher yields. Other advantages of HF transformer technology are the compact, lightweight design, a high level of efficiency and safety as a result of the electrical isolation.

Integrated WLAN interface

Simple, user-friendly system monitoring is very important to Fronius. With the Fronius Datamanager, we are the first inverter manufacturer to offer a WLAN interface in the inverter itself. The inverter is connected to the internet without additional cabling and grants you the perfect overview of how the PV system is operating.

Smart Grid Ready

Fronius inverters are ready for the Smart Grid of tomorrow. The inverters are optimally equipped to meet the technical requirements of grids in the future. A series of smart functions, known as Advanced Grid Features, are built into the devices. These include a number of control functions for optimum feed-in of reactive power and effective power. These functions are designed to enable stable grid operation even when the PV system density is very high and to prevent unwanted interruptions to feed-in and associated yield losses. Fronius inverters therefore help to guarantee the yield of a PV system.

  • Bookmark and Share
  • Back to top
  • Print