DIN 30691
Lightning current tests - flanges with electrically conductive gaskets
Blitzstromprüfungen - Flansche mit elektrisch leitfähigen Dichtungen
Brief description
DIN 30691 specifies requirements for testing electrically conductive gaskets in flange connections based on DIN EN 62561-1, which are to be used as lightning protection system components. Gaskets successfully tested according to this standard can be used in the construction of a lightning protection system (LPS) designed and constructed in accordance with the IEC 62305 series of standards. The requirements and tests have been prepared following the European Standard DIN EN 62561-1, Lightning Protection System Components (LPSC) - Part 1: Requirements for connection components (IEC 62561-1:2017). Electrically conductive seals are, in the sense of DIN EN 62561-1, metallic connection components similar to connection and bridging components. The tests described in this standard are carried out on a test arrangement in accordance with structure B9, annex B of DIN EN 62561-1. The initial requirement for gaskets used in gas systems is that they meet the requirements listed in DIN 30690-1. Successfully tested gaskets meet the requirements of DIN 30691 and DVGW G 491 (A):2022 Clause 7.2.3.3. With successful testing and proper installation, the flange connection including lightning current carrying gasket meets the minimum requirements for equipotential bonding for systems in hazardous areas according to DIN EN 60079-14. This document is to be included in the "Gas" rules and regulations of the DVGW, Deutscher Verein des Gas- und Wasserfaches e. V. (German Technical and Scientific Association for Gas and Water).
