Type2 DC SPD are very safe, and their voltages include 100V, 200V, 300V, 600V, 1000V, 1200V, 1500V, which fully meet the requirements of IEC6164332 and cover most of the system requirements. Photovoltaic DC SPD are used according to the requirements of IEC61643-32, and are usually installed in lightning protection zone LPZ0-2 and subsequent zones.