Understand Electrical Fast Transient (EFT) Meaning

In summary, Electrical Fast Transient (EFT) refers to a type of electrical interference that can be picked up on communication or IO lines, or power lines, from sources such as lightning or motors. There is a standard test for immunity against EFTs, which is EN (or IEC) 61000-4-4.
  • #1
pixel01
688
1
Can anyone explain to me the meaning of the terms : Electrical Fast Transisient (EFT)?

Thanks
 
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  • #2
pixel01 said:
Can anyone explain to me the meaning of the terms : Electrical Fast Transisient (EFT)?

Thanks

That's the kind of electrical interference that you can pick up on your communication or IO lines (or power lines) from nearby lightning hits, or from other noise sources like motors. There is a standard test for immunity against EFTs on both your IO lines and power lines. A typical test standard is EN (or IEC) 61000-4-4:

http://www.haefelyemc.com/pdf_downl...t_testing_according_IEC61000-4-4_Edition2.pdf
 
  • #3
Thank you bekerman for the help.
 

Related to Understand Electrical Fast Transient (EFT) Meaning

1. What is Electrical Fast Transient (EFT) in simple terms?

Electrical Fast Transient (EFT) is a short duration high voltage spike or disturbance that can occur in an electrical circuit due to switching operations, lightning strikes, or other external factors. It can cause malfunction or damage to electronic devices if not properly protected against.

2. How does EFT affect electronic devices?

EFT can affect electronic devices by causing temporary or permanent malfunctions, data loss, or even physical damage. It can also reduce the lifespan of electronic components and degrade their performance over time.

3. What are the common sources of EFT?

The common sources of EFT include lightning strikes, switching operations in power grids, electromagnetic interference from nearby electronic devices, and electrostatic discharge from human contact.

4. How can EFT be prevented or minimized?

EFT can be prevented or minimized by implementing proper grounding and shielding techniques, using surge protectors or filters, and following proper installation procedures for electronic devices. Additionally, adhering to international standards and regulations for EFT protection can also help prevent its effects.

5. Is EFT the same as Electromagnetic Interference (EMI)?

No, EFT and EMI are not the same. EFT is a type of disturbance caused by external sources, while EMI is a broader term that encompasses all types of electromagnetic disturbances, including EFT. EFT specifically refers to fast transient disturbances, while EMI can occur at any frequency.

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