Photovoltaic energy A tailor-made offering for protection and isolation of photovoltaic systems from ABBThe components of photovoltaic systems The effectiveness and quality of a system are measured by the effectiveness and quality of each single component. An essential factor in determining the success of a What is commonly called the BOS (Balance of System), photovoltaic system is the accurate selection of its i.e. protection, control and isolation of electromechanical components, with particular attention to modules and devices and cables, definitely plays a role in ensuring both inverters. It should be recalled that for a photovoltaic system an adequate protection of people and of the assets related to be considered as a good investment, it needs to continue to the system, and an adequate production of energy over to operate in good health for at least 20 years in bad the years. From an economic viewpoint, and even more in weather and hot sun. comparison with a common electric system, each single component of a photovoltaic system must be chosen above all according to the warranties given by the product and by its manufacturer, because every device must keep its operating features unchanged throughout the useful life of the system and of the related investment. 2