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Batteries, chargers and circuit protection
News Release from: Dehn (UK) | Subject: Dehnconductor
Edited by the Engineeringtalk Editorial
Team on 20 January 2006
Lightning kept at a distance
Dehnconductor system from Dehn is a range of components designed to maintain the critical separation distance that is a key parameter in the planning and installation of lightning protection systems.
The Dehnconductor system from Dehn is a range of components designed to maintain the critical separation distance that is a key parameter in the planning and installation of lightning protection systems Maintaining the separation distance, which is determined by calculations in the EN62305-3 standard, is essential to prevent dangerous flashovers between external lightning protection systems and internal conductive elements such as electrical wiring, conduits and equipment
This article was originally published on Engineeringtalk on 20 Jun 2005 at 8.00am (UK)
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The system is suitable for installations where it is important to ensure there is no possibility of partial lightning currents entering buildings that may contain sensitive electronic equipment, such as hospitals, industrial plants or rooftop structures containing heating or air-conditioning controls.
Dehnconductor achieves its high level of protection by using a conductor development known as HVI.
To prevent flashovers, the conductor has an external coating that lets it direct high lightning impulse voltages to a reference potential by linking it to the building's equipotential bonding structure.
The HVI conductor is based on a coaxial structure with an outer diameter of 20mm, and consists of a 19mm2 copper wire, a thick high-voltage resistant insulation and an external weather-resistant coating.
Tests have shown that the HVI conductor can achieve an equivalent separation distance of 0.75m (in air) because of its high voltage resistance, allowing a significant increase in cable lengths.
A number of HVI conductor configurations are available, along with accessories including holders, terminal plates and insulating pipes.
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