The use of solar street lights is continuing to increase throughout the world. More and more people as well as corporations have realized the importance of the lights and ensuring that they purchase the latest lights. The best thing about solar street lights is the fact that they are easy to install, flexible, durable and stable.
A typical solar street light consists of an inverter, solar panel, led street light, junction box, control system and the battery. Most of the devices are well-integrated in the limited space. Solar street lights can be prone to natural disasters such as lightning which is why it is important to effectively protect them.
This guide will help you understand how it is possible to protect solar street lights from lightning. The lights are an expensive investment and that is why it is important to protect them. In order for you to ensure protection as per the requirements of IEC62305 for the solar DC system, the below protection zones need to be considered and installed accordingly.
- Surge Protection Zone
- Relative SPD Test
- Voltage Protection Level
- Open Circuit Voltage
- Harmonic Wave Interference
Solution 1: Ensure that the Lightning Strike is Directed
The majority of solar street lights operate in harsh locations which makes them susceptible to damages such as from the weather. If the solar street light experiences lightning damage, it would be attributed to have an inadequate direct strike lightning protection in place.
It could be due to insufficient grounding, bonding or not having a proper transient protection. In order to prevent the solar street light from being damaged by lightning, it is recommended to use a professional grounding or lightning rod.
Single Needle Lightning Rod
A single needle lighting rod can also be used for lightning protection as it will receive lightning and lead it down to the earth. It will help ensure that the antenna tower is protected and does not experience electrification. The lighting would be released into the earth by the rod. The low impedance of the metal inner conductor would make it possible to do so. While, the attenuator will reduce the direct lightning shock, upon immediate contact with it, and will prevent any damage.
- Easy to Install
- Good Conductive Performance
- Corrosion Resistant
Solution 2: Induction Protection
Besides, the direct lightning protection, high-energy over-voltage and over-current transients that induce indirect lightning strikes cause great damage if the solar street light isn’t protected. Use a power surge protector box to provide protection for the supply lines.
The power surge protector will react with low impedance when the power supply transmission line is invaded. It will limit the overvoltage as well which is caused by the lightning,
Lightning is common and that is why it is important to protect the solar street lights beforehand so as to ensure that there are no damages or that the damages remain minimal. Use both of the solutions to provide maximum protection.