Lightning rod working principle

Introduction: Lightning rods, also known as lightning protection needles, are devices used to protect buildings, tall trees, etc. from lightning strikes. A lightning receptor is installed on the top of the object to be protected, and the wire is connected to the ground leakage network buried in the ground. The lightning rod specification must meet the GB standard. The lightning rod height specification required by each lightning protection category is different.

If a building is equipped with a lightning receptor but it is not grounded or if the grounding effect is not good, it will cause more damage to the building or the people involved in the lightning connection, and it will be even worse than a building without a lightning receptor. Safety. When the thundercloud discharges close to the ground it distorts the ground electric field. At the top of the lightning rod, a local electric field concentration space is formed to influence the development direction of the lightning pilot discharge, guide the lightning discharge to the lightning arrester, and then the lightning current is led to the earth through the ground down conductor and the grounding device, thereby protecting the protected object from the lightning strike. . At present, the technology of lightning rods is more and more advanced, such as lightning rods that have early release point function, this kind of lightning rod has the function of early discharge compared with traditional lightning rods, and the advance discharge time is 66.33μs; it is fully active and has built-in high-end electric triggering devices. No external power supply is required. Only active activation will occur before lightning occurs. No radioactivity will not cause any damage or damage to the surrounding environment. Durable, maintenance-free, corrosion-resistant, and wind-resistant, it will not be rusted by thunder and lightning strikes.

Its structure mainly consists of the following parts: the central main needle: is fixed on the support rod and is connected with the earth by a down conductor to form a complete lightning path, which introduces the lightning current into the earth; the upper electrode: through the central master needle Form an advance lead; stainless steel housing: used to protect the electrical trigger device; electrical trigger device: used to process the collected electrical energy to convert the lower electrode, and to promote the formation of advanced lead discharge from the central master and the upper electrode; lower electrode: used to Collect energy generated by changes in the electric field.