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
editReferences
edit- ^ "IEC TR 61000-4-1:2016 - IEC Webstore - electromagnetic compatibility, EMC, smart city". webstore.iec.ch.
- ^ "IEC 61000-4-4:2012 - IEC Webstore - electromagnetic compatibility, EMC, smart city, rural electrification". webstore.iec.ch.
- ^ "IEC 61000-4-4 Fast Transient/Burst Testing Lab with EMC / EMI Experts". Keystone Compliance.
- ^ IEC 61000-4-2 (3.0 ed.). International Electrotechnical Commission (IEC). December 2008. p. 11. ISBN 978-0-58069-361-8.
- ^ "Teseq: IEC/EN 61000-4-4". www.teseq.com.
- ^ "EN IEC 61000-4-4 - EFT/Burst Immunity Generator Rentals". Transient Specialists.
- ^ "Modeling the IEC 61000-4-4 EFT injection clamp - Request PDF". ResearchGate.