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Summer is a frequent season of thunderstorms, for outdoor solar street lights must do a good job of lightning protection measures, so as not to be caused by lightning attacks.
In thunderstorm weather, the solar street light circuit will occur from electrostatic induction or electromagnetic induction a spike voltage or spike current through, this moment of spike current or voltage will affect and damage the solar street light equipment, so the solar street light lightning protection work must be done in advance, can effectively avoid the solar street light in the case of lightning caused unnecessary damage.
The lightning protection work of solar smart street lights is different from that of ordinary street lights, mainly because the response speed of solar street lights is much faster than that of ordinary street lights, and the voltage capacity will naturally be smaller than that of ordinary street lights. In open areas, alpine areas and areas where thunderstorms often occur, lightning protection methods are particularly important, and the lightning protection design of solar street lights can take preventive measures from three aspects.
1, anti-direct lightning: In order to prevent lightning from directly hitting the rod body of the solar street lamp, it is necessary to make the rod body into a flash, so that the lightning can be directly directed to itself when lightning strikes, and to undertake direct lightning discharge.
2, grounding: This is the most common and most effective method, grounding is to prevent electric shock or protect the safety of the equipment and the rod body itself as the discharge body, the use of the earth as the current circuit grounding wire, the general ground network should be determined according to the local geological soil, the grounding resistance should be less than 10 ohms, in addition, the solar street light circuit system should also be grounded in the appropriate location.
3, circuit: installation of special solar lightning protection device. The lightning protection device is mainly designed according to the power supply voltage of the solar street lamp. During lightning weather, the circuit of the solar street lamp will produce a spike voltage or spike current through the electrostatic induction or electromagnetic induction, affecting the LED solar street lamp equipment. The special lightning protection device for solar street lights can protect the surge voltage of the power line, and can avoid the phenomenon of lightning damage to a large area of solar street lights in the same area.