To summarize and conclude this thread:
1. If you ignore all consideration except the rules for CE Marking and the
EMC Directive, and if you have a product family standard that does not call
out any other standards (for example EN61000-3-2), and if that product
family standard has been published i
I don't know if this is what you are after:
MIL-STD-1686B rates ESD sensitivity of class 3 parts, assemblies or equipment
at sensitivity levels ranging from 4000 to 15999 volts. I don't see a subclass
rating (i.e., 3a)
Appendix C of this standard requires testing at 2000 volts for assemblies a
Position:
Compliance Engineer
ITE Equipment
BSEE or equivalent
Familiarity with LAN/WAN technologies
Product Safety
EMI/EMC
Network Attachment
NEBS
Location:
Occam Networks
4183 State Street
Santa Barbara, CA 93110
Company:
Occam Networks is an early stage start up which received initial Series
Hi Richard:
> When a PCB is rated 105C or 130C or whatever, what does that really mean?
> Can I really operate a 130C rated board at a maximum surface temperature of
> 130C for years without being concerned about reliability or safety? Is there
> a relationship between de-rating and r
I was just having that conversation with our PCB design guy, and
here is what I think we know, and its not much.
The 130 degree C temperature is a NRTL imposition on the maximum
continuous temperature of components touching that board, and I believe it
also tends to set the maximu
I think this discussion has bogged down into too much
detail.
Overcurrent protection is required to provide protection
against overheating and fire (and sometimes shock) when
a fault occurs.
For plug-and-socket connected products, a mains fuse is
used to provide protection against LOAD fa
Richard -
Basically, yes, though you may want to throw in a fudge factor to assuage
your caution/due diligence monkey.
FYI: The Maximum Operating Temperature (this is a normal operating condition
temperature) for a PWB is based on accelerated aging testing, and comparing
"as received" performance
Point well taken. You're right, safety is relative.
I think that your message (below) points to the fact that products that are
double line fused should have labeling to say that they are double line
fused (as the clause in EN 60950 that you mention points out) It also
points to the fact that
I'm sure that many of you, as well as myself, under the label of Regulatory
Compliance, receive many issues outside of Safety/EMC. Usually if it has an
acronym, involves a foreign country, falls under the heading of a regulatory
requirement, or sales/marketing don't know who can handle it, it land
Dear Group,
Thank you very much for all the wonderful feedback information from the
emc-pstc group in regards the compliance global issue.
Regards,
Richard
-
Terawave Communications Phone: 510-
Does any one have Mil Std 1686B handy??? Need to compare test levels
between Mil Std 1686B, Class 3a and EN61000-4-2.
Any help will be appreciated.
M. Taylor
Hach Company
Loveland, Colorado
---
This message is from the IEEE EMC Society Product Safety
Techn
When a PCB is rated 105C or 130C or whatever, what does that really mean?
Can I really operate a 130C rated board at a maximum surface temperature of
130C for years without being concerned about reliability or safety? Is there
a relationship between de-rating and reliability or safety?
Richard Wo
Invitation to:
SCV EMC Society Meeting
BLUETOOTH - A Viking King
Tuesday, October 10, 2000
The October Santa Clara Valley EMC Society meeting will be held at SGI in
Mountain View, 1600 Amphitheatre Pkwy., building 40, in the Presentation Center
above the lobby. Dinner will start at 5:30, and the
Here are the CE and CB scheme countries segregated by EFTA, EEA, EU
membership:
Jeffrey Collins
MTS, Principal Compliance Engineer
Ciena Core Switching Division
jcoll...@ciena.com
www.ciena.com
The following is a list of CB countries:
Austria
Australia
Belgium
Canada -
China
Czech R.
Denmark
It seems to be www.cbscheme.org, instead of www.cbscheme.com
-Barry
---
On Tue, 10 October 2000, geor...@lexmark.com wrote:
Go to www.cbscheme.com and click on "Countries"
George
Dear Group,
Where can I get a global agency certification list that showed
Richard -
What is required is approval by any of the individual state's governmental
bodies in Australia. I can't find my list of authorities at the moment, but
perhaps someone else can.
Regards,
Peter L. Tarver, PE
ptar...@nortelnetworks.com
-Original Message-
From: wo...@sensormatic
Chris Maxwell asks: "Can anybody shoot a hole in this theory with a single
fault condition?"
This subject has been debated before, on this list and elsewhere.
Safety is always relative. In the scenarios you painted, Chris, the phase
conductor always has an intact fuse after the neutral fuse open
I thank all those who corrected my posted URL for the CB Scheme!
After 37 years of professional experience, I could claim that the "clock
rate" of the CPU in my head is the same as 1963, but that my fingers
are far faster. Alas, I fear the opposite is the more likely scenario.
George
Richard,
I will pass along what I know, which may not completely answer your
question.
Yes, external power supply "adapters" do require mandatory safety
certification. Since you mention laptop computers, I suggest the
appropriate standard would be that for ITE. Until recently, the
applicable s
That should be "www.cbscheme.org"
-Original Message-
From: geor...@lexmark.com [mailto:geor...@lexmark.com]
Sent: Tuesday, October 10, 2000 7:49 AM
To: r...@terawave.com
Cc: emc-p...@ieee.org
Subject: Re: Compliance Global list information
Go to www.cbscheme.com and click on "Countries
Hi,
The requirement is for "The petroleum spirit to be used for the test is
aliphatic solvent hexane having a maximum aromatics content of 0,1 % by
volume, a kauri-butenol value of 29, an initial boiling point of
approximately 65 °C, a dry point of approximately 69 °C and a mass per unit
volume o
Richard,
For participating countries refer to http://www.cbscheme.org/cbcntris.htm
Regards, Paul J. Smith, Teradyne, Boston
Richard Lee on 10/09/2000 05:54:10 PM
Please respond to Richard Lee
Should be www.cbscheme.org
-Original Message-
From: geor...@lexmark.com [mailto:geor...@lexmark.com]
Sent: Tuesday, October 10, 2000 7:49 AM
To: r...@terawave.com
Cc: emc-p...@ieee.org
Subject: Re: Compliance Global list information
Go to www.cbscheme.com and click on "Countries"
Geor
Several people have requested the information on the R&TTE notification
process we just went through. I tried to post it to the group, but as the
message says below, the zip file was too big (~315K zipped). If anyone is
interested in the forms mentioned below please contact me via email and
I'
Is safety certification mandatory in Australia or New Zealand for external
power supply "adapters" such as the types used with laptop computers? If so,
what is the mandatory safety standard and which agency certifications are
accepted?
Richard Woods
---
Th
Guys and Ladies,
All this talk about Deltas, Wyes, panelboards ... I think we're missing the
point here. For one thing, I assume that we're all talking about fuses
inside a product. I've seen some responses dealing with circuit breakers...
I leave that stuff up to the Electricians. I would ass
Go to www.cbscheme.com and click on "Countries"
George
rlee%terawave@interlock.lexmark.com on 10/09/2000 05:54:10 PM
Please respond to rlee%terawave@interlock.lexmark.com
To: emc-pstc%ieee@interlock.lexmark.com
cc:(bcc: George Alspaugh/Lex/Lexmark)
Subject: Compliance Glo
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