SPD is needed for lightning surge protection of outdoor LED lamps, and mov alone is not enough. The way to protect outdoor LED lighting from induced surge impact damage is to block the transient interference of high voltage / current into the lighting fixture. Therefore, a surge protective device (SPD) can be used in outdoor LED lighting applications to suppress the surge energy and minimize the surge impact on lighting equipment. A considerable threat to outdoor LED lighting is the transient surge in AC power lines, especially lightning surge, which may cause damage to the lamps. Today, any LED lamp contains DC-DC power converter, LED driver, heat sink for thermal control and optical device for optimizing light quality. Lightning surge will cause faults to the internal components or circuits of LED lamps directly connected to AC input power supply (such as 120 / 220 VAC mains power supply), resulting in the damage of LED lamps due to short circuit and overload.In addition, the lightning surge or load switch transient generated outside the bulb can cause voltage spike or ring wave, which will cause pressure to the components and eventually lead to damage, so that the bulb can be scrapped. Since the value orientation of LED bulb is not only to reduce energy consumption, but also to have a longer service life, it is very important to consider transient voltage protection in eliminating field faults caused by electrical environment.Consumers and industrial users are looking for more energy-saving lighting solutions to accelerate the demand for LED lighting. The development of LED lighting mechanisms has also been driven by government actions aimed at curbing the continued use of incandescent lamps. For the above reasons, the high adoption rate of LED lighting is absolutely a global phenomenon. Countries with developed economies have developed sound plans and programs to phase out traditional incandescent lighting. This should not come as a surprise, as lighting accounts for about 25% of global energy consumption.
