BS EN 62305-2 FREE DOWNLOAD

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. 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 environment by reducing the LEMP effects to a safe level. When applying bonding, shielding and SPDs, technical excellence must be balanced with economic necessity. From that risk assessment, a structure may need both a structural LPS and a fully co-ordinated set of surge protection devices SPDs or just overvoltage protection alone. Moreover, established suppliers of lightning protection solutions are now offering a wealth of quality support tools. Its purpose is to provide a procedure for the evaluation of such a risk. A series of trial and error calculations is then required in order that a sufficient level of lightning protection can be defined.

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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.

Your basket is empty. Related Articles Be prepared for lightning Lightning Protection - Combined lightning and surge arresters: Successive zones are therefore characterised by significant reductions in LEMP severity, achieved through a combination of protection measures such as bonding, shielding and the use of SPDs.

These include risk assessment software to automate the complex and repetitive risk calculations, new technical literature, training seminars and face-to-face assistance.

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Lightning protection - Mastering the maze of BS EN

Worldwide Standards We can source any standard from anywhere in the world. 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.

Lightning Protection - Out with the old, in with the new StrikeRisk for lightning calculations Overvoltage - When lightning strikes. It does not, however, take into account the economic value of consequential losses from system downtime.

BS EN 62305 – Protection Against Lightning Strikes & Risk Management Notes

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, with relevant technical advice and support, it can be mastered.

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 Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents. BS EN contains extensive sections, with detailed explanations on the reasons for, and methodology of, equipotential bonding. Eh 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.

However, BS EN details the use of air rods or finials, catenary or suspended conductors or a meshed conductor network, in any combination. This document supersedes EN Please download Chrome or Firefox or view our browser tips. It includes many more parameters than BS which devotes 9 pages including figures, whilst BS EN contains some pages. Most read Latest news. Once an upper tolerable limit for the risk has been selected, this procedure allows the selection of appropriate protection measures to be adopted to reduce the risk to or below the tolerable limit.

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.

When applying bonding, shielding and SPDs, technical excellence must be balanced with economic necessity. A series of trial and error calculations is then required in order that a sufficient level of lightning protection can be defined. Risk management BS EN outlines risk assessment for a structure or service from lightning flashes to earth.

We use cookies to make our website easier to use and to better understand your needs. For new builds, bonding and screening measures can be integrally designed to form part of the 6230-2 lightning protection measures system LPMS. This ensures equipment is not only protected from damage but also remains bd during lightning activity. 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.

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BS EN Protection against lightning. Risk management

If R is greater than RT, then protection measures, as determined from the tables given in the standard, are required. Evaluation des risques Title in German Blitzschutz. However, the key principles are well established and pretty familiar to all.

In BSa mesh arrangement was the commonly used layout for the air termination network. If the actual risk R is lower than the tolerable risk RTthen no protection 6305-2 are needed. Find Similar Items This product falls into the following categories. Supplement to BS EN Climate researchers launch carbon target online tool.