• Hydrogen Technologies Standards form the basic framework for market ramp-up

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  • Climate change Standards and specifications support climate targets

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  • Smart Farming Standards and specifications are drivers for the digitalization of agriculture

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Projects of IEC/SC 77A

IEC 77A/733/DC 2010-10-01 Maintenance programme - Call for comments regarding preparation of Edition 3 of IEC 61000-4-30 Electromagnetic compatibility (EMC) : Testing and measurement techniques - Power Quality Measurement Methods More  Comment 
IEC 77A/725A/DC 2010-06-11 Introductory memorandum for the proposed Harmonic Calibration & Verification protocol (to be published as a Technical Report) (This version cancels and replaces document 77A/725/DC) More  Comment 
IEC 77A/725/DC 2010-06-04 Introductory memorandum for the proposed Harmonic Calibration & Verification protocol (to be published as a Technical Report) More  Comment 
IEC 77A/720/DC 2010-03-26 Interpretation sheet (formal explanation) regarding 61000-4-11 Ed 2 More  Comment 
IEC 77A/681/DTS 2009-02-20 IEC 61000-3-5 Ed.2: Electromagnetic compatibility (EMC) - Part 3-5: Limits - Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 75A More  Comment 
IEC 77A/662/CD 2008-08-22 IEC 61000-3-5 Ed.2: Electromagnetic compatibility (EMC) - Part 3: Limits - Section 5: Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 75 A More  Comment 
IEC 77A/741/DTR 2007-12-21 IEC/TR 61000-3-14 Ed.1: Electromagnetic compatibility (EMC) - Part 3-14: Assessment of emission limits for the connection of disturbing installations to LV power systems More  Comment 
IEC 77A/605/DC 2007-08-17 5th Harmonic Compatibility Level in IEC Standards 61000-2-2, 61000-2-4 and 61000-2-12 - Call for information More  Comment 
IEC 77A/582/CDV 2007-04-20 Amendment to IEC 61000-3-2: Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current = 16 A per phase) More  Comment 
IEC 77A/541/CDV 2006-06-23 IEC 61000-3-2 A1f4: Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current = 16 A per phase) More  Comment 

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