Well, except for the cold inrush current wear. I always left my lights
off when I wasn't working in the chamber. A camera still allowed me to monitor
equipment activity, which was either on a CRT or indicator lights.
Fluorescents can indeed cause a large problem, but generally
All,
Does anyone know of a sample waveform or general characteristics for worst
case VI on an ESD drain pin when a circuit pack is inserted into an
equipment shelf? This is an odd question I know, but my management asked
for the info and I really have no idea (and it shouldn't happen anyway
Hi Folks
Sorry - it's me again.!
'Her Majesty's Stationery Office' (HMSO is NOT the goverment standards
group - it is the official government REGULATIONS publiishing site and is
just like the Government Printing Office (at least, I think that is what it
is called) in Washington etc.
Also, I
Hi Folks
Sorry the first message today was incomplete - here is the full version:
I fully support Nick's observations.
In respect of the comments made by Gert, I would like to point out that
the UK appears to be not the only Member country that has taken advantage of
Article 223 , and those
Hi Folks
I fully support Nick's observations.
In respect of the other comments, the UK is not the only Member country
that has taken advantage of Article 223 , and those countries are Full
members - not half-members - so the comments are unjustiable. Finally, it
should be remembered (as I
I think that another factor in shortening the life of incandescent lights is
the fact that they are usually mounted in a heavy glass protective fixture.
These glass globes offer a bit more safety from physical damage, and also
look nicer than a bare light bulb in a socket. But the light bulb runs
Hello Kevin,
That's correct, we do not have 20 different fire detectors (only 5-6), but
in addition we have some sounders, manual call point, address units, fire
door controllers, etc. And of course the fire alarm panel (control and
indicating equipment).
The cable screen is connected to earth
the CIA website has great descriptions of each country.
Yes, that CIA!!!
http://www.cia.gov/cia/publications/factbook/index.html
--- Stephen Irving sirv...@lutron.com wrote:
Hello everyone.
My name is Steve Irving, and I am new to this forum.
Does anyone know where to find a reliable,
All,
I've had at least three requests for sources on bulbs and possibly more
requests on the way. So I'll reply to the group instead of individually.
By the way, oven, refrigerator, garage door, and drop light bulbs did not
work for me. They were rugged use but apparently not rugged enough. In
Fred,
You raised a good point here by answering Chet's questions. Here is the update
of CNCA accreditation.
Since CCC was initially anounced to be implemented in May, the whole system was
actually not ready at that time even the cost of testing and certification were
not defined until late
Hi Chet,
To get an overview of CCC regulations, download this file:
http://www.siemic.com/Original%20files/CCC%20mark.pdf
I just want to remind you that some other regulation may be applicable to your
products in addition to CCC, particularly, the MPS regulations on security
products. For a
Hello everyone.
My name is Steve Irving, and I am new to this forum.
Does anyone know where to find a reliable, up-to-date list of the official
languages of each country? This list would be useful to people selling products
internationally, as many standards require instructions in the
We have the same frequent burn out problem and we also have attributed it to
the filters. We just keep replacing them. Has anyone tried the rugged bulbs
marketed for use with garage door openers or ceiling fans or have tried the
extended life bulbs? Do they last longer in chamber use to justify
We use four florescent screw-in lights in our 3-metre chamber and detect
some
emission 3dB or so above the noise floor.
Ralph McDiarmid, AScT
Member Technical Staff
Engineering Services
Xantrex Technology Inc.
-Original Message-
From: POWELL, DOUG [mailto:doug.pow...@aei.com]
Sent:
Hi Chet,
The set of documents published by CNCA, the authority that administers the
CCC mark scheme in China, is available in English at:
http://www.typeapproval.com/cn/emc.html
The document labeled Regulations for CPCS.pdf is the overall regulations
guiding the regime. It addresses type
With respect to 'alarm systems' - EN 50130-4 is the applicable technical
standard.
However, 50130-4 refers to the IEC 1000/EN61000 series specs, 'but with
modifications'.
Let's take for instance the 1000-4-5 Surge spec that Amund referenced.
In EN 50130-4, the following is stated:
The test
Hello Listmembers. I am researching the procedures needed to obtain the CCC
mark for shipment of CCTV equipment into China and need some guidance from
those experienced in the process.
First, which Chinese document explicitly mandates type testing within China?
I have read from various
I was just looking through my new copy of IEC61000-3-3:1994+A1:2001 standard.
Under section 1 SCOPE, in the forth paragraph, it refers to the 3-11 standard
this way;
Part 3-11 is applicable to equipment with rated input current less than or
equal to 75 A per phase and subject to conditional
This is a good example of an inarticulate clause in a standard. One sentence
in clause 7.5 reads Normally, the maximum length of the specified shielded
cable shall be used. But the following sentence reads With respect to the
frequency spectrum of the surge 20 m length of the specified shielded
Hmm conferred by the Pope? I thought be generated the CofE in direct
conflict to the Catholic Church...
Best Regards
Charles Grasso
Senior Compliance Engineer
Echostar Communications Corp.
Tel: 303-706-5467
Fax: 303-799-6222
Cell: 303-204-2974
Email: charles.gra...@echostar.com;
Email
Greetings all,
I wanted to share an experience and I hope benefits someone else.
My past experience with shield room lighting is that incandescent bulbs
frequently burn out, about once every 2-3 months. I tried ruggedized lamps
of various sorts, still with the same results. Obviously, I
Her Majesty Queen Elizabeth Second of The United Kingdom of Great
Britain and Northern Ireland (G*d help us); Defender Of The Faith
Funny you should mention that; it relates to certain matters under
discussion here.
Did you know that the first British monarch to bear the title Defender Of
The
I was reading the news.bbc.uk web page today (again). I followed the link
from the Apache helicopters parked in shed due to the lack of pilots story,
this led me to Westland Helicopters. They have a vacancy posted for an EMC
engineer at the HNC+ some experience level.
I wish I could spot jobs in
The UK's position is consistent with the provisions of, inter alia,
article 223 of the Treaty of Rome and is therefore entirely legal.
I shall not dignify the remaining comments by replying to them. They
are unworthy of a forum such as this.
Regards
Nick.
At 07:23 +0100 31/10/02, Gert
But when was the last time you saw a plug rated (just a random example) 250V
3(phase)Y 75A when it means 25A per phase? the 75A rating is definately
'per phase'.
-Original Message-
From: Spencer, David H [mailto:david.spen...@usa.xerox.com]
Sent: Thursday, October 31, 2002 8:16 AM
To:
Not only that but when a King succeeds to the throne it will become His
Majesty's Stationery Office. Yep it is a bit quaint but the organization was up
to date the last time I contacted them.
Your Humble Servant
Ted Rook
A Subject of Her Majesty Queen Elizabeth Second of The United Kingdom of
According to IEC/EN 61000-4-5, the surge pulse shall be injected onto a
screened cable 20 meters from the DUT.
We have a fire alarm system with 20 detectors connected on the same screened
cable, 1.5 meters between each detector. We have been told from the local
test lab that we have to add a 20m
-Original Message-
From: HALL,KEN (HP-Roseville,ex1) [mailto:ken_h...@hp.com]
Sent: Wednesday, October 30, 2002 4:32 PM
To: 'POWELL, DOUG'
Cc: 'g...@microprecision.com'; Emc-Pstc (E-mail)
Subject: RE: Temp/Humidity Meter
Hello,
We buy Radio Shack and others and have them calibrated
I've just looked at all the draft copies of this standard(that I have), and
the older version TR IEC 1000-3-5. Still only says 75amps. Again no per
phase.
I would have to say if TC77A wanted it to say 75A per phase, it would be
in there.
Regards
Dave Spencer
-Original Message-
I believe that the Germans insist on military equipment being CE marked.
UK military equipment needs to comply with Def Stan 59-41 for EMC requirements.
Find it at www.dstan.mod.uk
Luke Turnbull
plaw...@west.net 10/30/02 05:48pm
I have a customer asking for CISPR 22 test results on a
I read in !emc-pstc that plaw...@west.net wrote (in aun0su4ie5qe20vnk5b
p66i32clboe7...@4ax.com) about 'CE marking/testing of military
equipment' on Wed, 30 Oct 2002:
PS: I love the Brits - who else would title the government standards group 'Her
Majesty's Stationery Office'!
It isn't the
Hi Patrick,
This text is British law,en the Uk is only a half member of the EC.
This law is is not backed up by the EMC directive European Text.
It is therefore contradictory to the EC membership requirements
and theoretically illegal.
But who will complain, as it is not creating trade barriers,
And you seem to have forgotten that Schaffner also have products that compete
for these test too Frank. lol
Derek.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at:
Didn't forget at all. there are 7 or 8 manufacturers that can supply
this equipment.
Mike Hopkins
- Original Message -
From: Frank Krozel fr...@electronicinstrument.com
To: Mike Hopkins michael.hopk...@thermo.com; 'Bill Flanigan'
bflani...@ameritherm.com;
I would have expected that the inductance would dominate the branch
impedance at line frequency and its harmonics.
Ralph McDiarmid, AScT
Member Technical Staff
Engineering Services
Xantrex Technology Inc.
www.xantrex.com
-Original Message-
From: John Woodgate
Here are some EXTECH brand meters, somewhat mingled under Moisture Meters
and Thermometers:
http://www.electrical-contractor.net/the_store/EX/HMoisture_Main.htm
http://www.electrical-contractor.net/the_store/EX/Therm_Main.htm
Bill Addiss
At 10:44 AM 10/30/02 -0800, Flinders, Randall wrote:
I did that once. I had been measuring resistance and then needed to measure
ac outlet potential, but forgot to change the meter knob position. Now I
have a new meter.
--
From: Ted Rook t...@crestaudio.com
To: emc-p...@ieee.org
Subject: measuring AC line impedance (:-)
Date: Wed, Oct 30,
Hello,
We buy Radio Shack and others and have them calibrated by MicroPrecision
Regards,
Ken Hall
Hewlett-Packard
http://www.microprecision.com/index.html
-Original Message-
From: POWELL, DOUG [mailto:doug.pow...@aei.com]
Sent: Wednesday, October 30, 2002 2:42 PM
To: 'Flinders,
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