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
|Published (Last):||18 May 2018|
|PDF File Size:||6.73 Mb|
|ePub File Size:||10.63 Mb|
|Price:||Free* [*Free Regsitration Required]|
These include risk assessment software to automate the complex and repetitive risk calculations, new technical literature, training seminars and face-to-face assistance. Customers who bought this product also bought BS EN If R is greater than RT, then protection measures, as determined from the tables given in the standard, are required. Search all products by. Part 1 General 622305-4 This is an introduction to the other parts of the standard.
Lightning Protection – Out with the old, in with the new StrikeRisk for lightning calculations Overvoltage – When lightning strikes. Lightning and surge protection. In BS a bx was used where each down conductor was attached to an earth electrode.
Accept and continue Learn more about the cookies we use and how to change your settings. Switches support high performance. However, the key principles are well established and pretty be to all. The BS British Standard on lightning protection has existed for decades.
When applying bonding, shielding and SPDs, technical excellence must be balanced with economic necessity. However, for an existing structure, retrofitting a set of co-ordinated SPDs is likely to be the easiest and most cost-effective solution. Your basket is empty. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
A series of trial and error calculations is then required in order that a sufficient level of lightning protection can be defined.
Most read Latest news. It includes many more parameters than BS which devotes 9 pages including figures, whilst BS EN contains some enn. BS EN contains extensive sections, with detailed explanations on the reasons for, and methodology of, equipotential bonding. Take the smart route to manage medical device compliance.
Call to action for investment in training. Successive zones are therefore characterised by significant reductions in LEMP severity, achieved through a combination fn protection measures such as bonding, shielding and the use of SPDs.
Resources and Waste Strategy release. Expanding on an article in the May issue of Electrical Review John Sherlock of Furse 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, bz relevant technical advice and support, it can be mastered.
This ensures equipment is not only protected from damage but also remains operational during lightning activity. You may experience issues viewing this site in Internet Explorer 9, 10 or The existing fabric and layout of a building may make readily apparent zones, or LPZ techniques may have to be applied to create the required zones.
Structural lightning protection cannot now be considered in isolation from transient overvoltage or surge protection. Find Similar Items This product falls into the following categories. 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.
If the actual risk R is lower than the tolerable risk RTthen no protection measures are needed. 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. 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.
The new standard consists of four parts: Moreover, established suppliers of lightning protection solutions are now offering a wealth of quality support tools.
Maintenance, Inspection, Building services, Electromagnetic fields, Test methods, Hazard prevention in buildings, Lightning protection, Electrical equipment, Lightning, Structures, Damage, Electrical protection equipment, Earthing, Electronic equipment and components, Electrical installations, Climatic protection, Lightning conductors, Electrical safety, Telecommunication systems, Buildings, Surge protection, Installation.
BS EN 62305-4:2011
Click to learn more. BS EN came into force on 1 September It requires the bonding of all metallic services to the main equipotential bonding bar. Part 4 Electrical and electronic systems within structures This part contains one of the most critical differences between the two standards. It does not, however, take into account the economic value of consequential losses from system downtime. Protection levels within a zone must be co-ordinated with the immunity characteristics of the equipment to be protected, ie, the more sensitive the equipment, the more protected the zone required.
You may find similar items within these categories by selecting from the choices below:. Worldwide Standards We can source any standard from anywhere in the world. BS EN goes further, categorising inspection into visual inspection, complete inspection and critical systems complete inspection, whose frequency depends on the LPL in force.
Lightning protection – Mastering the maze of BS EN
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 Debut for hybrid system for automotive connectivity. Related Articles Be prepared for lightning Lightning Protection – Combined lightning and surge arresters: Please download Chrome or Firefox or view our browser tips.
The new standard also includes three methods for determining the position of the air termination system: