Engineering:IEC 61000-4-4

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Short description: Electrotechnical immunity standard

IEC 61000-4-4 is the International Electrotechnical Commission's immunity standard based on electrical fast transient (EFT) / burst transients. This publication is part of the greater IEC 61000 group of standards which is covered under IEC TR 61000-4-1:2016.[1] The current third version of this standard (2012) replaces the second version (2004).[2] The goal of this standard is to establish a common and reproducible reference for evaluating the immunity of electrical and electronic equipment when subjected to electrical fast transient/bursts on supply, signal, control and earth ports.[3]

EFT test levels (IEC/EN 61000-4-4)[4]
Power ports, earth ports (PE)
Level Voltage peak (kV) Repetition frequency (kHz)
1 .5 kV 5 or 100 kHz
2 1 kV 5 or 100 kHz
3 2 kV 5 or 100 kHz
4 4 kV 5 or 100 kHz
x special special
x can be any level specified in product specific standards

Note: This tables purpose is a quick overview. It does not contain the same level of detail as the official IEC 61000-4-4.

The cause of electrical fast transients (EFT) come from an arc when mechanical contact is open due to a switching process.[5] Given the fast rise time and voltage of these pulses having a solid ground connection is important during the testing process.[6] Testing for EFT often requires a capacitive coupling clamp (CCL), which is employed to add disturbances to nominal signals.[7]

See also

References

  1. ↑ "IEC TR 61000-4-1:2016 - IEC Webstore - electromagnetic compatibility, EMC, smart city". https://webstore.iec.ch/publication/24660. 
  2. ↑ "IEC 61000-4-4:2012 - IEC Webstore - electromagnetic compatibility, EMC, smart city, rural electrification". https://webstore.iec.ch/publication/4222. 
  3. ↑ "IEC 61000-4-4 Fast Transient/Burst Testing Lab with EMC / EMI Experts". https://keystonecompliance.com/iec-61000-4-4/. 
  4. ↑ IEC 61000-4-2 (3.0 ed.). International Electrotechnical Commission (IEC). December 2008. pp. 11. ISBN 978-0-58069-361-8. 
  5. ↑ "Teseq: IEC/EN 61000-4-4". http://www.teseq.com/standards/iec-en-61000-4-4.php. 
  6. ↑ "EN IEC 61000-4-4 - EFT/Burst Immunity Generator Rentals". https://transientspecialists.com/collections/en-iec-61000-4-4. 
  7. ↑ "Modeling the IEC 61000-4-4 EFT injection clamp - Request PDF". https://www.researchgate.net/publication/224344516. 



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