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  • BSI
    BS EN 62305-2:2012 Protection against lightning - Risk management
    Edition: 2013
    $569.57
    / user per year

Description of BS EN 62305-2:2012 2013

IEC 62305-2:2010 is applicable to risk assessment for a structure due to lightning flashes to earth. Its purpose is to provide a procedure for the evaluation of such a risk. 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. This second edition cancels and replaces the first edition, published in 2006, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
1) Risk assessment for services connected to structures is excluded from the scope.
2) Injuries of living beings caused by electric shock inside the structure are considered.
3) Tolerable risk of loss of cultural heritage is lowered from 10 -3 to 10 -4. The value of tolerable risk of loss of economic value ( R T = 10 -3) is introduced, to be used when data for cost/benefit analysis are not available.
4) Extended damage to surroundings structures or to the environment is considered.
5) Improved equations are provided for evaluation of
- collection areas relevant to flashes nearby a structure,
- collection areas relevant to flashes to and nearby a line,
- probabilities that a flash can cause damage,
- loss factors even in structures with risk of explosion,
- risk relevant to a zone of a structure,
- cost of loss.
6) Tables are provided to select the relative amount of loss in all cases.
7) Impulse withstand voltage level of equipments was extended down to 1 kV.
This bilingual version corresponds to the monolingual English version, published in 2010-12.

Standard NumberBS EN 62305-2:2012
TitleProtection against lightning - Risk management
StatusRevision Underway
Publication Date2013-04-30
ReplacesBS EN 62305-2:2006, BS EN 62305-2:2006
Identical National Standard OfIEC 62305-2:2010, EN 62305-2:2012, EN 60947-5-4:2003
Modified National Standard OfIEC 62305-2:2010
DescriptorsClimatic hazards, Lightning conductors, Surge protection, Hazard prevention in buildings, Mathematical calculations, Telecommunication systems, Climatic protection, Electrical safety, Damage, Risk assessment, Structures, Buildings, Electrical protection equipment, Climatic zones, Lightning, Management, Building services, Hazards, Lightning protection, Electrical installations, Fire safety in buildings, Electrical equipment
ICS29.020 Electrical engineering in general, 91.120.40 Lightning protection
CommitteeGEL/81
ISBN978 0 580 61193 3
PublisherBSI
Pages146

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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