BAS EN 62305-3:2012

IEC 62305-3:2010 provides the requirements for protection of a structure against physical damage by means of a lightning protection system (LPS), and for protection against injury to living beings due to touch and step voltages in the vicinity of an LPS (see IEC 62305-1). 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:<br /> 1) Minimum thicknesses of metal sheets or metal pipes given in Table 3 for air-termination systems are assumed as not able to prevent hot-spot problems.<br /> 2) Steel with electro-deposited copper is introduced as material suitable for LPS.<br /> 3) Some cross-sectional areas of LPS conductors were slightly modified.<br /> 4) For bonding purposes, isolating spark gaps are used for metal installations and SPD for internal systems.<br /> 5) Two methods simplified and detailed are provided for evaluation of separation distance.<br /> 6) Protection measures against injuries of living beings due to electric shock are considered also inside the structure.<br /> 7) Improved information for LPS in the case of structures with a risk of explosion are given in Annex D (normative).<br /> This bilingual version (2012-06) corresponds to the monolingual English version, published in 2010-12.