John,
It appears 60936 may be withdrawn, try EN 132400. In any case, I believe
filters are generally safety certified without use of MOVs, not mandatory. I
have asked vendors to add these to a custom filter and to the requirements of
other product standards such as EN 60950, EN 61010-1 or EN
In message
1064331955-1355731200-cardhu_decombobulator_blackberry.rim.net-118760780
1-@b15.c21.bise6.blackberry, dated Mon, 17 Dec 2012, doug...@gmail.com
writes:
It appears 60936 may be withdrawn, try EN 132400.
I think you have the wrong standard, it's 60939 (multi-part), not 60936
John,
Sorry, typo.
So now I'm not certain I understand what you are asking. Can you clarify?
Doug
Douglas E Powell
http://www.linkedin.com/in/dougp01
http://www.linkedin.com/in/dougp01
-Original Message-
From: John Woodgate j...@jmwa.demon.co.uk
Date: Mon, 17 Dec 2012
In message
1260632493-1355749824-cardhu_decombobulator_blackberry.rim.net-300668403
-@b15.c21.bise6.blackberry, dated Mon, 17 Dec 2012, doug...@gmail.com
writes:
So now I'm not certain I understand what you are asking. Can you
clarify?
Is there anything in the specifications of
Why use a MOV? This is a difficult subject for self and employer - both in
terms of reliability and safety. Probably no other choice because most of my
employer's stuff must operate in other than OV category 1 or 2.
For MTBF or MTTF, there are several Arrhenius-based models where the basis is
I complained (ok, will admit that I whined) too soon, or the squeaky wheel
gets oiled. The good people at UL said this in response to my formal query:
The Second Issue of the UL 1699B Outline of Investigation is currently
under development, and we anticipate its publication during the First
OSHA is currently seeking two experienced electrical engineers to work in
its Nationally Recognized Testing Laboratory (NRTL) program. The incumbent
would conduct in-depth onsite assessments of national and foreign
laboratories seeking recognition as NRTLs, conduct in-depth audits of labs
Dear Regulatory Experts,
I'm searching for a standard or guideline which will provide detailed
information about the internal grounding and bonding of products, and I've had
limited luck in finding anything suiting my purpose. Reviewing a few CSA and UL
standards hasn't been helpful.
Do not know why bonding materials/construction would not be in the scoped
safety standard. My typical refs for reliable bonding construction
requirements/suggestions are:
1. scoped safety standard for the equipment and/or end-use installation.
2. CSA design manual for the scoped standard(s).
3.
Thanks for your help, Brian.
Unfortunately my two equipment standards are not very detailed, this product
has no UL file yet, and my(out of date)copy of CSA 0.4 doesn't add much. Time
to buy more standards!
Could you explain the CSA design manual to me? I have never heard of a design
manual
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