The Photovoltaic Installations to be connected to the mains supply take charge of transforming solar radiation into electrical energy and transmitting all of it to the electrical mains supply, so that it becomes a financial benefit for the user.
The fundamental part of a photovoltaic installation is the Photovoltaic Panel. This is responsible for transforming solar radiation into electrical energy. Said transformation is carried out directly in the photovoltaic cells, through a physical phenomenon called the photoelectric effect that enables electricity to be obtained just by exposing cells to solar radiation.
The inverter is the part that transforms the energy continually generated by the photovoltaic modules into an alternating current ready to be connected to mains supplies of 230 V and 50 Hz. The photovoltaic modules and inverters must have matching dimensions for their correct operation.
The energy generated by the panels is transported to the inverter through what is called the solar cable, a special cable for continual working in this type of installation and which has a double layer of PE (Polyethylene) insulation.
The energy supplied by the photovoltaic installation to the mains is calculated thanks to the specific exit meter for each electricity distributor.
As in all electrical installations, photovoltaic installations have a protection system, both to ensure supply to the mains (of a maximum and minimum frequency of 51 and 49 Hz and maximum and minimum voltage 1.1 Um and 0.85 Um respectively) with a general breaker switch, like those of proper differential and thermo-magnetic protection and necessary automatic cutouts.