Quick Answer
When choosing an air terminal height for a solar-powered system, consider the height required to safely dissipate lightning strikes while ensuring a clear path for the strike to follow, typically between 3 to 10 meters above the highest point of the solar array or structure.
System Vulnerability and Strike Zone
The air terminal height is a critical component of a solar lightning protection system. Its primary function is to attract lightning strikes and direct them harmlessly into the ground. To determine the required height, consider the distance between the highest point of the solar array or structure and the surrounding terrain. A general rule of thumb is to set the air terminal height at 3 to 5 meters above the highest point for smaller systems, and 5 to 10 meters for larger or more complex systems.
Strike Zone Calculations
When calculating the strike zone, consider the following factors: the height of the solar array or structure, the distance to nearby objects, and the type of soil or terrain. A safe strike zone should be at least 6 meters wide and 3 meters deep to ensure that the strike is directed harmlessly into the ground. To determine the required strike zone dimensions, use the following formula: strike zone width (m) = 0.5 * structure height (m) + 3 m.
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