151. BS EN 61109. Insulators for overhead lines. Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V. Definitions, test methods and acceptance criteria. (11th May 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (51 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
152. BS EN 61386-22 Ed.2.0. Conduit Systems for cable management. Part 22. Particular requirements. Pliable conduit systems (6th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
153. BS EN 61386-23. Conduit systems for cable management. Part 23. Particular requirements. Flexible conduit systems (6th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (15 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
154. BS EN 61643-21. Low voltage surge protective devices. Part 21. Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods (30th March 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (84 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
155. BS EN 61800-3. Adjustable speed electrical power drive systems. Part 3. EMC requirements and specific test methods for PDS and machine tools with embedded PDS (17th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (126 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
156. BS EN 61810-7-4. All-or-nothing electrical relays. Tests and Measurements. Part 7-4. Dielectric strength test, impulse voltage test (2nd February 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
157. BS EN 61812-1. Time relays for industrial and residential use. Part 1. Requirements and tests (6th February 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (63 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
158. BS EN 61869-1. Instrument transformers. Part 1. General requirements (20th August 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (142 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
159. BS EN 61869-201 Ed1.0. Instrument transformers. Part 201. General requirements for Instrument Transformers for low voltage applications (12th November 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
160. BS EN 61935-2. Specification for the testing of balanced and coaxial information technology cabling. Part 2. Cords as specified in ISO/IEC 11801 and related standards (1st April 2020) 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) ↗