Q&A Lightning Surge Simulators (Model: LSS series)

 

About reversal of surge polarity and coupling

 

Q1.

For surge testing to the IEC 61000-4-5 standard, the following two coupling modes are the same meaning?
"Positive polarity surge coupling to L1 with reference to L2" and "negative polarity coupling to L2 with reference to L1"

 

 

   
 

 

  

Q1.

For surge testing to the IEC 61000-4-5 standard, the following two coupling modes are the same meaning?  "Positive polarity surge coupling to L1 with reference to L2" and "negative polarity coupling to L2 with reference to L1"

 

 

Yes, the same amount of current flow in the same direction, meaning the same conditions.  Therefore there is no need to carry out the both of the said two settings.  Coupling to L1 to L2 in the both polarities is enough to evaluate line-to-ground (often referred to as normal) mode for single-phase-operated EUT.

   

 

 

 

 

   

 

   
   

 

 

   

 

 

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