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Aramid pressboard for electrical purposes Part 1- Definitions, designations and general requirements. Original standard BS EN 61629-1-1997 (1999) in PDF full version. Additional info + preview on request

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Aramid pressboard for electrical purposes Part 2- Methods of test. Original standard BS EN 61629-2-1997 (1999) in PDF full version. Additional info + preview on request

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Short-circuit currents in d.c. auxiliary installations in power plants and substations Part 1- Calculation of short-circuit currents (IEC 61660-1-1997). Original standard BS EN 61660-1-1997 (2009) in PDF full version. Additional info + preview on request

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Short-circuit currents in DC auxiliary installations in power plants and substations Part 2- Calculation of effects. Original standard BS EN 61660-2-1997 (2000) in PDF full version. Additional info + preview on request

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Fibre optic connector interfaces Part 2- Type BFOC/2,5 connector family. Original standard BS EN 61754-2-1997 (1999) in PDF full version. Additional info + preview on request

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Transformers and inductors for use in telecommunication and electronic equipment Main dimensions of coil formers Part 1- Coil formers for laminated cores. Original standard BS EN 61797-1-1997 (1999) in PDF full version. Additional info + preview on request

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