• 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/487/CD 2005-03-11 IEC 61000-3-2-A3f2: Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current = 16 A per phase) More  Comment 
IEC 77A/479/NP 2004-11-12 New Work Item Proposal on Overvoltages on public electricity distribution networks More  Comment 
IEC 77A/493/FDIS 2004-03-12 IEC 61000-3-3-A2 Ed.1: Test conditions for tumble dryers More  Comment 
IEC 77A/449/CD 2003-11-28 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/473/CDV 2003-11-28 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/466/CDV 2002-04-19 IEC 61000-4-34: Electromagnetic compatibility (EMC) Part 4-34: Testing and measuring techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current more than 16 A per phase. Basic EMC publication More  Comment 
IEC 77A/460/DTR 2002-04-12 IEC 60725 "Considerations on reference impedances for use in determining the disturbance characteristics of household appliances and similar electrical equipment" More  Comment 
IEC 77A/375/DTR 2002-02-22 ELECTROMAGNETIC COMPATIBILITY (EMC) - Part 2-8: ENVIRONMENT Voltage dips and short interruptions on public electric power supply systems with statistical measurement results. More  Comment 
IEC 77/266A/CD 1998-12-18 CORRIGENDUM to Document 77A/266/CD: Electromagnetic compatibility (EMC) - Part 2-12: Environment - Compatibility levels for low-frequency conducted disturbances and signalling in public medium-voltage power supply systems. Basic EMC publication More  Comment 
IEC 77A/237/NP 1998-06-12 New Work Item Proposal on Assesment of electromagnetic immunity and emission requirements for dispersed generation in LV networks More  Comment 

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