For electrical engineers, contractors, installers, designers and other individuals whose jobs involve lightning protection systems and related equipment, understanding all the relevant standards can be a daunting task. To learn and apply the intricate requirements outlined in a given code or standard, we recommend referring to the specific document first. In this article, we will examine three of the most prominent U. We answer the following questions to direct you to the right one: Why does each standard and organization exist?
|Published (Last):||20 November 2010|
|PDF File Size:||8.89 Mb|
|ePub File Size:||11.75 Mb|
|Price:||Free* [*Free Regsitration Required]|
Many people think that this is mandatory; that there is no alternative. But who are you going to go after if you do install a UL96A system and pay to have it certified on a regular basis? You could attempt to go after the company that designed it, installed it, or did both. But they will tell you they followed the standard. What more do you want them to do? We often get calls from companies, such as power generation plants, chemical plants and data centers, that tell us they have issues with lightning.
They even have a UL Master Label plaque attached to some structures in the facility. A brief history and description follows. In , Dr. Benjamin Franklin experimented with lightning mitigation. He found that a sharp point dissipates charge fundamental of a charge transfer system or CTS.
He linked lightning to a charge and attempted to dissipate the charge in the clouds during a thunderstorm. He found that if the lightning rod was the preferred collection point of the lightning leader, he did discharge the entire static field uncontrollably, with thousands of amperes of current flowing through the conductor in sub-second durations. Because the Franklin Rods were physically attached to the structures, in many cases, the structure would actually burn or sustain damage.
Would you want sensitive instruments and control systems exposed to this kind of energy? Next Generation Lightning Protection The Franklin approach brings the severe lightning energy a percentile strike in the U. Lightning Eliminators and Consultants, Inc.
The Franklin Rod systems that have been in existence for over years create the problem. They attract lightning to an area when the lightning may have well terminated outside the desired safe zone. In our view, they create a potential problem where one might not have occurred. For over 40 years, LEC has been providing advanced industrial strength lightning protection systems worldwide.
The systems LEC designs, manufactures and applies do not provide the traditional Franklin Rod protection schemes. Rather, we take the view we should avoid the strike, not collect it. LEC does not attract the lightning. The DAS is engineered to the specific application or site.
The typical clients who choose the DAS system for their facility lightning protection are those that cannot tolerate any collection of lightning within the desired protection zone.
The operation of the protected facility is too critical or sensitive to take the chance that a strike will be collected such as a physically explosive environment or where downtime will be too costly. Others choose our approach because the initial downtime will cause an extended restart period for repair and system checks or processes that are interrupted by the initial lightning strike cannot be reset and will require disposal or waste that cannot be reused.
Another strong reason to choose DAS is personnel safety in an area that must be occupied during storm activity such as surveillance and security availability. You have choices in how you protect your assets.
Contact us to discuss what your options are.
How to Pick a Lightning Protection System
Part One focuses on the controversy and misunderstanding about standards in general and how the customer should be applying or not applying standards to solve their problems. Primarily what does or does not apply, or for that matter, what should apply when considering a lightning protection solution. I believe many people think that this is mandatory; that there is no alternative. But who are you going to go after if you do install a UL96A system and pay to have it certified on a regular basis? You could attempt to go after the company that designed it, installed it, or did both. But they will tell you they followed the standard. What more do you want them to do?