A solar photovoltaic system (solar power) is made up of a number of key elements:
- photovoltaic array (solar panel)
- battery charger
- bank of batteries
- inverter to convert DC voltage to AC voltage.
Panels may be protected by a structural lightning protection system, the metallic supports of the arrays should be connected to earth and the heart of the system, the inverter, requires to be protected by Surge Protection Devices.
The inverter should be protected on both the DC side and the AC side, additionally, if the PV arrays are over 10m away from the inverter, an SPD must be installed at the junction box that is local to that PV array.
The system should comply with HD 60364 covering the installation of solar photovoltaic systems, CLC/TS 50539-12 SPD’s for PV application, as well as the BS:EN 62305 series for Lightning Protection.