Led Lighting Spd Design Installation Guide Page 7 LED Lighting SPD Design & Installation Guide

2015 Littelfuse LED Lighting SPD Module Design and Installation Guide www.littelfuse.com LED Lighting Surge Protection Modules Design and Installation Guide Figure 5. This map of worldwide lightning frequency (courtesy of NASA Global Hydrology Resource Center) depicts the number of lightning flashes/km 2 /year for various regions. Incorporating a robust surge suppression circuit in an outdoor LED luminaire can eliminate damage caused by surge energy, enhancing reliability, minimizing maintenance, and extending the useful life of the lighting installation ( Figure 6 ). A surge protection subassembly that can suppress excessive surges to lower voltage levels is an optimal way to protect the LED luminaire investment. Figure 6. LED street light protection scheme. Regional Differences in Lightning Frequency (continued) 7

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