... and FCC Part 18 spells out the requirements for Industrial, Scientific
and Medical Equipment (ISM)
Terry Whitehouse
Avaya Regulatory Milpitas
(408) 577-7714
-Original Message-
From: RJS [mailto:appro...@minn.net]
Sent: Wednesday, August 01, 2001 1:14 PM
To: Jim Conrad
Cc: Tania
Hi John:
This came up at IEC TC74 WG8 and was the object of several
proposals. We could come to no agreement about whether Class III
included TNV, earth connections, internally generated voltages of
assorted energies, etc., so we dropped the subject. It plays no
Hello:
I received an email from one of my European Associates today stating the
following, in regards to equipment installed in Europe:
The changes that are to take effect in Jan 2002 is nothing new but they
are going to strictly apply the relevant standards that came into force on
Jan 2001.
Hi Kyle:
I have a new product that includes an off the shelf UPS that is rated for
230V ac operation and has an internal single pole circuit breaker on the
mains inlet. We want to target this product world-wide. The UPS presently
is CB and certified to EN60950 european only.
Guys-n-Gals,
Thanks for sharing your knowledge!
Please dont worry about educating me here in the forum.
I have UL1950 3rd ed. 7/1995, but it has no clause 3.4.6.
I do have BSI 50091 :1993, I have the CB for this UPS and skimming/recall
seeing the UL 1448 (?) but I'm short on time to read and
Bob, thanks for that information. I guess the second question would be is
the device required to bear a part 15 complaince label?
This iinformation is very helpful because most of the answers I get from the
authorities indicate Canada's Digital Emission standard ( identical to FCC
Part15) is for
Dear members,
FCC 2.1057 is about radiated emission. They say :If the equipment operates
below 10GHz: to the tenth harmonic of the highest fundamental frequency or to 40
GHz, whichever is lower.
I ask: Highest fundamental frequency, is it the crystall oscillator with
highest frequency or is
95fbd8b0830ed511b7720002a51363f1319...@exw-ks.ks.lsil.com, Ehler, Kyle
keh...@lsil.com inimitably wrote:
Greetings,
I have a new product that includes an off the shelf UPS that is rated for
230V ac operation and has an internal single pole circuit breaker on the
mains inlet.
Please check FCC 15.105 and 15.05 and 15.29 to see the
requirements for medical equipment. In my opinion, those
sections say that medical equipment shall not interfere.
Best Regards
Bob Schlentz
appro...@minn.net
---
This message is from the IEEE EMC
Dear members,
From IEC61000-4-2 and several EN-product standards, they specify the time
between successive discharges to be at least 1 second.
But what is the maximum time between each pulse ? I can not see that it is
stated in any standards. I guess the test labs use 1 pulse pr second.
I
3b683241.1010...@ma.ultranet.com, Robert Johnson
robe...@ma.ultranet.com inimitably wrote:
This came up at IEC TC74 WG8 and was the object of several
proposals. We could come to no agreement about whether Class III
included TNV, earth connections, internally generated voltages of
sb67c5fe@accusort.com, Terry Meck tjm...@accusort.com inimitably
wrote:
I saw the first PCB show up in TVs,
Would you care to put a date on that?
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
This message and its contents are not confidential, privileged
Gentlemen,
I have a copy of IEC 61010-1 2nd edition. I was not aware of the EN
version having been published or listed in the OJ.
Does anyone have any information on the EN version of the 2nd edition to
61010-1.
Regards
Joe Martin
richard.pa...@exgate.tek.com@majordomo.ieee.org on
Kyle,
In UL 60950, Sec. 3.4.6 there is a requirement that all hot lines be
switched off simultaneously. If you are powering your equipment with 240
VAC then in the US there are two hots and a neutral. 120 VAC line to
neutral and 240 VAC line to line. Hence the UL requirement for a two pole
Continuing on the tangent, the attachment from the ESD Association lists
real life events that are dependent on the local environment. Complying
with the regulations keeps our officers out of jail; designing for
robustness keeps our customers happy. We have an internal requirement
within
This came up at IEC TC74 WG8 and was the object of several proposals. We
could come to no agreement about whether Class III included TNV, earth
connections, internally generated voltages of assorted energies, etc.,
so we dropped the subject. It plays no part in the safety requirements
of IEC
This came up at IEC TC74 WG8 and was the object of several proposals. We
could come to no agreement about whether Class III included TNV, earth
connections, internally generated voltages of assorted energies, etc.,
so we dropped the subject. It plays no part in the safety requirements
of IEC
Ask the UL Engineer to specify the paragraph in the standard or PAG that
backs up the demand.
Richard Woods
--
From: Ehler, Kyle [SMTP:keh...@lsil.com]
Sent: Wednesday, August 01, 2001 9:59 AM
To: 'EMC and Safety list'
Subject: Mains fusing
Chris,
The requirements given in NEMA 250 versus UL 50 are virtually the same
(although both are different than IEC 60529). The definitions and test
requirements are very similar for all types (1, 2, 3, 3R, 3S, 4, 4X, 5, 6,
6P, 12, 12K, 13). The big difference comes in the process of using the
I too am not familiar with Japan, but I have a few tidbits to share.
JAMEI (Japan Association of Medical Equipment Industry)
Equipment appears to be approved under the leadership of the Ministry of
Health and Welfare.
Richard Woods
--
From: Nick Williams
KC,
UL is holding a seminar in San Diego on UL 1950/60950. For more
information, visit:
www.ul.com/seminars
Regards,
Randy Flinders
Electromagnetic Compatibility Engineer
Emulex Corporation - We Network Storage
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
(714) 513-8012 Voice
(714) 513-8265 Fax
We have recently dealt with a similar situation, and have concluded that:
At least for NEMA 3R and NEMA 4, Yes, NEMA 250 = UL 50 type. The tests are
worded slightly different.
Yes, you can self certify to NEMA
NEMA vs. UL; NEMA rating shows compliance with tests. UL type shows
compliance with
FCC Part 15 goes far beyond digital devices; carrier
current systems, radio and TV receivers, unlicensed
low-power transmitters, and much, much more.
It gives special treatment to digital devices because
they have proven to need special attention. The exemptions
Part 15 contains exist because
Many analog devices such as smps emit (conduct) terrible noise in the radio
spectrum yet they are exempt. How come? I can cite the supplies for low level
halogen/xenon lighting , exercise treadmills and some computer displays. A
switch is a switch is a switch and anything that breaks current
Greetings,
I have a new product that includes an off the shelf UPS that is rated for
230V ac operation and has an internal single pole circuit breaker on the
mains inlet. We want to target this product world-wide. The UPS presently
is CB and certified to EN60950 european only. For North
Hi Sandy,
I haven't heard of an increase in the requirements of EN 61000-4-2. In
any event, if there was an increase, it would be interesting to note;
but it shouldn't affect your compliance testing for Europe.
Before I go any further, I want to say that there is an exception to
every rule,
Rich:
As always I appreciated your eloquent explanation of the concept of the
creapage requirement. Unfortunately experience has taught me long before your
email.
My question was based on the fact the standard does not SEEM to address the
larger creapage distance 1000 volts. My reasoning
Dear KC,
In general, you will not find complete safety standards on the internet, as
these are typically sold by the international or country safety agencies.
You can use http://www.safetylink.com/ as an excellent directory to many
safety and EMC related websites. If you plan to market an
Nick,
I have a contact in Japan if you need it. I do know that Japan just
approved the 2nd Edition of IEC 60601-1-2 but what I am not sure of is if
JTA requires compliance or what the transition date might be. If you would
like me to look into this, contact me directly.
Best regards,
Jim
Just to add to Tanias comment, all medical electrical equipment is exempt
from part 15.
Jim
-Original Message-
From: owner-emc-p...@majordomo.ieee.org
[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Tania Grant
Sent: Wednesday, August 01, 2001 12:16 AM
To: Doug McKean; EMC-PSTC
Rich,
Interesting info about how arcs form across PCBs, wish I had knew this a few
years back. In this case I had a situation where PSUs were being taken down by
fabric form ESD coats. The general non conductive cotton and polyester was
settling between comports
and an occasional, very
KC Hi!
Try http://www.i-spec.com
PETER S. MERGUERIAN
Technical Director
I.T.L. (Product Testing) Ltd.
26 Hacharoshet St., POB 211
Or Yehuda 60251, Israel
Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019
Mobile: + 972-(0)54-838175
-Original Message-
From: KC CHAN [PDD]
Doug, et al,
FCC Part 15 addresses digital devices only. And they continue to use the term
digital over and over again. The scope of FCC Part 15 does not address
analog devices, whether they be industrial, commercial, or medical test
equipment. However, the FCC are exempting (and some
Santo,
To follow up on the second half of the question that Jim answered, in
Colorado the voltage level requirements are quite realistic. At low
humidity, like we get here in the winter, 10kV discharges are not that far
out on the probability curve. If I remember correctly, in a study at HP in
Hi Santo,
You didn't say what type of products you are making but for Medical
Electrical Equipment complying with the 2nd ED of 60601-1-2 it will be 8 kV
air and 6 kV contact.
Best regards,
Jim
-Original Message-
From: owner-emc-p...@majordomo.ieee.org
I'm looking for some feedback on NEMA versus UL type - environmental ratings
for faceplates of panel mounted components.
a.. First reality check - Are NEMA housing ratings = UL type, number by
number?
b.. Second - Can one self certify compliance to NEMA ratings?
c.. Third - What is the
Hello KC,
A) Visit the Safety Link www.safetylink.com and check the subsection
titled, Safety Articles, FAQs, MRAs, etc.
B) While at the Safety Link, take a look at the bookshop link (near the
top of the page).
Regards, Art Michael, Webmaster - The Safety Link
Int'l Product Safety News
A.E.
I've been asked if I know what the regime is for medical devices in
Japan. I don't know anything about this, but if there's anyone out
there who can give me a brief idea or possibly even some URLs to look
at, I'd be grateful.
Anyone in the business of providing consultancy in this area
John
Do you know the full name of Com-Power or its www address?
Thank You
KC Chan
jestuckey jestuc...@micron.com 06/29/01 12:43am
Com-Power 2122Pre-amp 500 MHz to 22 GHz $6,500.00
PA-122
Very flat response curve. I have been very happy with mine.
Regards,
JOHN E.
Members
I am responsible for EMC stuff, but I need to know something about Safety.
Could anyone advises some good reference materials from the internet about
safety? such as basic concept, definitions, EN60065, EN60950 and UL.
Thank you
KC Chan
---
Price, Ed wrote:
Doug:
The rationale that I recall is that test equipment is expected to be
used by
people who understand the nature of electrical measurements and
safety.
These people will have the knowledge and resources, beyond those of
a
typical consumer, to recognize and ameliorate
-Original Message-
From: Doug McKean [mailto:dmck...@corp.auspex.com]
Sent: Tuesday, July 31, 2001 11:58 AM
To: EMC-PSTC Discussion Group
Subject: Test Equipment ...
Why or what is the reasoning behind test equipment
being exempt from all sorts of testing that's required
for
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