Implementing Arc Detection in Solar Applications: Achieving Compliance with the new UL 1699B Standard
With increasing interest and demand for renewable energy sources, the market has seen a surge in the deployment of solar photovoltaic systems that convert sunlight to electricity. While new technological innovations like micro-inverters promise to change the solar landscape, the majority of installations today utilize long runs of high-voltage DC power that have raised concerns over safety issues relating to power arcs. This has led to the drafting of the UL 1699B standard that requires the use of arc detection in high-voltage systems to increase personal safety, protect equipment, and prevent catastrophic damage. While this paper focuses on implementing arc detection in solar applications, the technology applies to other electrical applications where high voltages are involved, such as electric and hybrid vehicles.