The Fronius Symo 3.7-3-M WLAN/LAN/SERVER/WEB inverter is a three-phase, transformerless, grid-connected inverter.
Characteristics of the FRONIUS Symo 3.7-3-M 3.7kW Grid Connection Inverter
The FRONIUS Symo 3.7-3-M 3.7kW Grid-Connection Inverter is a three-phase, transformer-free grid-connected inverter.
Grid connection inverters that have the “Light” designation are those that do not have the WLAN communication module installed to be able to view the inverter data over the Internet, those inverters that do not have the “Light” designation do. Incorporated.
Those grid connection inverters with the designation “S” incorporate only one MPP, while Symo grid connection inverters that incorporate the designation “M” incorporate 2 MPP.
Applications and features of the FRONIUS Symo 3.7-3-M 3.7kW Grid Connection Inverter:
The FRONIUS Symo 3.7-3-M 3.7kW Grid Connection Inverter is a three-phase grid connection inverter. The S variants incorporate an MPPT or maximum power point trackers, while the M carry 2 MPPT. It is ideal for small power self-consumption installations.
Thanks to its flexible design, the Symo model is perfect for installations on irregular surfaces and for roofs with different orientations.
The S and M models have a standard internet interface via Wlan or Ethernet and easy integration with components from other manufacturers, including datamanager and free connection to the solarweb portal. The light models lack communication interfaces, but they are prepared in case they wanted to be added in the future.
It has a Meter interface that allows dynamic power management and consumption display.
The FRONIUS Symo 3.7-3-M 3.7kW Grid Connection Inverter is an inverter that allows us to interconnect with the electrical grid without the need for batteries, which is why this type of installation is economical and very profitable in the long term, given its low cost from a simple installation and with few electronic devices that make the system more expensive.
For a grid connection installation to work correctly, we will need a group of solar panels, previously calculated to suit the needs of each case, and a grid connection inverter, which will allow us to transform energy from the solar panels to be able to make use of it
Fronius inverters have a zero grid injection system, this means that in the event that the solar installation is producing more energy than the home or industrial building is consuming, the zero injection system will allow us to reduce at will the power of the inverter only in the event that there is an energy surplus.
In short, the functionality of zero injection systems is to reduce the power of the inverter when the energy produced is greater than the energy consumed, thus preventing it from being discharged into the general electrical network.
Data Sheet
MODELS
SYMO 3.0-3-M
SYMO 3.7-3-M
SYMO 4.5-3-M
DATA INPUT
Number of MPP followers
2
Max input current (Idc max. 1 / Idc max. 21))
16 A / 16 A
Maximum short-circuit current of MPP1 / MPP2 1) (Isc pv)**
31 A / 31 A
DC input voltage range (Udc min. – Udc max.)
150 – 1000 V
Commissioning voltage (start Udc)
200 V
MPP voltage range
150 – 800 V
Number of DC inputs
2+2
Max PV generator output (Pdc max.)
6,0 kWpico
7,4 kWpico
9,0 kWpico
OUTPUT DATA
SYMO 3.0-3-M
SYMO 3.7-3-M
SYMO 4.5-3-M
Rated AC power (Pac,r)
3.000W
3.700W
4.500W
Maximum power output
3.000 VA
3.700 VA
4.500VA
AC output current (Iac nom.)
4.3A
5.3A
6.5A
Grid coupling (voltage range)
3~NPE 400 V / 230 V o 3~NPE 380 V / 220 V (+20 % / -30 %)
Frequency (frequency range)
50 Hz / 60 Hz (45 – 65 Hz)
Nonlinear distortion coefficient
< 3 %
Power factor (cos φac,r
0,8 - 1 ind. / cap
GENERAL DATA
SYMO 3.0-3-M
SYMO 3.7-3-M
SYMO 4.5-3-M
Dimensions (height x width x depth)
645 x 431 x 204 mm
Weight
19,9
Protection type
IP65
Protection class
1
Overvoltage category (DC / AC) 2)
2/3
nocturnal consumption
< 1 W
Investor concept
without transformer
Refrigeration
Regulated air cooling
Facility
Indoor and outdoor installation
Ambient temperature range
-25 - +60 °C
Permissible air humidity
0 - 100 %
Maximum altitude
2,000 m / 3,400 m (unrestricted / restricted voltage range)
DC connection technology
4 x DC+ and 4 x DC screw terminals 2.5 - 16mm2 3)
Main connection technology
5-pole AC screw terminals 2.5 - 16mm2 3)
Certificates and compliance
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 1), CEI 0-21 1) , NRS 097
Country of manufacture
Austria
PERFORMANCE
SYMO 3.0-3-M
SYMO 3.7-3-M
SYMO 4.5-3-M
Maximum performance
98,0 %
Performance European (ηEU)
96,5 %
96,9 %
97,2 %
MPP Fitting Performance
> 99,9 %
SAFETY EQUIPMENT
SYMO 3.0-3-M
SYMO 3.7-3-M
SYMO 4.5-3-M
DC insulation measurement
YES
Overload behavior
Duty point displacement, power limitation
DC disconnector
YES
Reverse polarity protection
YES
INTERFACES
SYMO 3.0-3-M
SYMO 3.7-3-M
SYMO 4.5-3-M
WLAN/Ethernet LAN
Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON)
6 inputs and 4 digital inputs/outputs
Wave Control Receiver Interface
USB (A connector) 1)
Datalogging, inverter update via USB
2 RJ 45 connectors (RS422) 1)
Fronius SolarNet
Warning output 1)
Energy management (potential free relay output)
Datalogger and Webserver
Including
External input 1)
S0-Meter / Input interface for overvoltage protection
RS485
Modbus RTU SunSpec or meter connection
1) También disponible en la versión light
