The IG-4000 Inverters from Fronius utilize high frequency, phase-shift architecture to deliver high performance while reducing size, weight, and installation cost.

Features and General Information

LCD Display: Comes standard with every FRONIUS IG and tracks more than 20 critical system performance parameters
The Fronius IG Module Manager tm software locks onto the array’s maximum power point to optimize the energy output from your array.

Active Cooling- The inverters operate reliably at full power, without de-rating, over a wider range of temperatures than competing inverters.
Phase Shift Technology- Unique phase-shift design maximizes switching efficiency. Switching losses are minimized through an innovative process, allowing an even higher efficiency to be maintained..

Fully programmable operation

The Fronius IG uses a high frequency transformer, which is substantially smaller than the 60 Hz transformers used in inverters with one-stage topologies. The transformer also provides galvanic isolation. Since transformers are largely made of copper and iron, that's a lot of raw metal that is no longer necessary.
We have optimized the output inductor to put two inductors on one coil. Many other inverters use 2 separate inductors, which adds up to a heavier inverter.

A wide input voltage range permits the use of modules of every power size and voltage. You can easily fine-tune your system with different wattage modules and string configurations. The voltage window for the entire Fronius IG series is 150--500Vdc.
Every FRONIUS IG comes standard with integrated DC and AC disconnects. Both DC and AC electrical connections are made in the convenient installer accessible wiring compartment. We’ve pre-wired the DC breaker to a heavy-duty terminal block that accepts up to eight #8 AWG conductors.
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