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BS 6651 LIGHTNING PROTECTION PDF

Lightning Protection BS – Download as PDF File .pdf), Text File .txt) or read online. Information from Omega Red on British Standards relating to Lightning Protection . Including BS EN , BS , BS EN to BS EN. BS Code of practice for protection of structures against lightning.

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Part 1 General principles This is an introduction to the other parts of the standard. Omega Brochures Open product brochure Height safety brochure. Switches support high performance.

The new standard consists of four parts: Call to action for investment in training. Customers who bought this product also bought BS General principles Part 2: Guidance protwction provided on how to assess the risk of being struck and how to compile an index figure as an aid to deciding whether a particular structure is in need of protection.

British Standards relating to Lightning Protection

Part 4 Electrical and electronic systems within structures This part contains one of the most critical differences between the two standards. Protection of offshore oil and gas installations does not fall within the scope of this British Standard.

Moreover, established suppliers of lightning protection solutions are now offering a wealth of quality support tools. BS EN is the latest reference document for protection against lightning. The faster, easier way to work with standards. 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.

British Standards – Lightning Protection | Omega Red

This British Standard provides guidance on the design of systems for the protection of structures against lightning and on the selection of materials. In BSthe protection of electronic equipment is only included in an informative annex. The first stage of the risk assessment is to identify the types of loss that a structure and its contents can incur.

Electrical and electronic systems within buildings. Most read Latest news. Search all products by. The ligghtning parts are as follows:.

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BS 6651:1999

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.

These include risk assessment software to automate the complex and repetitive risk calculations, new technical literature, training seminars and face-to-face assistance. BS EN provides the general principles to be followed in the protection of structures against lightning, including their installations and contents as well as people.

Lightning Protection – Out with the old, in with the new StrikeRisk for lightning calculations Overvoltage – When lightning strikes. Accept and continue Learn more about the cookies we use and how to change your settings.

BS EN contains a series of National Annexes, from which individual countries, like the UK, have protevtion their own interpretation and perception of risk to compile parameters for certain elements of the risk assessment.

Lightning protection – Mastering the maze of BS EN

A series of trial and error calculations is then required in order that a sufficient level of lightning protection can be defined. 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. The actual risk R is then arrived at through a series of calculations, using formulae in the standard and including various weighting factors.

You may find similar items within these categories by selecting from the choices below:. We use cookies to make our website easier to use and to better understand your needs. 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. Risk management Part 3: The guidance provided is of a general nature and its application to specific lightning protection installations has to take into account the particular conditions pertaining to those installations.

This standard includes the following cross references: SPDs are required under BS EN ; they are part of the internal LPS and are installed firstly to prevent dangerous lightning currents from entering a building via its services, and secondly to reduce the risk of damage to electrical and electronic equipment and critical systems from transient over-voltages. Recommendations are made for special cases such as explosives stores and temporary structures, e.

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For new builds, bonding and screening measures can be integrally designed to form part of the complete lightning protection measures system LPMS.

A lightning protection system commissioned or installed on a structure prior to this date should be maintained to BS Guidance is also provided on the protection of electronically stored data.

The BS British Standard on lightning protection has existed for decades. For example, consider the mesh sizes for an air termination network and spacing of down conductors in BS EN September Replaced By: So there may be a heavy duty liggtning current Type I SPD at the service entrance to handle the majority of the surge energy, plus downstream overvoltage SPDs to protect terminal equipment.

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.

The new standard also includes three methods for determining the position of the air termination system: Take the smart route to manage medical device compliance. BS EN came into force on 1 September BS EN is applicable to risk assessment for a structure due to lightning flashes. 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.

In BS a system was used where each down conductor was attached to an earth electrode. BS EN contains extensive sections, with detailed explanations on the reasons for, and protectoin of, equipotential bonding.

Successive zones are therefore characterised by significant reductions in LEMP severity, achieved through a combination of protection measures such as bonding, 651 and the use of SPDs. However, BS EN details the use of air rods or finials, catenary or suspended conductors or a meshed conductor network, in any combination. Lightning and surge protection.