CE enforcement

Hello everyone, I need some "horror stories" on enforcement in Europe (to help convince some managers we really have to comply). Anything new in this area? thanks in advance, Moshe Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 972-54-

voltage on Neutral line

Hello everyone, What voltages can I expect on the Neutral (referenced to ground) line in various countries and connection systems? Is there a limit on how high the voltage may be, both in normal and fault conditions? thanks in advance, Moshe Name:

RE: FCC part 15 text (part 18 too?)

Is the same labeling applicabler to part 18 ? thanks in advance Moshe Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 972-52-941200 Telefax: 972-3-5496369 List-Post: emc-pstc@listserv.ieee.org Date: 12/4/99 Time: 22:35:17 You are most welco

UL 1581

Hello everyone, Can someone enlighten me about this standard? Is it related to cables - flammability? How is it related to other standards? thanks, Moshe Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 972-52-941200 Telefax: 972-3-549636

High voltage fuse and holder

Hello everyone, I need fuses and fuse holders for 10kV line. Can someone tell me who is making these (or what are other altenatives to current limiting on high voltage lines)? thanks in advance, moshe Name: moshe valdman E-mail: mvald...@netvision.ne

LED safety

Hello everyone, Can someone enlighten me on the status of safety of using LED's as indicators. Are they still to be suspected as radiation sources (60825) and what should I do in the design (?) to prove them safe? thanks in advance, Moshe Name: mos

RE: FCC exemptions

Thanks Lyle and everyone, The answer seems to be not in part 18 but in the detail of the OET document. It seems the intention was to exempt "maintenance, research, evaluation, simulation, and other analytical or scientific applications". Whatever that might mean. In some cases the same device

FCC exemptions

Hello everyone, 47CFR part 15 (15.103 item C) states that "A digital device used exclusively as industrial, commercial, or medical equipment" is "exempt from the specific technical standards". 1. Can someone give a rational explanation to this exemption? 2. I have an industrial product which

Mains/emergency labels

Hello everone, I have a question related to products under the machinery directive: We have a mains switch and an emergency switch on a machine. The testing agency insists these should be marked in words near the switches. (Of course that would be a different marking in every geopgraphical lo

UL equivalent to the Machinery Directive?

Hello everyone, I have a product which was CE marked for safety according to the machinery directive. What would the UL equivalent be? The product is a semi manual inspection station, used by an operator at a PCB (bare board) manufacturer plant. The PC panel is placed on an automatically movi

Suppressor - ungrounded (more clarification)

Hello again, In a telecommunication device I need to connect a transient suppressor from the phone line to the metal chassis, which is not safety grounded. (I believe this is defined a class II device). In response to "where will the transient go?": the assumption is the chassis has enough

RE: Suppressor - ungrounded (clarification)

In response to "where will the transient go?", ofcourse the assumption is the chassis has enough capacitance to ground (and possibly some conductance which cannot be relied upon for safety purposes), so that the transient suppressor is effective. At least that's how I understand it. Moshe -

Suppressor - ungrounded

Hello everyone, In a telecommunication device I need to connect a transient suppressor from the phone line to the metal chassis, which is not safety grounded. (I believe this is defined a class II device). Are there any special considerations / limitations in this condition? thanks in advance

machinery directive related questions

Hello Everyone, here are 2 questions: 1. Is Risk/hazard Analysis required as part of formal documentation (TCF?). Which standard defines the format of the analysis? 2. The machine complies with ESD (up to 8KV) immunity, but still I have safety related incidents at customer sites, which are o

isolation of battery (72V max) input

Hello everyone, What are creepage/clearance requirements between battery (60V nominal which could go to 72V) conductors and SELV conductors? The equipment resides in "CO like" environment. thanks in advance, Moshe Name: moshe valdman E-mail: mvald...

EMC requirements for cellular site equipment

Hello Everyone, I'm looking for the list of standards relevent for EMC of a piece of equipment residing in a cellular phone site. It is not connected to phone lines, just to "inside the room" monitoring (e.g. battery voltage, temperature etc). It is powered from battery power. What would be EM

GR1089

Hello everyone, Where can I get the text (or a summary) of the GR1089? Is it available on the Web? I would think the customer (bell?) would have an interest to post it on the web for every potential supplier(?) thanks in advance Moshe Name: moshe v

cellular phone supply system

Hello everyone, I'm trying to find out which regulations are applicable to a system which is located in cellular phone antenna sites. The system is used for charging the batteries (48V, several hundred amps), and monitoring generally the status in the site (e.g. temperature, battery status).

Y capacitors on 60VDC supply

Hello everyone, I need to put capacitors to gnd on the 60VDC nominal (could go up to 74V) supply inputs of a box located inside a CO. I assume, since the 60V is to be isolated from the low voltage and ground, and since it is a "mains" input, I need Y capacitors. My questions: 1. Does these ne

IEC1010 / UL3101 - components

Hello Everyone, Thanks for your replies on the IEC1010 thread. I have some more questions: 1. What would be required (by UL and CSA) from components (capacitors, resistors) bridging BASIC INSULATION? Should they be "high integrity" even though if they fail (single fault) there's still ground

FW: Fwd[2]:UPS specs

Sorry if you get this message twice. I did not receive it back from the list-server, so I guess it just didn't come through. -- Hello everyone, I am using an APC SmartUPS 1400RM (its a 1400VA 950W 110V/220V unit which has either 4

FW: Fwd:EN61326 relative to ISM and ITE

Sorry for repeating myself, it seems my first message was lost Hello everyone, Does anyone have experience with testing to the new EMC standard for lab equipment. Are radiated emissions different from ISM and ITE standards? When does it come into force? Would you recommend choosing this standar

RE: CENELEC's Website Is Online

Hello everyone, It seems CENELEC's web site is a closed club (?). If this is indeed the situation I think we should all express our opinion of how stupid and useless such a site is. - Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 052-941200, 0

modeling RFI sources "randomness"

Hello everyone, As we know, while measuring RFI generated from a product at a specific frequency, we get randomly changing amplitude (and I guess phase is also changing with time). This is why "peak", "average" and "quai-peak" are different. On the other hand, the sources of interference (e.g

[no subject]

Hello everyone, I'm looking for a leakage tester which can measure the low currents of the medical standards (e.g. 601) Can you suggest one (including manufacturer, approximate cost, service quality etc) thanks - Name: moshe valdman E-mail: mvald...@netvisio

Consultant "code of conduct"

Hello all, Many of us are full (or part time) consultants. Maybe you have come across a document which could be called "10 commandments of a consultant" or "Consultant ethics" etc. Do you think there should be such a guide, and if so, do you think you could contribute to its contents? (I'm ob

reduction of leakage current

Hello all, Assuming the power supplies and line filter I'm using cannot be changed, and I have to reduce the input leakage current to ground, what are my options? (if any) thanks in advance - Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 052-94

RE: Interlock - PCB Spacings -- OPINION PLEASE

Yisrael, 1. I guess the main issue here is reliability: i.e. can it be proven that a certain spacing or PCB construction can lead to a reliability high enough for an interlock? Is this correct? If so, maybe someone can supply numbers to expected reliability of PC traces. I would suspect the

RE: max. case temp. and burn injury risk

Arlen, the major standards (IEC 950, IEC 1010) contain max temp requirement for operator accessible parts. The temp depends on the part material: a heat conductive part (e.g. metal) would be required to be at a lower temperature than a plastic part. If you have the specific details I'll get

FW: 950 amendment 4

Sorry if I'm repeating myself, I think this didn't get through the previous time. Hello again, as we know, IEC950 amendment 4 is out for some time. Can someone please send a note of the changes (DELTA) it contains relative to the previous version? thanks -

FW: RFI receiver

It seems this didn't go through the first time (sorry if you already got it) Hello everyone, I've been offered a used "ICOM IC - R1" receiver. I want to use it for preliminary radiated evaluation. (Just to know if I have emissions in certain frequencies) Does anyone have experience with it? Can

950 amendment 4

Hello again, as we know, IEC950 amendment 4 is out for some time. Can someone please send a note of the changes (DELTA) it contains relative to the previous version? thanks - Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 052-941200, 03-5496369

RFI receiver

Hello everyone, I've been offered a used "ICOM IC - R1" receiver. I want to use it for preliminary radiated evaluation. (Just to know if I have emissions in certain frequencies) Does anyone have experience with it? Can this receiver do the job? How much should it cost? thanks --

frequency scanner for EMC

Hello everyone, (sorry if the message is repeated unnecessarily) I'm interested in using a frequency scanner as a low cost EMI sniffer. Where can I buy one? (I would probably have to do this through mail order/web order) Can someone recommend a source? thanks in advance

machinery directive forum / list server

Hello everyone, does anyone know about a an information source/list server specialising in the machinery directive? Do not be offended, but I did receive a considerable amount of information re ergonomics from a (non emc-pstc) guy who works with the machinery directive. No one referred to th

IEC - 1326 -1 EMC for lab equipment?

Hello everyone, I found reference to this number (IEC 1326-1) as an EMC standard which is specific to lab equipment (i.e. to the kind of equipment which has IEC 1010 safety standard) Does it have an EN number? Does anyone have more information on this? thanks in advance

harmonics for high current equipment

(Sorry, I think I already mailed this once without a heading). I am dealing with a high powered system (in development):3 phase and close to 16 Amp per phase (probably less but maybe more) 1. What are the implications for line harmonics requirements in Europe? Which standards and when are th

ergonomic standards

Hello everyone, I got some pointers to standards and managed to browse through some of the ISO 9241-x This is a new one (1996) The title is: Ergonomic requirements for office work with VDT's It covers many aspects of working in front of a computer including operator-software interface,VDT, form

Acoustical noise - summary and more questions

Hello everyone, thanks for pointing me to standards in this area. I did some reading and here is a summary: ISO 7779 Acoustics-measurement of airborne noise emitted by computer & business equipment.: deals with HOW TO MEASURE (free field, reverberation room, sound pressure a

re: Leakage Current

Could an isolation transformer solve such a situaton? - Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 052-941200, 03-5496369 List-Post: emc-pstc@listserv.ieee.org Date: 17/04/97 Time: 23:09:26 -

FW: RE: Ergonomic requirements

What is the significance of "legal requirement in Germany" at a time that all EC countries are required to accept CE marked products? Are there many manufacturers who still apply TUV or VDE marks?(for products which only require self declaration). What would be the motivation to do this? thank

Ergonomic requirements

Hello everyone, does anyone happen to know where I can find information on ergonomics standards? (e.g. EN 614 ?) Which directives/standards require ergonomic issues? (I recall TUV used to require some "color of product" and "size of letters" but these are probably no longer relevant in the times

Acoustic noise requirements

Hello again, I happened to find acoustic noise limits in the IEC 1010-1 (lab equipment safety). Do you know of other standards \ directives with acoustic limits? Are there standard ways of measurement? (sound power, sound pressure, spectrum..) thanks - Name:

[no subject]

Hello everybody, I hope I'm not repeating myself (seems my previous mail got lost). Does anyone have a list of UL standards which cover the types of machinery which are covered by the EU Machinery Directive? Does the UL3101 (iec 1010)-(lab equipment) come under the LVD or the Machinery directiv

FW: RE: Taiwan EMC update

Sorry, I'm resending this. It seems it didn't go through. ---Original Message--- Hello everyone, the info about Taiwan is very interesting. Can you please also specify re the levels (i.e. do they require class A or class B for ITE)? thanks ---

FW: RE: IEC1000-3-2 (SMPS)

Hello Fred, it would help to get some more details: like what power are these power supplies using. If it's low enough maybe they are exempt. Also, what type of waveshape do you have? Can you avoid the class D? Several months ago there was some discussion here on ways to "cheat" on the harmoni

RE: IEC1000-3-2 (SMPS)

Hello Fred, it would help to get some more details: like what power are these power supplies using. If it's low enough maybe they are exempt. Also, what type of waveshape do you have? Can you avoid the class D? Several months ago there was some discussion here on ways to "cheat" on the harmoni

testing lab - standards\ethics

Hello everyone, I would like your opinion (based both on your knowledge of the iso25/iso45001 and personal experience and view) on the "certification\testing lab anomaly". The issue is this: if one entity (let's call it the "LAB") offers both to consult and fix technical problems AND to test an

Thailand EMC labs

Teddy, I looked a little further into the last VCCI report (page 20) and it has some info on the subject. In short: 1. You may contact Dr. Yothin Premparaneerch director NECTEC room 426 CRSC bldg. KMTL, Ladkrabang Bangkok 10520 tel:+66-2-326-9985 fax:+66-2-326-7339 2. The VCCI report seems to

RE: IEC 801-3 question

Hello JC, I started a debate on the emc-pstc about this issue about a year ago. I am not sure if there is a consensus about this issue. Some say: you shouldn't discharge to the pins, they would normally be covered by connector hoods anyway, and if not then the user should be instructed not to

ADSL or Voice_over_IP devices Telcom regulation

Hello everyone, does anyone know what's the procedure for becoming an assessor for the Medical Directives? Does this require a direct connection to one of the notified bodies? I'd be glad to get any info on this subject. thanks moshe valdman