Re: [PSES] Clearance components

[Boštjan Glavič]

Hi Amund,

In the term of IEC 62368-1 it would be considered as resistive PIS. You need to 
apply fire cone to PIS and check if combustible material is inside fire cone. 
If it is inside, special flammability requirements apply.

You have also other options to prove that combustible material is acceptable, 
maybe if it is small part (<4g) or it passes fault condition or…

Clause 6.4 is very extensive and gives a lot of options.

Best regards,
Boštjan Glavič
SIQ



From: Amund Westin 
Sent: Thursday, October 27, 2022 7:14 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Clearance components

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Folks,

IEC62368-1 or maybe any standards since it would concern all kind of 
electronics …

  *   Clearance / spacing from a warm component and to nearby components/parts 
that might be combustible, is this categorized as the PIS issues (Potential 
Ignition Source) or is it a different category? In this case, it’s a component 
that dissipate heat, but I assume for sure that the energy is way below the PIS 
15W limit.
  *


Best regards
Amund
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[PSES] Clearance components

[Amund Westin]

Folks,

 

IEC62368-1 or maybe any standards since it would concern all kind of 
electronics … 

*   Clearance / spacing from a warm component and to nearby 
components/parts that might be combustible, is this categorized as the PIS 
issues (Potential Ignition Source) or is it a different category? In this case, 
it’s a component that dissipate heat, but I assume for sure that the energy is 
way below the PIS 15W limit.
*

 

 

Best regards

Amund


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Re: [PSES] IEC 62368-1 ES3/PS3 cold impact test temperature

[Chris]

 Thanks Don.
Do you know at what temperature is the cold impact test done?
Christopher

On Friday, October 21, 2022 at 05:04:33 AM PDT, Don Gies 
 wrote:  
 
 
Christopher,
 
  
 
Per Annex Y.6, you have to consider performing the cold impact tests on 
polymeric outdoor enclosures housing class 3 energy sources.
 
  
 
Best regards,
 
  
 
| 
Don Gies
  |


  
 
  
 


 
 
 
Folks,
 
  
 
When do we need to do IEC 62368-1 ES3/PS3 cold impact test as per IEC 62368-1 
Third edition.
 
  
 
I was told if EUT is powered by ES3/PS3 then it is required.
 
  
 
any insight will be helpful
 
  
 
Thanks in advance
 
  
 
Christopher
 
  
 


   

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