136 BT – Item 2.7.5 Feedback related to Dl 35/032 (Protection against lightning: EN 62305 - NF C 17- 102)

| Kategorie: Firemní tiskovina  |

Vydal: Úřad pro technickou normalizaci, metrologii a státní zkušebnictví Autor: CENELEC 136 BT

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The standard includes also Annexes among which: – Annex giving information protection model which positioning ESE air-terminals is based; – Annex dealing with risk evaluation The scope and the contents 17-102 clearly shows that not “Product Standard” but rather than “Installation/ Product Standard”, See Avant-Propos. Any improved performance air- terminations due “active” elements (such ESE) which modify the protected volume provided by the air-termination system (EN 62305), does not comply with such EN; - because status EN, standards lightning protection providing requirements other than those reported 62305-1 (for instance modifying the protected volume provided air- termination system) are conflicting standards.” - 62305-3 (and IEC 62305-3), clause 5. For the determination the volume protected only the real physical dimensions the metal air- termination systems shall considered. The contents this standard overlap the ones 62305-2 and 62305-3.3 and Annex A.2.2.2.1, page (see Annex A): “The position the air-termination system considered adequate the structure be protected fully situated within the protected volume provided the air-termination system.3.1, page (see Annex A): “To conform this standard, all types air-termination systems shall positioned accordance with Clauses 5.1, page (see Annex A): “LPS shall comply with requirements IEC 62305-3 . 4 . Fundamental topics these standards are: - 62305-1 (and IEC 62305-1), last sentence clause 8.1) 62305 Some main comments, based the available working documents, are reported below, taking into consideration that 62305 series has applied whole (see 62305-1, Clause “Normative reference”, page 2). Comments conflicting clauses 17-102 towards 62305 3.17-102, July 1995 (later modified with minor additions, ratified January 2009) This standard provides the requirements (information for the design, construction, inspection and maintenance) for lightning protection systems (LPS) using early streamer emission lightning terminals (ESE).” - 62305-3 (and IEC 62305-3), Annex (normative) clause A.2, 5.” As consequence, according the present requirements 62305 series which were voted and approved large majority - the European approved “Rules Art” for LPS the one completely fully complying with the set of four Standards 62305 (which endorses IEC 62305). The purpose these LPS safeguard persons and property effective possible. 3