BS EN Protection against lightning Part 4: Electrical and electronic systems within structures. BS EN Physical damage to structures and life hazard. Lightning Protection System (LPS). BS EN Electrical and electronic systems within . requirements of BS EN range of standards, the is relatively new and replaced the BS document. Risk Management – Bs EN
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Customers who bought this product also bought BS EN Protection levels within a zone must be dn with the immunity characteristics of the equipment to be protected, ie, the more sensitive the equipment, the more protected the zone required. This simply means a series of SPDs whose locations and LEMP handling attributes are co-ordinated in such a way as to protect the equipment in their sn by reducing the LEMP effects to a safe level.
BS EN will take some time for people to fully interpret and comprehend, but by using the resources available, the issues they may initially encounter certainly can be mastered.
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It includes many more parameters than BS which devotes 9 pages including figures, whilst BS EN contains some pages.
Part 3 Physical damage to structures and life hazards The third part of the new standard relates directly to the main body of BSbut there are significant differences between the two. In BS a system was used where wn down conductor was attached to an earth electrode. Find Similar Items This product falls into the following categories. The first stage of the risk assessment is to identify the types of loss that a structure and its contents can incur.
These include risk bw software to automate the complex and repetitive risk calculations, new technical literature, training seminars and face-to-face assistance. The existing fabric and layout of a building 26305-4 make readily apparent zones, or LPZ techniques may have to be applied to create the required zones.
Appropriate SPDs should be fitted wherever services cross from one LPZ to another Conclusion So, this brief overview of the new BS EN lightning protection standard clearly demonstrates how it is more complex and exacting than its predecessor. Expanding on an article in the May issue of Electrical Review John Sherlock of Bd pictured rightoffers an overview of the new standard and the consolation that, complex as the new standard may be, its key concepts are not alien, and, with relevant technical advice and support, it can be mastered.
SPDs also provide additional protection over bonding and shielding measures through protection in both common and differential modes.
Related Eb Be prepared for lightning Lightning Protection – Combined lightning and surge arresters: LPZ 1 sees limited induced current and damped magnetic field whilst LPZ 2 has a further reduction of induced current and further damped magnetic field. Click to learn more. Once the applicable types of loss have been identified, a tolerable risk RT for each can be looked up in a table contained in the National Annexes.
Lightning protection – Mastering the maze of BS EN
BS EN contains a series of National Annexes, from which individual countries, like the UK, have used their own interpretation and perception of risk to compile parameters for certain elements of the risk assessment. For new builds, bonding and screening measures can be integrally designed to form part of the complete lightning protection measures system LPMS.
BS recommends the inspection of any LPS annually. So there may be a heavy duty lightning current Type I SPD at the service entrance to handle the majority of the surge energy, plus downstream overvoltage SPDs to protect terminal equipment. E for hybrid system for automotive connectivity.
Search all products by. You may find similar items within these categories by selecting from the choices below:. Please download Chrome or Firefox or view our browser tips. In BSthe protection of electronic equipment is only included in an informative annex.
For example, consider the mesh sizes for an air termination network and spacing of down conductors in BS EN This ensures equipment is not only protected from damage but also remains operational during lightning activity. It does not, however, take into account the economic value of consequential losses from system downtime.
BS EN 62305-4:2011
Moreover, established suppliers of lightning protection solutions are now offering a wealth of quality support tools. Your basket is empty. At the moment, it runs concurrently with BSbut ultimately BS will be withdrawn and BS EN will be the only recognised standard by the end of August A series of trial and error calculations is then required in order that a sufficient level of lightning protection can be defined.