admin 
Summer has arrived, and thunderstorms occur frequently. How to implement lightning protection measures for solar street lights is a challenge for many manufacturers. In open areas, high mountains, and regions where thunderstorms commonly occur, lightning protection measures are particularly important.
The lightning protection work of solar street lights is different from that of ordinary street lights. The main difference lies in the fact that the response speed of LED components is faster and their voltage resistance capacity is lower. So, what aspects should we consider?
Solution One:
1. Grounding of solar street lights: This is crucial. Using the pole as a discharge medium is sufficient. The ground network should be determined based on the soil quality, with grounding resistance less than 10 ohms.
2. Protection against direct lightning strikes: A lightning rod can be made using the pole.
3. Circuit: Install a dedicated photovoltaic DC lightning arrester. The lightning arrester should be designed according to the power supply voltage. During thunderstorms, the circuit of LED street lights may experience a surge voltage or current due to static or electromagnetic induction, potentially damaging the LED street light equipment. Thus, it’s necessary to choose suitable lightning protection devices for the power supply line to avoid widespread damage to LED street lights in the same area.
Solution Two:
Lightning Protection Method One: Equal Potential Bonding
To completely eliminate the destructive potential difference caused by lightning on outdoor street lights, power lines, signal lines, metal pipelines, etc. should be connected through overvoltage protectors for equal potential bonding. The interfaces of each internal protection zone of the street light power supply should also be locally interconnected for equal potential, and these local bonding points need to be interconnected and connected to the main equal potential point.
Lightning Protection Method Two: Combination of External and Internal Lightning Protection
Street lights generally have two systems: an external lightning protection system and an internal lightning protection system, which complement each other. The internal lightning protection system must connect to the external lightning protection system or have overvoltage protectors in many components, such as the housing, cables entering and exiting the protection zone, and metal pipelines, all requiring equal potential bonding. Typically, the exterior of LED street lights is made of conductive materials, which acts like a lightning rod. Therefore, the design of the street light power supply must include a down conductor and grounding network, making up the external lightning protection system. Such a system helps avoid fire hazards and personal safety incidents caused by direct lightning strikes. The internal lightning protection system refers to protecting the equipment inside the street light through grounding and voltage protection, preventing induced lightning and other forms of overvoltage from damaging the power supply, a protection not guaranteed by the external lightning protection system.
Method Three: High-quality Protective Devices
– Lightning Protection Modules and Overvoltage Protection Modules
The role of the street light lightning arrester is to connect the protected system to the equal potential system within a short time (nanosecond level), equalizing the potential at the equipment’s ports. It releases the massive pulse energy generated by a lightning strike through a short pathway into the ground, thereby reducing the potential difference at each interface of the equipment, providing effective protection.
Method Four: Establish Lightning Protection Zones
In addition to the power supply lightning protection system, many LED street lights also feature communication devices used for controlling the lights’ switches and brightness. These devices and the power supply need to be placed within a lightning protection zone, where they are directly shielded by the housing since the electromagnetic field in these areas is significantly weaker. The aforementioned lightning protection solutions for street lights have been proven through numerous practical applications and scientifically designed and rigorously tested to ensure that LED street light systems are protected from lightning damage while eliminating common mode and differential mode interference on street light power equipment.
To learn more about solar street light price lists, please consult us.
We specialize in the research, development, production, and sale of solar and LED outdoor lighting. With years of production experience and advanced equipment, we guarantee quality and offer reasonable prices. For inquiries regarding LED solar street light prices, please contact our customer service.
