The purpose of this Technical Note is to describe proper protection of SolarEdge products in the field from overvoltage surges caused by lightning strikes, grid overvoltage events and ground faults. Properly installed surge protection can reduce the likelihood of permanent damage. .
Merged North American and Rest-of-World versions Added SPD options for commercial inverters .
A surge protection device alone cannot protect electronic equipment from a direct lightning strike. External protection is required to attract the lightning and redirect it to the ground, while the SPD absorbs residual energy. External protection equipment. .
One of the common sources of voltage surge is lightning strikes. It is not necessary for lightning to strike the PV site to damage it; therefore, it is worthwhile to consider all the ways in which lightning can induce surge, including electrostatic and magnetic induction. .
Thunderclouds contain negative charges in their lower sections. These high negative charges can induce high positive charges within nearby cables, especially power lines and communication cables. Figure 3: Electrostatic induction - before discharge During. Surge protection devices (SPDs) play a crucial role in safeguarding PV systems from electrical surges that can damage critical components such as inverters, batteries, and controllers. [pdf]
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