Fronius Primo 8.2-1 on-grid single-phase inverter 8.2kW

The inverter is the part that converts the direct current produced by the panels into the alternating current used in the house and sends the surplus into the grid. This model is of the on-grid type, that is it works together with the electricity grid and has no battery; when the grid goes down, it stops too, as the safety rules require. In exchange, it is very efficient and has a mounting system that eases installation: the fixing part stays on the wall, and the device is hooked over it. Production is followed from the manufacturer's online platform, over Wi-Fi or a network cable.

With 8,200 W of rated power, it covers a large single-phase residential system, and the panel field can reach 12.3 kWp - that is more power can be installed in panels than the power of the inverter, so that it produces well in the morning, in the evening or under clouds. The two independent MPPT trackers are useful when the roof has two differently oriented pitches: each group works at its own optimum point, without dragging down the other group. The efficiency of 98.1% and the night-time consumption of below 1 W mean that very little of the energy produced is lost. The IP 65 enclosure allows mounting both indoors and outdoors, between -40 and +55 C, and at 645 x 431 x 204 mm and 21.5 kg it needs a solid wall and ventilation space.

Transformerless inverter, 8,200 W / 8,200 VA; DC input 80-1,000 V, start-up at 80 V, usable MPP range 80-800 V, 2 SuperFlex MPPT with 18.0 A each (27.0 A short-circuit current of the field) and 2+2 screw DC terminals. Maximum efficiency 98.1%, European efficiency 97.5%, MPP adaptation efficiency over 99.9%, night-time consumption below 1 W. Connection 1~NPE 220/230 V (range 180-270 V), 50/60 Hz (45-65 Hz), 35.7 A, THD below 5%, power factor 0.85-1 inductive/capacitive. IP 65 enclosure, SnapINverter mounting, regulated air cooling, -40...+55 C; WLAN and Ethernet LAN communication (Fronius Solar.web, Modbus TCP SunSpec, Solar API), RS485 Modbus RTU SunSpec, Fronius Solar Net, USB, integrated datalogger and webserver. Certified to DIN V VDE 0126-1-1/A1, IEC 62109-1/-2, IEC 62116, IEC 61727, CEI 0-21, VDE AR N 4105, G59/3, G83/2; warranty 5 years, extendable through Fronius Plus.

Who it suits

Suitable for a single-phase house with high consumption and a roof on two orientations, which wants a grid-connected system, without a battery, with detailed monitoring of production.

Terms explained

• On-grid: The inverter works only in parallel with the electricity grid; it has no battery and, during a power cut, it stops, as the safety rules require.
• Two independent MPPT: Two inputs that separately search for their optimum operating point; you can connect panels on two roof pitches with different orientations or lengths, without one dragging down the other.
• Zero feed-in (export limitation): A setting by which the inverter automatically reduces production so as not to send current into the grid, when the contract or the operator does not allow export.

Technical specifications

Recommended applications

• High-power single-phase residential self-consumption
• Roofs with two orientations, through the two SuperFlex MPPT
• Systems with grid export limitation (zero feed-in)
• Retrofit and extension on existing Fronius installations

Warranty

5 years standard manufacturer warranty, extendable through Fronius Plus

Technical details

Specifications confirmed from the manufacturer's datasheet

Fronius Primo 8.2-1 is a single-phase grid inverter, transformerless, with 8,200 W of rated AC power and 8,200 VA of maximum apparent power. The photovoltaic generator can reach 12.3 kWp, with a DC voltage of 80-1,000 V, start-up at 80 V and a very wide usable MPP range, 80-800 V. The SuperFlex design offers 2 independent MPPT trackers, with 18.0 A maximum current each (27.0 A short-circuit current of the field) and 2+2 screw DC terminals, which allows different string orientations and lengths.

The maximum efficiency is 98.1%, the European efficiency 97.5%, and the MPP adaptation efficiency over 99.9%. The night-time consumption is below 1 W. The connection is 1~NPE 220/230 V (range 180-270 V), 50/60 Hz (45-65 Hz), 35.7 A, THD below 5%, power factor 0.85-1 inductive/capacitive.

The IP 65 enclosure (645 x 431 x 204 mm, 21.5 kg) uses the SnapINverter system for fast mounting, indoors or outdoors, with regulated air cooling and operation from -40 to +55 C. The communication package includes WLAN and Ethernet LAN (Fronius Solar.web, Modbus TCP SunSpec, Solar API), RS485 Modbus RTU SunSpec, Fronius Solar Net, USB, integrated datalogger and webserver. Certified to DIN V VDE 0126-1-1/A1, IEC 62109-1/-2, IEC 62116, IEC 61727, CEI 0-21, VDE AR N 4105, G59/3, G83/2.