Fronius IG
Grid-tied Inverters for
Photovoltaic Systems
Welcome to Fronius International
For over 65 years, Fronius has concentrated on technologies for converting electrical energy.
The company is divided into three divisions. In addition to solar technology, Fronius is a leading
innovator in welding technology and battery charging systems. Fronius is an international
enterprise with subsidiaries in many countries and are also supported by numerous sales partners
and representatives, giving us a presence in over 60 countries worldwide.
Research and development is the heart of our company in all three Fronius divisions. These are
young and dynamic teams who are continually searching for innovative technological approaches
and revolutionary developments to turn great ideas into efficient tools.
High Frequency (HF) Technology
Maximum Output in Minimum Space. The power circuit
of all Fronius IG inverters is based on the High-Frequency
concept. The advantages are obvious: it makes the inverter
extremely compact and very powerful. Using an innovative
Phase-Shift process the Fronius IG minimizes switching
losses and is able to generate ultra high conversion
efficiencies of 95.2 %!
As a result of HF technology, the Fronius IG weighs in at
26 lbs, half the weight of the competition! Our extensive
experience with HF-Transformers from the welding sector
makes the Fronius IG one of the most efficient and reliable
Small transformer – high power. The transformer is extremely
small and able to transmit high power due to the high-frequency
technology. Furthermore, the phase-shift process minimises
switching losses thus ensuring high yields.
PV inverters of all time.
MIX™ Concept: More Power
due to two Hearts
Inverter X-Change concept, is a further development of the
master-slave process (MS). The MS process was developed
in order to obtain significantly better Power Harvest under
Efficiency
Increase yield, reduce operating hours. MIX™, the Master
Inverter without MIX TM concept
Fronius IG 4000/ 5100/ 4500-LV
with MIX TM concept
Extra yield
part-load. Part-load conditions occur with lower irradiance,
such as sunrise or sunset, dusk, heavy cloud, etc. The
problem for single stage inverters is that efficiency drops
significantly under part-load.
The solution in the MIX™ concept is that two small power
modules share the work. In part-load the “master” works
Output Power in %
alone. In full-load the irradiance increases and the “slave” is
Increase in yield. The MIX™ concept turns part-load into full-load.
Effi ciency rises and thus signifi cantly optimises yields in the partload range.
switched on. However, the MIX™ concept offers even more
advantages as the two power modules are used equally. The
intelligent control system chooses a different master each
day. This reduces the operating hours by up to 30 %.
cristallin
Maximum Power Point Tracking (MPPT) accuracy of 99.9 %
MPP
Current in A
Fronius IG Module-Manager™
amorph
Regardless of which PV modules you use; monocrystalline,
poly or thin film, the intelligent Fronius IG Module-Manager
MPP
software quickly and efficiently finds the maximum power
point (MPP). The software can react accurately to changes in
sunlight levels and create the greatest possible energy yield
from your array. For this reason, the Fronius IG family can
always extract the maximum from all module types.
Voltage in V
The maximum. Fronius’ intelligent Module-Manager always fi nds
the MPP. The result is always maximum yield.
Features and Benefits
Integrated DC/AC Disconnects. Each inverter comes
with built-in DC and AC disconnects and in many cases
eliminates the need for external disconnects reducing
installation time and total system costs. With its
lightweight and compact design, the Fronius IG can be
easily lifted on or off the installation bracket. The standard
knockouts and terminal strip saves time and expense
when making electrical connections.
Graphic Display and User Interface. Owning a PV
system is great. Knowing exactly what it is doing is even
better. A large, bright, easy to use LCD display comes
standard with every Fronius IG inverter. You can view over
20 critical system parameters pertaining to the inverter
and solar system operation. If a system fault has occurred,
the display shows the reason for the problem, making it
easy for the user or installer to troubleshoot and repair.
Reliable-Rugged-Built to Last. Fronius IG inverters
are built in an ISO 9001 facility. As a world leading
manufacturer of HF welding equipment, Fronius builds
products that can withstand the test of time in harsh
environments with heavy use. That know-how is built
into each and every Fronius IG inverter. Built to last by a
company that has been around long enough to know.
Plug and Play Digital Technology. Just like a Personal
Computer, Fronius IG inverters come with 3 expansion
slots that allow you to add features, such as external
sensors and remote displays.
Fronius DATCOM: Data Communication Features
for your PV System. Remote data communications and
data logging features can easily be added to transform
your Fronius IG inverter into a sophisticated data
Photo: Stromaufwärts
acquisition system and weather monitoring station. For
complete specifications and configurations please see the
Fronius DATCOM Specification Sheet.
Controlling Energy: Fronius IG
The Fronius IG inverter has gained broad market acceptance due
to its advanced High Frequency technology which offers high
efficiency, precision MPP-tracking, and active cooling, all of which
results in superior energy production from photovoltaic systems.
High Efficiency
+ High Reliability
+ HF Technology
+ MPPT-Efficiency
+ Active Cooling
All manufacturing, assembly and testing of the Fronius IG inverters
occurs at Fronius’ ISO 9001 factory. The result - superior quality
control, high product availability, and quick response time.
= More energy harvested from
your solar power system!
Fronius IG Technical Data
INPUT DATA
2000
3000
2500-LV
4000
5100
4500-LV
1.5 - 2.4 kWp
2.1 - 3.3 kWp
1.8 - 2.7 kWp
3.0 - 4.8 kWp
4.1 - 6.1 kWp
3.5 - 5.3 kWp
33.2 A
29.3 A
Fronius IG
Recommended PV-power
Max. input voltage (at 1000 W/m² 14°F (-10°C) in open circuit operation)
500 V
MPPT voltage range
150 ... 450 V
Max. usable input current
13.6 A
18.0 A
16.9 A
Admissible conductor size (DC)
26.1 A
No. 14 - 4 AWG
No. of DC input terminals
3 (screw terminals)
No. of MPP trackers
1
2000
3000
2500-LV
4000
5100
4500-LV
2000 W
2700 W
2350 W
4000 W
5100 W
4500 W
Fronius IG
Nominal AC output voltage
Operating AC voltage range default (-12 / +10 %)
208 V
240 V
208 V
212 - 264 V
183 - 229 V
212 - 264 V
183 - 229 V
8.3 A
11.3 A
11.3 A
16.7 A
Max. continuous utility backfeed current
Nominal output frequency
60 Hz
Operating frequency range
59.3 - 60.5 Hz
Total harmonic distortion (THD)
Number of phases
4500-LV
94.5 %
93.5 %
1
GENERAL DATA
No. 14 - 6 AWG
Fronius IG
2000
Max. effi ciency
3000
2500-LV
95.2 %
CEC effi ciency
93.5 %
4000
94.4 %
94.0 %
95.2 %
93.0 %
94.0 %
Consumption in standby (night)
94.4 %
< 0.15 W
Consumption during operation
7W
12 W
Enclosure type
NEMA 3R
Unit dimensions (W x H x D)
16.5 x 18.5 x 8.7 inch (418 x 470 x 223 mm)
Weight
16.5 x 28.3 x 8.7 inch (418 x 720 x 223 mm)
26 lbs. (11.8 kg)
Admissible ambient operating temperature
41.8 lbs. (19 kg)
-13° ... +122°F (-25° ... +50°C)
Cooling
Controlled forced ventilation, variable speed fan
Disconnects
Standard Code Compliant DC & AC disconnects
UL 1741-2005, IEEE 1547-2003, IEEE 1547.1, ANSI/IEEE C62.41, FCC Part 15 B, NEC Article 690, C22.2 No. 107.1-01 (September 2001),
California Solar Initiative - Program Handbook - Appendix C: Inverter Integral 5 % Meter Performance Specifi cation
PROTECTION DEVICES
Ground fault protection
Fronius IG
2000
3000
2500-LV
4000
5100
4500-LV
Internal GFDI (Ground Fault Detector/Interruptor); in accordance with UL 1741-2010 and NEC Art. 690
DC reverse polarity protection
Over temperature
5100
1 (at nominal output power)
Admissible conductor size (AC)
Islanding protection
21.6 A
<5%
Power factor (cos phi)
Compliance
21.3 A
0A
Internal diode
Internal; in accordance with UL 1741-2005, IEEE 1547-2003 and NEC
Output power derating / active cooling
Fronius USA, LLC
10421 Citation Drive, Suite 1100
Brighton, MI 48116
E-Mail: pv-us@fronius.com
www.fronius-usa.com
YOUR FRONIUS DISTRIBUTOR
SOLIGENT
800-967-6917
www.soligent.net
Text and illustrations are technically correct at the time of going to print. The right to make modifications is reserved.
This document may not be copied or reproduced in any form, not even in part, without prior written consent of Fronius International GmbH.
Max. continuous output current
240 V
40,0006,2302 v02 2011 as09
OUTPUT DATA
Maximum continuous output power @ 40°C