by design

Avoid the risk of elec­tric shocks dur­ing instal­la­tion and avert any dam­age due to over­cur­rent: with no high volt­ages and self-lim­it­ing fea­tures, our AC sys­tem is safe by design. An auto­mat­ic shut­down func­tion pro­tects the build­ing in case of an exter­nal emergency.

Safe handling at all times

No more han­dling of dan­ger­ous DC high volt­ages! Dur­ing the instal­la­tion of a Solar­na­tive PV plant, all AC cabling is com­plete­ly volt­age free, and the DC volt­age is lim­it­ed to the uncrit­i­cal poten­tial of a sin­gle PV mod­ule, i.e. ~40 V. The cable han­dling does not require any spe­cif­ic safe­ty pre­cau­tions, and the trans­former-based topol­o­gy of the Solar­na­tive Pow­er­Stick micro-invert­er leads to a fail-safe gal­van­ic iso­la­tion. As long as there is no con­nec­tion to the main grid, the sys­tem is switched off.

Compliant with rapid-shutdown regulations

While string-invert­er based PV sys­tems can­not be switched off, this func­tion is cru­cial in the event of a fire to allow the use of water in fire-fight­ing. There­fore, the Solar­na­tive micro-invert­ers auto­mat­i­cal­ly switch off, as soon as the PV plant is dis­con­nect­ed from the grid. More­over, NS-pro­tec­tion is includ­ed in each inverter.

The Solar­na­tive sys­tem is com­pli­ant with NEC 2020 sec­tion 690.12 Rapid Shut­down Reg­u­la­tion and Ger­man NS-pro­tec­tion require­ments accord­ing to VDE-AR‑N 4105:2018–11.

Self-limiting system protection

Our micro-invert­ers are self-lim­it­ing. Each invert­er mea­sures the string cur­rent and if it is too high, i.e., above the max­i­mum string cur­rent of 20 A, the invert­er sim­ply reduces its pow­er accord­ing­ly. Thus, there is nev­er any safe­ty risk or risk of dam­ag­ing the sys­tem, even when too many mod­ules were added to a string.

This self-lim­it­ing func­tion­al­i­ty can also help boost the ener­gy yield of a PV plant. It allows installing a high­er peak wattage, because dur­ing max­i­mum inso­la­tion, the over­cur­rent will be lim­it­ed by the sys­tem, while the pow­er out­put is increased under low­er light­ing conditions.