ÖVE/ÖNORM EN 62561-3

This part of IEC 62561 specifies the requirements and tests for isolating spark gaps (ISG) for lightning protection systems. ISGs can be used to indirectly bond a lightning protection system to other nearby metalwork where a direct bond is not permissible for functional reasons. Typical applications include the connection to: · earth termination systems of power installations; · earth termination systems of telecommunication systems; · auxiliary earth electrodes of voltage-operated, earth fault circuit breakers; · rail earth electrode of AC and DC railways; · measuring earth electrodes for laboratories; · installations with cathodic protection and stray current systems; · service entry masts for low-voltage overhead cables; · bypassing insulated flanges and insulated couplings of pipelines. This standard does not cover applications where follow currents occur.