Inverters convert DC electricity to useable AC. They also perform other important tasks, including making sure the power source is running at its most efficient, keeping the generators in sync with the grid and protecting both the generating equipment and the mains grid. Correct sizing of the inverters is essential for the healthy, efficient running of your PV system, and SEI's range of products ensures that whatever your project, our designers can choose a product that will optimise your system's output.

As well as supplying inverters for installation projects, SEI can also supply inverters directly, either as a simple supply item or in the form of a pre-designed kit. Additionally, the rapid cycling of the capcitors during normal use means that inverters are the component that requires most maintenance: SEI can arrange for maintenance or replacement of faulty inverters to get your system running smoothly again. Please contact us if you would like more information on supply or maintenance projects.

Our standard inverter product range includes the following:

IG Series - Single-phase 1.3-6.7kWp 230V fan-cooled inverters (datasheet)
IG Central Series - Three-phase 23-52 kWp 3NPE~400V banked inverter units (datasheet)

SunnyBoy series - 0.7-6.0 kWp 230V inverters (sample datasheet)
SunnyBoy Mini Central and Central series - Three-phase 3NPE~400V inverter towers (datasheets available on request)

SMA are the largest manufacturer of grid-connected PV inverters in Europe, and they have a versatile product range to cater for all sizes of system from extremely small (sub-kilowatt) to large (megawatt) projects.