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.

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.