-Original Message-
From: Bandele Adepoju [mailto:badep...@jetstream.com]
Sent: Friday, September 01, 2000 12:08 PM
To: 'Ken Javor'
Cc: emc-p...@ieee.org; 'ricklinf...@phobos.com'; jestuckey
Subject: RE: Vibration and Shock Testing
...Regardless, I still feel the same
-Original Message-
From: lfresea...@aol.com [mailto:lfresea...@aol.com]
Sent: Friday, September 01, 2000 10:42 AM
To: emc-p...@majordomo.ieee.org
Subject: Used Equipment
Hi all,
I'm trying to get a rough idea how much some used equipment
I've been offered is worth.
-Original Message-
From: Mike Morrow [mailto:mi...@ucentric.com]
Sent: Thursday, August 31, 2000 10:40 AM
To: EMC Society
Subject: Why routine hipot is required.
I've been asked why a routine hipot test is required on an
end assembly
computer when it uses a Listed power
Mike,
I have in the past had UL/CSA hi-pot testing waived for
the production line testing of the end product based on
the specific method of installation of the power supply
in the end product.
Bandele
Jetstream Communications, Inc.
badep...@jetstream.com
-Original Message-
Mike,
In my experience, the purpose of the end-assembly, 100% mfg. hi-pot test is
to check the integrity of the electrical connections and of the required
isolation levels. On the manufacturing end, any number of events can create
a disturbance in the insulation of the product. These can often
...Regardless, I still feel the same about DoD Compliance
(EMC, Environmental etc.,) overall today as I felt about
it in the yesteryear - it is a bureaucratic maze cluttered
with US Government jargon and disdain to the intelligence
of the rest of the world. (For some reason, the expression
-Original Message-
From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: Thursday, August 31, 2000 8:04 PM
To: jestuckey; 'ricklinf...@phobos.com'; emc-p...@ieee.org
Subject: Re: Vibration and Shock Testing
A general philosophical response to Mr. Stuckey's specific
Hi Mike:
I've been asked why a routine hipot test is required on an end assembly
computer when it uses a Listed power supply that has already been hipot
tested. So far I don't like the way I've worded my response. Basically
what I've said is that a power supply is approved as a
Basically - high potential testing is a means to check the integrity
(safety) of the wiring/components and construction used in the front end
before the power supplies. I have two free publications, from two
companies that manufacture high potential testers, that explain the process
and needs
Hi all,
I'm trying to get a rough idea how much some used equipment I've been offered
is worth. Anyone an opinion?
10 microfarad caps ( fair condition )
50 microhenry LISN ( well used... )
Monopole antenna, untouched since 1991...
EFS 1 and EFS 3 Field meters with leveling preamps.
Thanks,
Mike, I made the same mistake. The power supply was recognized.
- Original Message -
From: Pryor McGinnis c...@prodigy.net
To: Mike Morrow mi...@ucentric.com; EMC Society
emc-p...@majordomo.ieee.org
Sent: Friday, September 01, 2000 12:31 PM
Subject: Re: Why routine hipot is required.
Mike,
I have had instances on the manufacturing line were the unit would fail the
Hipot or Ground Bond test. The same holds true. The power supply is an
approved part and was tested by the power supply house. With this
information alone I would recommend doing the tests on the end product.
Josh
Mike:
Here's the beef.
The hi-pot test on the completed assembly, or final product, should be done
as close as possible to the point of production where the product is boxed
up for shipping and/or storage.
The purpose of this is to try and find a defect in the primary side of the
product
Mike,
During Hi-pot testing, in addition to punctured wiring insulation and
blatant mis-wiring, I have experienced failures due to faulty/broken
components recognized power supplies used inthe equipment.
Therefore I am all for it . . . .
John Juhasz
Fiber Options
Bohemia, NY
-Original
Mike,
The global safety standards for ITE require an electric strength test
per section 5.3. This applies to the entire assembly as certilisted.
Section 5.3.2 describes the type test necessary for certification.
IEC 60950, nor its counterparts, explicitly state that production hi-
pot testing
Mike,
Back in my days as Compliance Engineer for ATT Global Information Solutions
(NCR), I was successful in obtaining UL/CSA waiver for production line hipot
testing of the end product on the basis of using a listed power supply that
had already been subjected to hipot as a part of the power
I don't know if there is a government regulation, but some shipping
companies do have requirements for heavy packages. UPS requires special
marking for packages over 70 pounds (31.5 kg.) For packages over this
weight, two people may be used to lift the package. If one person feels
comfortable
Bandele -
Please forgive an ignorant question:
I'm not going to pretend to be an EMC standards expert, but I fail to see
how the presence or absence of processing an incoming signal has anything to
do with whether there is a direct or indirect connection to outside lines.
To wit: outside is
Hello All... I've attached ISTA's list of test labs (listed by state) for
your reference.
Enjoy!
George
-Original Message-
From: Matthew Meehan [mailto:mee...@i-kk.co.jp]
Sent: Thursday, September 28, 2000 8:43 PM
To: emc-p...@ieee.org
Subject: RE: Vibration and Shock Testing
Rick,
For our medical equipment we have used ASTM D4169-96 D4728-95 and most
recently ISTA Procedure 1 1A. The ISTA appears to be the more universally
accepted standard.
Good Luck!
-Original Message-
From: ricklinf...@phobos.com [mailto:ricklinf...@phobos.com]
Sent: Thursday, August 31,
...and what do slugs and snails have to do with circuit
prototyping, debugging, or EMC work?
Have you ever had a need for copper foil tape on short
notice for circuit prototyping, debugging, or EMC work? This
month's technical tidbit is on a source of such material,
the local hardware store.
Rick,
Try the IEC 60068 series. You'll need part 1 (IEC 60068-1)
and an appropriate part 2.
Warning! May cause drowsiness.
Do not operate heavy machinery while reading.
IEC 60068-2-47 (1999-10)
Environmental testing - Part 2-47: Test methods - Mounting of components,
equipment
and other
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