[PSES] Compliance engineer with 1-2 years experience can also apply, position is in Bay Area

[Chris]

 
We are growing our team at Tarana Wireless and are looking for a compliance 
test engineer to help us with the certification of our licensed and unlicensed 
wireless products.

   
https://taranawireless.applytojob.com/apply/IEFS3nTBjE/Compliance-Test-Engineer

If you like to learn wireless testing and work with our RF design engineers 
this may be a place for you. We design our own RF chip set and our technology 
is one of a kind in Wireless.
Feel free to review our products on line.
Regards
Christopher SaleemRegulatory Compliance managercsal...@taranawireless.com




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Re: [PSES] Surges on Ethernet ports under 62368-1

[Joe Randolph]

Hi Pete:

 

When considering how 62368-1 is applied to an Ethernet cable, it's necessary
to look at how the Ethernet cable is used.  Following is how I interpret
some common examples:

 

1)  Ethernet cable used entirely with a building:  No transient test

2)  PoE cable that goes outside the building to a floating PoE camera:
No transient test

3)  Ethernet cable that connects two separate buildings:  Transient test
(1500 V) applies, common-mode only

 

My reasoning is based mostly on this note from Table 13 in the 3rd Edition:

 



 

Keep in mind that if the Ethernet port complies with the isolation
requirement in 803.3, it will have common mode isolation that is sufficient
to withstand a 1500 V transient.  Most manufacturers' designs meet the 802.3
isolation requirement, but some don't.

 

If your application involves an Ethernet cable that has different ground
references at each end, the 62368-1 isolation test is 1500 V, but experience
has shown this is not always sufficient.  I wrote an article on this topic
in 2017:

 

https://randolph-telecom.com/wp-content/uploads/2021/03/Designing-Ethernet-C
able-Ports-to-Withstand-Lightning-Surges_IN-1300.pdf

 

 

Joe Randolph

Telecom Design Consultant

Randolph Telecom, Inc.

781-721-2848 (USA)

j...@randolph-telecom.com

http://www.randolph-telecom.com

 

-Original Message-
From: Peter Tarver [mailto:ptar...@ieee.org] 
Sent: Friday, July 9, 2021 1:13 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Surges on Ethernet ports under 62368-1

 

Good morning.

 

61368-1, Table 14 (2nd ed) or Table 13 (3rd ed) discusses transients to be
applied to conductors considered external circuits.

 

Whereas in 60950-1, these tests generally applied to conductors falling
under Clauses 6 or 7, the scope of the applicability of the testing appears
to have expanded to include simple IEEE 802.3 circuits that exit a building
structure, which were excluded from such testing under 60950-1 (where ITIC
had dictated to test houses, "thou shalt not place transients on mine
network circuits").

 

As a relative newcomer to 62368-1, I am looking for confirmation that the
above is accurate.

 

 

Regards,

 

Peter Tarver

  ptar...@ieee.org

 

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Re: [PSES] Surges on Ethernet ports under 62368-1

[James Pawson (U3C)]

Hi Peter,

It would align with the guidance in IEC 61000-4-5 for applying surges to 'long 
distance lines and outdoor lines' which would include Ethernet leaving a 
building.

The built in voltage isolation of the Ethernet magnetics handles 1kV surges 
just fine. Main risk is a poorly implemented circuit with insufficient creepage 
or incorrectly rated components (I have seen both) 

Hope some of this ramble was useful
James

 Peter Tarver wrote 

>Good morning.
>
>61368-1, Table 14 (2nd ed) or Table 13 (3rd ed) 
>discusses transients to be applied to conductors 
>considered external circuits.
>
>Whereas in 60950-1, these tests generally applied to 
>conductors falling under Clauses 6 or 7, the scope of 
>the applicability of the testing appears to have 
>expanded to include simple IEEE 802.3 circuits that 
>exit a building structure, which were excluded from 
>such testing under 60950-1 (where ITIC had dictated to 
>test houses, "thou shalt not place transients on mine 
>network circuits").
>
>As a relative newcomer to 62368-1, I am looking for
>confirmation that the above is accurate.
>
>
>Regards,
>
>Peter Tarver
>ptar...@ieee.org
>
>-
>
>This message is from the IEEE Product Safety Engineering Society emc-pstc 
>discussion list. To post a message to the list, send your e-mail to 
>
>
>All emc-pstc postings are archived and searchable on the web at:
>http://www.ieee-pses.org/emc-pstc.html
>
>Attachments are not permitted but the IEEE PSES Online Communities site at 
>http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
>formats), large files, etc.
>
>Website:  http://www.ieee-pses.org/
>Instructions:  http://www.ieee-pses.org/list.html (including how to 
>unsubscribe)
>List rules: http://www.ieee-pses.org/listrules.html
>
>For help, send mail to the list administrators:
>Scott Douglas 
>Mike Cantwell 
>
>For policy questions, send mail to:
>Jim Bacher:  
>David Heald: 


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[PSES] Importing UV-C Disinfecting Device to Australia for Investigational Purpose

[Savino Macias]

Hello experts.
We would like to import a device used for disinfection using UV-C light into 
Australia. At the moment, this will be for investigational use only (we hope to 
enter the Australian market with production units at a later date).
I've been trying to do an internet search for the Australian regulatory body or 
authority having jurisdiction to determine the requirements for importing this 
one unit, but cannot seem to find them.
Do any of you know which Australian government agency I need to contact or know 
the requirements for such an import?

The device has a CB certificate for IEC 61010 and we've done some preliminary 
radiated emissions testing to meet the FCC requirements for the US.
The device does have a Bluetooth module and cellular module.

Thanks, and I look forward to hearing from you all.

Savino Macias

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[PSES] Surges on Ethernet ports under 62368-1

[Peter Tarver]

Good morning.

61368-1, Table 14 (2nd ed) or Table 13 (3rd ed) 
discusses transients to be applied to conductors 
considered external circuits.

Whereas in 60950-1, these tests generally applied to 
conductors falling under Clauses 6 or 7, the scope of 
the applicability of the testing appears to have 
expanded to include simple IEEE 802.3 circuits that 
exit a building structure, which were excluded from 
such testing under 60950-1 (where ITIC had dictated to 
test houses, "thou shalt not place transients on mine 
network circuits").

As a relative newcomer to 62368-1, I am looking for
confirmation that the above is accurate.


Regards,

Peter Tarver
ptar...@ieee.org

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[PSES] DENEN Law/PSE Marking for ac/dc power supplies

[Peter Tarver]

Good morning.

In reviewing the DENAN Law and the METI DENAN Guide (v4.0), there's 
mention of a need to mark the "notifying supplier" (in this case, 
taken as the importer) adjacent to the PSE Mark. This appears to be 
targeted at importers of large quantities of ac/dc power supplies 
for sale to the public.

If taken very conservatively (as Japan tends to be), this would 
apply to all ac/dc power supplies. Does anyone know if this marking 
requirement applies to power supplies that are part of a kit or sold 
as spares?


Regards,

Peter Tarver
ptar...@ieee.org

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