1. BS EN 61820-3-4. Electrical installations for lighting and beaconing of aerodromes. Safety secondary circuits in series circuits. General safety requirements. (7th December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (42 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. BS EN 61820-3-2. Electrical installations for lighting and beaconing of aerodromes. Particular requirements for series circuit power supplies. (12th January 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (34 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Electrical installations for lighting and beaconing of aerodromes. Safety secondary circuits in series circuits. General safety requirements Part 3-4, (21st June 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (52 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗