String inverter Voltwerk VS series and accessories
Developed for highest efficiency and maximum service life: The innovative Voltwerk VS series. The single-phase inverters are available in the performance levels 3, 4 and 5 kW and can reach peak efficiency factors of 97.7 %.
The new three-phase inverters are available in the performance levels 8, 11 and 15 kW and can reach peak efficiency factors of 98.0 % thanks to the innovative patented VTL topology. Innovative accessories like the service and commissioning tool Inverter Setup complete the string inverter portfolio.
VS 3, 4, 5 –
Single-phase string inverter 3, 4 and 5 kW
With the Voltwerk VS series it is possible for the first time ever to realise PV systems of up to 5 kW with only one string. This reduces installation expenditure and costs as well as cable losses, which results in higher efficiency of the plant.
VS 8, 11, 15 –
Three-phase string inverter 8, 11 and 15 kW
Due to the wide input voltage range of the VS series, modules can be flexibly wired. The high input voltage (UDC = up to 1000 V) permits maximum string lengths for low string losses and cost-effective photovoltaic module wiring.
The exceptionally fast and precise MPP tracking guarantees that there is no loss of output in case of irradiation changes.
DC disconnect –
VSC 25/900
The DC disconnect VSC is compatible with all inverters of the Voltwerk VS series. Thanks to the high IP 65 protection type it is possible to install the unit safely outside. In case of a disturbance, the inverter can be exchanged quickly and easily because no free-hanging DC power lines must be clamped.




