21. Method for measuring partial discharges in instrument transformers. (30th November 1981) 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) ↗
22. Mineral oil-filled electrical equipment in service. Guidance on the interpretation of dissolved and free gases analysis. (21st July 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (44 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Mineral oil-filled electrical equipment. Application of dissolved gas analysis (DGA) to factory tests on electrical equipment. (30th June 2012) 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) ↗
24. Specification for combined transformers. (15th February 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Specification for current transformers. (15th February 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (46 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Specification for current transformers. (2nd February 1973) 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) ↗
27. Specification for instrument transformers. Three-phase voltage transformers for voltage levels having U m up to 52 kV. (15th April 1994) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. Specification for voltage transformers. (15th February 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (60 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. Specification for voltage transformers. (29th August 1975) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (40 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗