Fronius IG Central Inverters

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The own solar powerstation

The Fronius IG central inverters are suitable for pv systems starting with an AC output power of 24 kW and work with a completely new system configuration. There is not only one power stack converting the electricity but also 9, 12 to 15 printed circuit boards that share the work, depending on the output class.

The reason for this is that it is well-known that the energy yield increases in part-load areas if smaller power stacks are operated at higher capacity. Therefore, every Fronius IG central inverter works with several smaller power stacks that switch on or off completely automatically depending on irradiance so that they can always deliver maximum power.

Technical Data

Equipment features

Technical Data

Fronius IG	300	400	500
Input Data
MPP voltage range	210 - 420 V	210 - 420 V	210 - 420 V
Max. input voltage (at 1000 W/m²; - 10° C)	530 V	530 V	530 V
Recommended PV plant output	24 - 31 kWp	32 - 42 kWp	40 - 52 kWp
Max. input current	123 A	164 A	205 A
Output Data
Nominal output	24 kW	32 kW	40 kW
Max. power output	24 kW	32 kW	40 kW
Max. efficiency	94,3 %	94,3 %	94,3 %
Euro efficiency	93,3 %	93,4 %	93,5 %
Mains voltage / frequency	3NPE~400 V / 50 Hz
Distortion factor	< 5 %
Power factor	1
Power consumption at night	9 W
General Data
Size l x w x h; IP 20 incl. socket (200 mm) up to edge of exhaust pipe	600 x 600 x 2557 mm
Size l x w x h; IP 43 incl. socket (200 mm)	1112,5 x 600 x 2444,5 mm
Weight	225 kg	254 kg	265 kg
Cooling	controlled forced-air cooling
Protection class (housing)	IP 20 (IP 43)
Ambient temperature range	- 20° C to 50° C
Permissible humidity	0 to 95 %
Protective Devices
DC insulation measurement	warning when Riso < 500 k Ohm
Behaviour on DC overload	displacement of operating point

Equipment features

Fronius LC-Display
HF-Transformer
Module-Manager
MIX-Concept

We recommend to use a Fronius String Control for monitoring the high number of module strings in a pv-system with Fronius IG Central inverters.

Glossary

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