Fronius Primo UL
The communicative inverter for private households.
The tranformerless Fronius Primo is the ideal compact single-phase inverter for residential and small-scale commercial applications with power categories from 3.8 to 8.2 kW. In accordance with ESA rules for residential applications, the Fronius Primo can operate efficiently at a maximum input voltage of 600 V. And for increased efficiency and additional cost savings for commercial applications, the Fronius Primo can operate at the maximum input voltage of 1,000 V.
Industry-leading features now come standard with the Fronius Primo, including: dual maximum power point tracking, arc fault protection, integrated wireless monitoring and SunSpec Modbus interfaces for seamless monitoring and datalogging via Fronius' online and mobile platform, Fronius Solar.web.
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Technical Data
Input Data
| Number of MPPT | 2 |
|---|---|
| Max. usable input current | 18,0 / 18,0 A |
Max. usable input current total (MPPT1 + MPPT2) | 36 A |
| Max. array short circuit current (1.5 * Imax) | 27 / 27 A |
DC input voltage range (Udc min - Udc max) | 80 - 1000 V |
MPP voltage range (Umpp min - Umpp max) | 240 - 800 V |
| Max. input voltage | 1000 V |
Output Data
| Max. output power 240 V | 5000 VA |
|---|---|
| Max. output power 208 V | 5000 VA |
Output configuration | 1~ NPE 208 / 240 V |
| Frequency range | 45 - 66 Hz |
| Frequency | 60 Hz |
| Total harmonic distortion | < 5 % |
Power factor range | 0,85 - 1 ind./cap. |
| Max. continuous output current 240 V | 20,8 A |
| Max. continuous output current 208 V | 24 A |
| OCPD/AC breaker size 208 V | 30 A |
| Max. efficiency | 96,9 % |
| CEC efficiency 240 V | 95,5 % |
| CEC efficiency 208 V | 95,5 % |
General Data
| UL safety standards & network regulations | UL 1741-2010, UL 1998, UL 1699B Issue 2-2013 |
|---|---|
| Dimension / width | 432,7 mm |
| Dimension / height | 642,5 mm |
| Dimension / depth | 204,5 mm |
| Weight | 21,16 kg |
| Weight incl. packaging | 25,8 kg |
| Weight | 21,5 kg |
| Degree of protection | NEMA 4X |
| Night time consumption | < 1 W |
| Inverter design | Transformerless |
| Cooling | Variable speed fan |
| Max. altitude | 4000 m (13120 ft) with a max. input voltage of 1000 V |
| Certificates and compliance with standards | UL 1741-2010 Second Edition (incl. UL1741 Supplement SA 2016-09 for California Rule 21 and Hawaiian Electric Code Rule 14H), UL1998 (for functions: AFCI, RCMU and isolation monitoring), IEEE 1547-2003, IEEE 1547.1-2003, ANSI/IEEE C62.41, FCC Part 15 A & B, NEC 2017 Article 690, C22. 2 No. 107.1-16, UL1699B Issue 2 -2013, CSA TIL M-07 Issue 1 – 2013 |
| DC connection terminals | 4x DC+ and 4x DC- screw terminals for copper (solid/stranded/fine stranded) or aluminium (solid/stranded) |
| AC connection terminals | Screw terminals 12 - 6 AWG |
| Revenue Grade Metering | Optional (ANSI C12.1 accuracy) |
| Interference emission class | B |
Protection Devices
| DC reverse polarity protection | Yes |
|---|---|
| Anti islanding | internal in accordance with UL 1741-2016-09, IEEE 1547-2003 and NEC 2017 |
| Over temperature protection | Output power derating / Active cooling |
| AFCI | Yes |
| Rapid shutdown compliant | Yes (according to NEC 2014) |
| Ground fault protection with isolation monitor interrupter | Yes |
| DC disconnect | Yes |
Interfaces
| Wi-Fi / Ethernet LAN | Wireless standard 802.1 1 b/g/n / Fronius Solar.web, SunSpec Modbus TCP, JSON |
|---|---|
| USB (A socket) | Datalogging and inverter update possible via USB |
| 2x RS422 (RJ45 socket) | Fronius Solar Net |
| Datalogger and webserver | Included |
| Serial RS485 | SunSpec Modbus RTU |
| 6 inputs and 4 digital I/Os | Load management signaling, multipurpose I/O |
SnapINverter technology
The SnapINverter generation of inverters features a simple, standardised mounting system, making installation and maintenance easier than ever. A special feature in the design of the device is that the connection area is separate from the power stage set compartment, with both being installed separately. The remarkably light connection area and all its cabling is fitted to the wall first, followed by the power stage set. The innovative hinged system makes installation and servicing extremely user-friendly. The inverter is simply placed in the wall bracket and then secured. This means that it is not necessary to remove the entire inverter for servicing, just the power stage set. All the cabling remains in place.
Integrated data communication
We are the first inverter manufacturer to offer a data communication package with fully integrated datalogging, WLAN, Ethernet, energy management, web server and a range of interfaces. The inverter is connected to the internet by network cable or WLAN - without additional cabling - and grants you the perfect overview of how the PV system is operating. Connection to third-party components is provided by means of interfaces such as Modbus TCP SunSpec, Modbus RTU SunSpec or Fronius Solar API (JSON). The open interfaces can also be operated in parallel to the Fronius Solar.web.
SuperFlex design
The Fronius SuperFlex Design is an ingenious combination of technical performance attributes that make designing your PV system not only extremely simple, but also incredibly flexible. The key performance factors of the SuperFlex Design are two MPP trackers, together with a high system voltage and wide DC input voltage range. Every DC input, and therefore every MPP tracker, is able to accommodate the entire nominal output of the inverter. Regardless of whether the inverter has to cope with different roof orientations, shading of one or two strings, or the use of residual modules: a Fronius inverter featuring integrated SuperFlex Design will satisfy every conceivable operational PV system planning scenario using just a single inverter model.
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. They 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 if grid parameters exceed the thresholds. Fronius inverters therefore help to guarantee the yield of a PV system. Furthermore, where feed-in limits are imposed, Fronius inverters can provide dynamic feed-in control with self-consumption taken into account. Just connect the meter and set the feed-in limit!
Arc Fault Circuit Interruption Integrated
The Fronius Arc Fault Circuit Interruption (AFCI) makes each inverter NEC 2011 compliant and maintains some of the most civilized, integrated technology available today. Ensuring the utmost safety, AFCI shuts down the inverter in the event of an arc fault.