Derek,
Not sure if there are any entry modules with MOV's; check
www.interpower.com. You might even talk to those folks for more info.
From my past life I remember that MOV's have a measurable leakage
current. This current degrades the device with life and the leakage current
continues to increase. This can result in overheating and/or fire as the
end of life event. Many applications use a gas discharge tube in series
with the MOV to stop the leakage current and, thus, the degradation.
GE used to have a MOV handbook with a lot of good stuff in it; not
sure if it is still available.
Finally, undersized MOV's can explode under a very large fault
current. This can be hazardous under some conditions.
br, Pete
Peter E Perkins, PE
Principal Product Safety & Regulatory Consultant
Tigard, ORe 97281-3427
503/452-1201 fone/fax
[email protected]
-
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
<[email protected]>
All emc-pstc postings are archived and searchable on the web at:
http://www.ieeecommunities.org/emc-pstc
Graphics (in well-used formats), large files, etc. can be posted to that URL.
Website: http://www.ieee-pses.org/
Instructions: http://listserv.ieee.org/request/user-guide.html
List rules: http://www.ieee-pses.org/listrules.html
For help, send mail to the list administrators:
Scott Douglas <[email protected]>
Mike Cantwell <[email protected]>
For policy questions, send mail to:
Jim Bacher: <[email protected]>
David Heald: <[email protected]>
