Re: [PSES] Surge Suppression - Dos, and Don'ts

[Brent DeWitt]

In my college summers, I worked as a radio technician for the Sierra National 
Forest in California.  To make a _very_ long set of stories short, the behavior 
of high altitude lightning and antennas cannot be predicted, only analyzed 
after the fact.

 

Brent DeWitt, AB1LF

Milford, MA

 

From: John Woodgate [mailto:jmw1...@btinternet.com] 
Sent: Wednesday, August 30, 2017 4:23 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Surge Suppression - Dos, and Don'ts

 

There's noah way to prevent such arking.

 

With best wishes John Woodgate

3 Bramfield Road East, RAYLEIGH Essex SS6 8RG UK OOO – Own Opinions Only

  www.jmwa.demon.co.uk J M Woodgate and 
Associates 

 

Beware averages! They hide or discard data, and may distort it (them?).

 

 

From: Jim Bacher [mailto:j.bac...@ieee.org] 
Sent: Wednesday, August 30, 2017 8:43 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG  
Subject: Re: [PSES] Surge Suppression - Dos, and Don'ts

 

Brian, the following is just general lightning info. 

 

Many years ago I posted a story about what can happen when a MOV failed along 
with a improper electrical ground in the service panel and a miss wired 
electrical outlet. It should be findable in the list archive. 

 

Being a ham radio operator at the last house my tower was hit at least once a 
year and would have equipment damage. However once I grounded and bonded things 
correctly, there was no more damage. During the last strike to cause damage, it 
arked over between all three wires going to the radios, but not at the same 
outlet. I had a two to 6 plug outlet plugged into the wall. It arked on the 
wall outlet and on the front surface of the multiple outlet device. It just 
about permanently welded the two items together. So as Rich said there are 
things that limit the voltages. 

 

What I have learned over the years, it is how the building is grounded and how 
the grounds are bonded together that makes the difference in equipment survival 
of a lightning strike. It is far more important than equipment design to 
survive lightning. 

 

A good book on proper grounding and bonding was just published by the ARRL. It 
is called Grounding and Bonding for the Radio Amateur. It also happens to have 
safety related information in it. 

Jim 

-


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  > 

-


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  > 


-

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 

Re: [PSES] Outsource Manufacturing Supplier Certs

[Brian O'Connell]

Can be rather messy to track materials traceability for all critical stuff. A 
better solution is to use a production site that is also subject to CIG and/or 
a routine factory FUS audit, where they build from drawings that were submitted 
as part of your product assessment process. Out-sourcers (is that a word?) that 
have a QMS typically have a formal process and doc requirements for this.

Also, UL, CSA, et al, have some specific programs for some processes and/or 
material types that will not come from the applicant or the 'recognized' 
vendor. The Klingon High Command requires that all second-source suppliers be 
certified via the Rite of Ascension.

Brian


From: Doug Powell [mailto:doug...@gmail.com] 
Sent: Wednesday, August 30, 2017 4:20 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Outsource Manufacturing Supplier Certs

All,

Does anyone here have experience with outsourcing or contract manufacturing 
function and a program to pass along certificates of the materials used?   I 
know this can be managed and I'm not even certain what a program/process like 
this would be called.  ​For example, when a manufacturer builds subassemblies 
like circuit boards or custom magentics, safety critical materials they use 
must ​be inspected prior to assembly (optocouplers, wire, fuses, connectors, 
etc.).   Evidence of inspection for these materials in the form of certificates 
may need to be passed along when these assemblies are shipped to the end 
manufacturer.

I am interested to learn what points should be considered to monitor this 
process.  

​Thanks, Doug

-- 

Douglas E Powell

doug...@gmail.com
http://www.linkedin.com/in/dougp01

-

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: 

[PSES] Outsource Manufacturing Supplier Certs

[Doug Powell]

All,

Does anyone here have experience with outsourcing or contract manufacturing
function and a program to pass along certificates of the materials used?
I know this can be managed and I'm not even certain what a program/process
like this would be called.  ​For example, when a manufacturer builds
subassemblies like circuit boards or custom magentics, safety critical
materials they use must ​be inspected prior to assembly (optocouplers,
wire, fuses, connectors, etc.).   Evidence of inspection for these
materials in the form of certificates may need to be passed along when
these assemblies are shipped to the end manufacturer.

I am interested to learn what points should be considered to monitor this
process.

​Thanks, Doug

​

-- 

Douglas E Powell

doug...@gmail.com
http://www.linkedin.com/in/dougp01

-

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: 

Re: [PSES] Surge Suppression - Dos, and Don'ts

[John Woodgate]

There's noah way to prevent such arking.
 
With best wishes John Woodgate
3 Bramfield Road East, RAYLEIGH Essex SS6 8RG UK OOO – Own Opinions Only
  www.jmwa.demon.co.uk J M Woodgate and 
Associates 
 
Beware averages! They hide or discard data, and may distort it (them?).
 
 
From: Jim Bacher [mailto:j.bac...@ieee.org] 
Sent: Wednesday, August 30, 2017 8:43 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Surge Suppression - Dos, and Don'ts
 
Brian, the following is just general lightning info. 
 
Many years ago I posted a story about what can happen when a MOV failed along 
with a improper electrical ground in the service panel and a miss wired 
electrical outlet. It should be findable in the list archive. 
 
Being a ham radio operator at the last house my tower was hit at least once a 
year and would have equipment damage. However once I grounded and bonded things 
correctly, there was no more damage. During the last strike to cause damage, it 
arked over between all three wires going to the radios, but not at the same 
outlet. I had a two to 6 plug outlet plugged into the wall. It arked on the 
wall outlet and on the front surface of the multiple outlet device. It just 
about permanently welded the two items together. So as Rich said there are 
things that limit the voltages. 
 
What I have learned over the years, it is how the building is grounded and how 
the grounds are bonded together that makes the difference in equipment survival 
of a lightning strike. It is far more important than equipment design to 
survive lightning. 
 
A good book on proper grounding and bonding was just published by the ARRL. It 
is called Grounding and Bonding for the Radio Amateur. It also happens to have 
safety related information in it. 
Jim 
-

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  > 

-

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: 

Re: [PSES] Surge Suppression - Dos, and Don'ts

[Jim Bacher]

Brian, the following is just general lightning info.

Many years ago I posted a story about what can happen when a MOV failed
along with a improper electrical ground in the service panel and a miss
wired electrical outlet. It should be findable in the list archive.

Being a ham radio operator at the last house my tower was hit at least once
a year and would have equipment damage. However once I grounded and bonded
things correctly, there was no more damage. During the last strike to cause
damage, it arked over between all three wires going to the radios, but not
at the same outlet. I had a two to 6 plug outlet plugged into the wall. It
arked on the wall outlet and on the front surface of the multiple outlet
device. It just about permanently welded the two items together. So as Rich
said there are things that limit the voltages.

What I have learned over the years, it is how the building is grounded and
how the grounds are bonded together that makes the difference in equipment
survival of a lightning strike. It is far more important than equipment
design to survive lightning.

A good book on proper grounding and bonding was just published by the ARRL.
It is called Grounding and Bonding for the Radio Amateur. It also happens
to have safety related information in it.

Jim

-

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: 

Re: [PSES] IEC 62368-1, 3rd edition Final Draft International Standard

[John Woodgate]

It depends on which country you are in. You have to ask your National Standards 
body for a copy, giving reasons.
 
With best wishes John Woodgate
3 Bramfield Road East, RAYLEIGH Essex SS6 8RG UK OOO – Own Opinions Only
  www.jmwa.demon.co.uk J M Woodgate and 
Associates 
 
Beware averages! They hide or discard data, and may distort it (them?).
 
 
From: Vincent Lee [mailto:08e6c8d35910-dmarc-requ...@ieee.org] 
Sent: Wednesday, August 30, 2017 2:23 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] IEC 62368-1, 3rd edition Final Draft International Standard
 
 
Hi all,
 
Good morning,
 
May I know where can I access the IEC 62368-1, 3rd edition Final Draft 
International Standard ?
 
Hope to hear from you soon. 
Thank you a lot.
 
Regards, 
Vincent
-

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  > 

-

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: 

[PSES] IEC 62368-1, 3rd edition Final Draft International Standard

[Vincent Lee]

Hi all,
Good morning,
May I know where can I access the IEC 62368-1, 3rd edition Final Draft 
International Standard ?
Hope to hear from you soon. Thank you a lot. Regards, Vincent

-

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: