The aim is to make this tool, which is essential for research, development, and certification work, even more reproducible for NF C 17-102 testing of our lightning rod prototypes. This modernization also brings greater operational efficiency by simultaneously and automatically multiplying the actions of a single operator, who can focus on the quality of the tests carried out in complete autonomy. We are very proud of these improvements, which were developed in-house and tailored to our specific needs.

It is the result of a long period of reflection and decades of experience in the testing laboratory.

Over the coming months, we will continue our efforts to modernize the LiRi LAB by focusing on other parts of our laboratory. This will enable us to open the door internally to other types of very high voltage tests (NF EN 62561-1, NF EN 62561-6, IEC/TS 62561-8) that are part of the normative certification process for lightning protection components.

L’article LiRi LAB upgrades its lightning R&D tools est apparu en premier sur LiRi.

These beacons are notably used in series in so-called “6.6 Amps” current loops to mark the edges of airport runways or taxiways. The electrical insulation of these loops is a concern for airport operators because they can be powered over long distances at up to over 4500 V AC. Indeed, excessively large earth leakage current losses are detrimental and can interfere with the automatic insulation measurement systems of the runway edge loop power system. These beacons, elements of the “6.6” loop, are therefore affected by this problem and must therefore present the highest possible insulation resistance. The company Delta Box, which has already carried out insulation resistance measurements in another laboratory, asked the LiRi LAB to validate a measurement protocol and to carry them out up to 5000 Volts, in alternative and direct voltage on a runway edge beacon designed by Delta Box. These products meet in particular recommendations of the American Federal Aviation Administration (F.A.A.) and the French Civil Aviation Authority (D.G.A.C.), as well as the recommendations of the International Civil Aviation Organization (I.C.A.O.) on the design of airfields.

These measurements are difficult to carry out due to the very low values of the leakage currents to earth. Particular care must be taken to measure a few microamps, or even a few nanoamps, without being disturbed by the electrical environment of the laboratory or the building.

The laboratory environment was therefore modified to recreate a test setup in agreement with the company Delta Box, with the aim of being as close as possible to the configuration of the installed equipment, while being able to measure with complete immunity very low earth leakage current values.

After joint validation of the test protocol with the customer, the measurements were successfully carried out thanks to very satisfactory values, of the order of approximately 6nA under 5000 Volts, which corresponds to an insulation resistance of approximately 800 GigaOhms.

Once again, the laboratory took great pleasure in participating and developing the measurement benches necessary for the completion of this service in a field of application different from that of lightning protection.

L’article Airfield runway beacon isolation measurements est apparu en premier sur LiRi.

Expanding knowledge

Researchers around the world are dedicated to the in-depth analysis of thunderstorm phenomena, seeking to unravel the mysteries of lightning formation and its consequences. Recent advances in the fields of meteorology, atmospheric physics and electrical engineering have shed new light on the complexity of lightning and paved the way for revolutionary innovations in lightning protection.

Scientific collaboration

Lightning research is a collaborative undertaking, bringing together scientists, engineers and safety experts from all over the world. Regular publications in specialized journals and conferences enable these researchers to share their findings, exchange ideas and collaborate on innovative research projects. This global community of researchers is a key driver of progress in understanding and protecting against lightning.

Technological advances

Thanks to the knowledge acquired through scientific research, new technologies are emerging to protect infrastructures and individuals against the ravages of lightning. Advanced detection systems enable real-time monitoring of thunderstorms, while sophisticated protection devices offer enhanced safety against discharges.

The importance of awareness

In addition to furthering research, the regular publication of scientific articles helps to raise public awareness of the dangers of lightning and promote the adoption of appropriate safety measures. By sharing the latest findings and best practices in lightning protection, these publications play a crucial role in preventing lightning-related accidents and damage.

The regular publication of scientific articles is a fundamental pillar in the fight against the devastating effects of lightning. By fuelling research and innovation, facilitating collaboration between researchers and raising public awareness, these publications help save lives and protect property from the ravages of lightning. In a world where extreme weather events are becoming increasingly frequent, the quest for knowledge has never been more crucial.

L’article Scientific articles on Lightning regularly released est apparu en premier sur LiRi.

The violence and speed of a lightning discharge make it a natural event whose mechanisms and specific features are difficult to understand. And yet, it’s at the heart of many news headlines. Lightning strike records are being broken all the time. Accidentology is progressing statistically. The study of lightning physics and the ongoing development of protection systems are a real priority.

LIRI regularly receives visits from foreign scientists and engineers. This enables them to benefit from the research center’s resources (notably its High Voltage Laboratory) and to gain a better understanding of the lightning phenomenon.

As lightning specialists in their own countries, our visitors find at LIRI several R&D engineers with remarkable experience in this field… sometimes even discovering wonderful human stories. Such was the case this week with a visit to LIRI from a partner from Panama… who studied in France for 5 years at an engineering school in Lille. And who, at the time, unknowingly sat on the same benches as one of LIRI’s scientific directors!

Sharing knowledge, establishing international research programs and contributing to scientific information are LIRI’s key missions. When this sharing also takes place in the context of wonderful human encounters, the mission is perfectly fulfilled!

L’article Scientific cooperation and nice stories est apparu en premier sur LiRi.

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L’article Impressive 800% increase of lightning activity in Arctic est apparu en premier sur LiRi.