มอก. 3024 เล่ม 3-2563

Scope (English)

This standard 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 power and DC railways, measuring earth electrodes for laboratories, installations with cathodic protection and stray current systems, service entry masts for low-voltage overhead cables, by passing insulated flanges and insulated couplings of pipelines.