441. Controllers with analogue signals for use in industrial-process control systems. Guidance for inspection and routine testing Part 2, (28th February 1989) 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) ↗
442. Specification for high-voltage alternating-current circuit-breakers. (29th April 1988) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (192 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
443. Electrical installations for open-cast mines and quarries. Recommendations for winning, stacking and processing machinery, pumps and low signal level and communications systems Part 4, (30th September 1988) 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) ↗
444. Radio equipment used in mobile services. Methods of measurement for selective-calling and data equipment Part 6, (31st October 1989) 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) ↗
445. Low-voltage switchgear and controlgear assemblies. Specification for particular requirements of fuseboards Part 11, (30th June 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
446. Radio equipment used in mobile services. Methods of measurement for receivers employing single-sideband techniques (R3E, H3E or J3E) Part 5, (29th September 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (70 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
447. Low-voltage controlgear. Specification for semiconductor contactors (solid state contactors) Part 2, (30th November 1987) 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) ↗
448. Specification for electrical apparatus for explosive atmospheres with type of protection N. (29th February 1988) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (28 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
449. Methods of test and general requirements for road vehicle alternators with regulators. (29th September 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
450. High fidelity audio equipment and systems; minimum performance requirements. Specification for high fidelity systems for use in vehicles (for example, motor cars); FM radio tuner units Part 13, (31st August 1989) 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) ↗