Maximum flexibility for the applications of tomorrow.
Boasting power categories ranging from 3.0 to 20.0 kW, the transformerless Fronius Symo is the three-phase inverter for systems of every size. The high system voltage, wide input voltage range and two MPP trackers ensure maximum flexibility in system design. The standard interface to the internet via WLAN or Ethernet and the ease of integration of third-party components make the Fronius Symo one of the most communicative inverters on the market.
Technology:
Unique Fronius PC board replacement process
The foundation of the unique PC board replacement process is laid as we develop our inverters, as PC boards can only be replaced if the device has been designed accordingly. This enables our Fronius Service Partners to provide the fastest inverter servicing on the market.
SnapINverter mounting system
The special feature in the design of our devices is that the connection compartment is separate from the power stage set compartment. They are installed separately. The connection area and all its cabling is fitted to the wall first. The power stage set compartment is fitted afterwards. The innovative SnapINverter mounting system makes installation and servicing extremely user-friendly. The inverter is simply placed in the wall bracket and then secured. It is not necessary to remove the entire inverter for servicing, just the power stage set compartment. All the cabling, settings and configurations remain in place.
SuperFlex Design
The Fronius SuperFlex Design combines all the system design requirements into a single inverter form. Two MPP trackers combined with a high system voltage and wide input voltage range guarantee maximum flexibility. Every DC input, and therefore every MPP tracker, is able to accommodate the entire nominal output of the inverter. The result: an inverter for every application. Thanks to the SuperFlex Design, a single inverter can cope with any challenge – including different roof orientations, shading of one or two strings, or the use of residual modules.
Dynamic Peak Manager
The Dynamic Peak Manager is a new MPP tracking algorithm that dynamically adapts its behaviour when searching for the optimal operating point. The special feature is that the Dynamic Peak Manager automatically checks the entire characteristic curve on a regular basis and finds the global Maximum Power Point (GMPP), even in partial shade.
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.
INPUT DATA | Fronius Symo 20.0-3-M Light |
---|---|
Max. input current (Idc max1 / Idc max2) |
33.0 A / 27.0 A |
Max. usable input current total (Idc max1 + Idc max2) |
51.0 A |
Max.array short circuit current (MPP1 / MPP2) | 49.5 A / 40.5 A |
Min. input voltage (Udc min) | 200 V |
Feed-in start voltage (Udc start) | 200 V |
Nominal input voltage (Udc,r) | 600 V |
Max. input voltage (Udc max) |
1,000 V |
MPP voltage range at Pnom (Umpp min - Umpp max) |
420 - 800 V |
Usable MPP voltage range | 200 - 800 V |
Number of MPP trackers | 2 |
Number of DC connections | 3 + 3 |
Max. PV generator output (Pdc max) | 30.0 kWpeak |
OUTPUT DATA | |
AC nominal output (Pac,r) | 20,000 W |
Max. output power | 20,000 VA |
AC output current (Iac nom) | 28.9 A |
Grid connection (voltage range) | 3~NPE 400 V / 230 V or 3~NPE 380 V / 220 V (+20 % / -30 %) |
Frequency (frequency range) | 50 Hz / 60 Hz (45 - 65 Hz) |
Total harmonic distortion | 1.3 % |
Power factor (cos φac,r) | 0 - 1 ind. / cap. |
GENERAL DATA | |
Dimensions (height x width x depth) |
725 x 510 x 225 mm |
Weight | 43.4 kg |
Degree of protection | IP 66 |
Protection class | 1 |
Overvoltage category (DC / AC)1) | 2 / 3 |
Night time consumption | < 1 W |
Inverter design | Transformerless |
Cooling | Regulated air cooling |
Installation | Indoor and outdoor installation |
Ambient temperature range | -40°C to +60°C |
Permitted humidity | 0 % to 100 % |
Max. altitude | 2,000 m / 3,400 m (unrestricted / restricted voltage range) |
DC connection technology | 6x DC+ and 6x DC- screw terminals 2.5 mm² - 16 mm² |
AC connection technology | 5-pin AC screw terminals 2.5 mm² - 16 mm² |
Certificates and compliance with standards | ÖVE / ÖNORM E 8001-4-712, DIN V VDE 0126-1-1/A1, VDE AR N 4105, IEC 62109-1/-2, IEC 62116, IEC 61727, AS 3100, AS 4777-2, AS 4777-3, CER 06-190, G83/2, UNE 206007-1, SI 4777, CEI 0-16, CEI 0-21, NRS 097 |
EFFICIENCY | |
Max. efficiency | 98.1 % |
European efficiency (ηEU) | 97.9 % |
η at 5 % Pac,r2) | 91.9 / 95.2 / 93.0 % |
η at 10 % Pac,r2) | 94.8 / 96.9 / 95.8 % |
η at 20 % Pac,r2) | 96.3 / 97.8 / 97.1 % |
η at 25 % Pac,r2) | 96.7 / 97.9 / 97.4 % |
η at 30 % Pac,r2) | 96.8 / 98.0 / 97.6 % |
η at 50 % Pac,r2) | 97.0 / 98.1 / 97.8 % |
η at 75 % Pac,r2) | 97.0 / 98.1 / 97.7 % |
η at 100 % Pac,r2) | 96.8 / 98.0 / 97.6 % |
MPP adaption efficiency | > 99.9 % |
PROTECTIVE DEVICES | |
DC insulation measurement | Yes |
Overload behaviour | Operating point shift, power limitation |
DC disconnector | Yes |
Reverse polarity protection | Yes |
INTERFACES | |
6 inputs and 4 digital in/out | Interface to ripple control receiver |
USB (type A socket)3) | Datalogging, inverter update via USB flash drive |
2 x RS422 (RJ45 socket)3) | Fronius Solar Net, Interface protocol |
Signalling Output3) | Energy management (floating relay output) |
Datalogger and Webserver | Included |
External Input3) | S0 meter connection / Evaluation of overvoltage protection |
RS485 | Modbus RTU SunSpec or meter connection |
1) Testing to IEC 62109-1. DIN rail for optional type 1 + 2 or type 2 surge protection device available.
2) And at Umpp min / Udc,r / Umpp max
Subject to modifications.