Fronius Tauro ECO 100-3-P
Austrian engineering meets commercial solar excellence with this robust three-phase transformerless inverter designed for large-scale photovoltaic installations. Delivering a substantial 100kW of nominal AC power with an impressive maximum efficiency of 98.5%, this industrial-grade unit handles demanding commercial and utility-scale projects with exceptional reliability. The single MPPT channel accommodates up to 175A of DC input current across a voltage range of 580-930V, while maintaining optimal performance in extreme conditions from -40°C to +65°C. Built to withstand harsh outdoor environments, the IP65 protection rating ensures reliable operation despite dust, moisture, and temperature fluctuations. At 103kg, this transformerless design eliminates the bulk and maintenance requirements of traditional transformer-based systems while delivering consistent three-phase output at standard European voltages.
Technical Specifications
| Nominal AC Power | 100000 W |
| Maximum AC Power | 100000 W |
| Maximum Efficiency | 98.5 % |
| European Efficiency | 98.2 % |
| MPPT Voltage Range | 580 - 930 V |
| Maximum DC Input Voltage | 1000 V |
| Number of MPPT Channels | 1 |
| Maximum DC Input Current per MPPT | 175 A |
| AC Output Voltage | 3~ NPE 380/220 , 3~ NPE 400/230 V |
| AC Output Frequency | 50 / 60 Hz |
| Weight | 103 kg |
| Enclosure Protection Rating | IP65 |
| Operating Temperature Range | -40°C - +65°C °C |
| Inverter Type | Transformerless |
| Number of Phases | 3 |
Frequently asked questions
What scale of project is the Fronius Tauro ECO 100-3-P built for?
The Fronius Tauro ECO 100-3-P is rated at 100,000 W of nominal AC power with the same 100,000 W as its maximum, which places it in commercial and industrial plant rather than housing. Because there is no AC overload margin above 100 kW, the DC array is sized accepting that the brightest hours will be clipped.
How many MPPT trackers does the Fronius Tauro ECO 100-3-P have?
The Fronius Tauro ECO 100-3-P records a single MPPT channel accepting up to 175 A of DC input current. One tracker for 100 kW means the whole array is optimised as one block, so every string feeding it should share orientation, tilt and shading pattern. A 175 A input also implies many strings paralleled ahead of it in external combiners.
What is the MPPT voltage window of the Fronius Tauro ECO 100-3-P?
The Fronius Tauro ECO 100-3-P tracks only between 580 V and 930 V, with 1000 V of maximum DC input voltage. That narrow, high window rules out short strings: each string has to clear 580 V at its hottest operating temperature and stay under 1000 V at the coldest dawn, which fixes string length within a tight band at design stage.
How efficient is the Fronius Tauro ECO 100-3-P?
The Fronius Tauro ECO 100-3-P is rated at 98.5 percent maximum efficiency and 98.2 percent European efficiency. The narrow 0.3 point gap between them shows conversion efficiency holds up across the load range and not only at the optimum point. On a 100 kW plant the European figure means under two percent of annual DC energy is lost in conversion.
What grid connection does the Fronius Tauro ECO 100-3-P require?
The Fronius Tauro ECO 100-3-P is three-phase, listed as 3~NPE 380/220 V or 3~NPE 400/230 V at 50 or 60 Hz. Each pair is a single four-wire configuration: 400 V between phases with 230 V to neutral, or the 380/220 V equivalent. At 100 kW the AC side is a dedicated low-voltage feeder sized for full output.
Where can the Fronius Tauro ECO 100-3-P be installed?
The Fronius Tauro ECO 100-3-P is rated IP65 with a declared operating range of -40 to +65 degrees Celsius, so it can sit outdoors beside the array in very cold or very hot climates. At 103 kg it is no manual lift: allow for mechanical handling, a support structure that carries that mass, and clearance for service access.
Guides that cover this model
Source: www.fronius.com