New string inverter for large PV roofs and ground-mounted solar parks

11/6/19, 8:03 AM -

KACO new energy’s blueplanet string inverters come with outputs between 87 and 150 kilowatts and are suitable for large roof installations and solar parks.

New string inverter for large PV roofs and ground-mounted solar parks
Three blueplanet 125 TL3s installed as part of a solar park in Tatvan, Turkey.

The blueplanet 87.0 TL3 and blueplanet 92.0 TL3 are suitable for solar power plants on commercial and industrial roofs. Since 1,500 volt technology is an emerging trend in the solar roof sector, both inverters are also suitable for solar modules with 1,000 volts. The blueplanet 92.0 TL3 features a nominal AC voltage of 400 volts: It can therefore be connected to a low-voltage distribution system without a transformer.

Three further variants of the blueplanet with 110, 137 and 150 kilowatts of output are available to planners and builders of large, utility-scale solar power plants. These inverters are based on the technology of the blueplanet 125 TL3 that KACO new energy had introduced at the end of 2018. The advantages are mainly due to novel semiconductor components made of silicon carbide. This material has more favourable thermal properties than silicon: Power derating at high ambient temperatures only begins just above 50 degrees Celsius.

Almost two kilowatts per kilogram

The lower heat generation of silicon carbide means that a smaller heat sink is required. Thanks to material savings such as these, the inverters have a weight of less than 80 kilograms which makes them comparatively light. The blueplanet 150 TL3 in particular has a power density of almost two kilowatts per kilogram.

With the exception of the blueplanet 110 TL3 which is intended solely for the US market, the new inverters are approved for a wide range of PV markets worldwide. With a view to North America, all inverters comply with protection class NEMA 4X and thus meet the highest requirements for outdoor installation.

KACO new energy was acquired by Siemens earlier this year. (mfo)