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Electricity metering equipment (a.c.) - General requirements, tests and test conditions Part 21- Tariff and load control equipment Incorporating corrigenda December 2005 and July 2018 EUROPEAN STANDARD EN 62052-21. Original standard BS EN 62052-21-2004 + A1-2017 (2018) in PDF full version. Additional info + preview on request

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Particular requirements Part 11- Electromechanical meters for active energy (classes 0,5, 1 and 2) Incorporating corrigenda February 2004 and July 2018 EUROPEAN STANDARD EN 62053-11. Original standard BS EN 62053-11-2003 + A1-2017 (2018) in PDF full version. Additional info + preview on request

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Electricity metering equipment (a.c.). Particular requirements - Pulse output devices for electromechanical and electronic meters (two wires only). Original standard BS EN 62053-31-1999 in PDF full version. Additional info + preview on request

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Electricity metering (a.c.) - Tariff and load control Part 11- Particular requirements for electronic ripple control receivers Incorporating corrigenda October 2005 and July 2018. Original standard BS EN 62054-11-2004 + A1-2017 (2018) in PDF full version. Additional info + preview on request

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Electricity metering (AC) - Tariff and load control Part 21- Particular requirements for time switches (IEC 62054-21-2004) EUROPEAN STANDARD EN 62054-21. Original standard BS EN 62054-21-2004 + A1-2017 (2018) in PDF full version. Additional info + preview on request

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Fibre optic interconnecting devices and passive components - Fibre optic WDM devices Part 1- Generic specification. Original standard BS EN 62074-1-2014 in PDF full version. Additional info + preview on request

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