RE: LVD voltage range.

If I remember correctly, Rich Pescatore and others advocated the developement and use of a mark that indicated compliance conformity via the third party certification system. It could be used by any accredited Lab (NRTL, IECEE etc.) and demonstrats to all a continued compliance program as well as

RE: Capacitors to Ground

Hi, I was quoting from the new edition, 3rd, of IEC 60950. But, it does bring up the question of when the EN, UL/CSA versions will be issued. Anyone have the proposed dates? Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail ndev...@entela.com -Ori

RE: UPS standards

Be careful with the '950 reference. EN50091-1 freezes the reference to EN60950 at the 1992 version + the A1 and A2 amendments. It does NOT require/allow the use of more recent versions of '950. Regards, Jim Eichner > Group Leader - Engineering Services > Xantrex Technology Inc. jim.eich...@xan

RE: Re: Taiwan

Brian, BSMI EMC regulations do not apply to Chemical Analysis Equipment. Check out the following URL: < http://www.bsmi.gov.tw/english/emc/e_emc_10.htm > There are no 9027 codes listed. Regards, +=+ |Ronald R. Wellman

More Pollution degree help

Hello Everyone, I have a few co-workers telling me that they have seen a statement saying that if the product enclosure meets IP-53 or better, that you can then qualify as pollution degree II. They cannot, however, tell me the source of this information. Are any of you familiar with this? Than

Ideal World

>George said: >>In the ideal world, there will be one global mark to indicate that the >>product meets all safety, health, EMC, environmental, and other applicable >>standards. The CE mark is virtually this ideal mark, but is only accepted >>within the 15 member states of the European Union and a

RE: Capacitors to Ground

Hi, You might be in trouble, Clause 1.5.6 of IEC 60950, 3rd edition requires Y. See Clause below. Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail ndev...@entela.com 1.5.6 Capacitors in primary circuits A capacitor connected between two line conducto

RE: Capacitors to Ground

Barry, In my company we have occasionally tried to use large capacitance to earth but we not only had the "Y" cap value problem but also increased ground leakage current to unsafe levels. How are you dealing with the leakage issues? Are you trying to solve an EMC noise problem? -doug ==

RE: LVD voltage range.

Hello Folks This may no be completely new for many of you , but for those who make equipment for the European market and wish ce-marking, the voltage limits for supply or external delivered voltages are 50/75 to 1000/1500 Volts (ac/dc) for the LVD. The new to come R&TTE directive will make the 9

Re: LVD Essential Requirement for Radiation Protection

Patrick: I think you might find this definitive paragraph from the "Canadian Broadcaster's Manual on Non Ionizing Radiation" pertintent to your query and which complements other comments received: " Radiation, Ionizing and Non Ionizing ... the energy in an electromagnetic wave increase

Re: Emissions & immunity setup: products with foot pedals

Patrick, most test labs employ test technicians that follow their procedure to the letter, they are not taught to think about the test... I suggest that, since you are responsible for your product, have the lab fully describe the test set-up that you believe should be the correct one in the rep

Re: Emissions & immunity setup: products with foot pedals

Bruce, I would not consider passing in a configuration not used ( foot pedal on the table ), of any use whatsoever The foot pedal being close to ground may entice current along it. It certainly adds the vertical plane antenna that would be there in the application Best regards, Derek.

RE: LVD voltage range.

I agree with Georges comments - We market numerous PC's, Laptop's and Handheld computers, printers, etc. with our devices, as compliance engineer for my company I look for the required marks such as UL,CSA,GS, CE etc. Without these they don't get into our back door - thus not to our customer site,

RE: UPS standards

Our supplier of UPS's test theirs to UL 1778 and certified to CSA Product Class 5311 05 The medical grade version to the earlier UL544 and certified to CSA Product Class 8741 01. They also test their products following UL 1449 which is intended as a guide when testing Transient Voltage Surge Suppr

Re: 3 meter lab

Bonjour de Montreal, In an earlier life I used a spectrum analyser and a very special type of antenna to perform preliminary tests before getting to an OATS. The antenna is called a Bowtop antenna. It has 2 advantages 1) it is very small compare to usual (it has a cylinder shape of 17 cm diameter

Re: Taiwan

BSMI approval for Taiwan is not as bad as it seems. The easiest way to obtain BSMI approval is to work with a laboratory on the BSMI list posted at: http://www.bsmi.gov.tw/english/emc/e_emc_09.htm These labs can perform the EMC testing and take care of the paperwork. The laboratories outside o

RE: Emissions & immunity setup: products with foot pedals

You are absolutely right. A foot pedal is to be placed on the floor. The lab technician may maximize the emissions by finding the worst case location in a TYPICAL application. In other words, he/she can move the foot pedal under the table while resting on the floor and not on the table top.

Re: 3 meter lab

Sounds like your goal is to get an idea of the relative impact that a change makes. For example, you have failed by 4dB at the test house and you want to try to mitigate the problem back at the office. You measure the product as it is, make a change to the product, and measure again for a del

RE: 3 meter lab

Brent, It depends. (Do you cringe when a response begins with "it depends"?). Do you have a lab nearby so that you can establish a baseline for improvement? In the past we developed products with a spectrum analyzer and a couple of antennas in the lab, but you had to get to know your lab (ch

Re: 3 meter lab

Brent wrote: >Our company is contemplating a 3m lab for preliminary emissions scans. We >aren't looking for "submittable" results, but rather, a decent indicator of >whether or not modifications to the EUT improve emissions. In your opinions, I have had great luck with a spectrum analyzer an

RE: UPS stnadards

Kevin, UL 1778 and CSA C22.2 No. 107.1 and 107.2 cover UPS products. EN 50091-1, in case you didn't already know, is to be read in conjunction with EN 60950. Rick Cooper Sr. Project Engineer MET Laboratories, Inc. 410-354-3323 Ext. 331 http://www.metlabs.com/

Taiwan

Hi Group Has anyone had any experience of achieving EMC conformity in Taiwan? By the looks of the paperwork I have it looks a pretty painful process. My main interest lies in the I.S.M. area. Best Regards Brian Harlowe * opinions expressed here are personal and in no way reflect

Re: LVD voltage range.

George said: >In the ideal world, there will be one global mark to indicate that the >product meets all safety, health, EMC, environmental, and other applicable >standards. The CE mark is virtually this ideal mark, but is only accepted >within the 15 member states of the European Union and a fe

Re: Argentina EMC requirements

Approval is required for terminal equipment and equipment using the radio frequency spectrum. This approval is managed through the CNC (Comision Nacional de Comunicaciones). This approval can be granted only to companies based in the country (local presence mandatory to support some obligations). T

RE: LVD voltage range.

Battery powered IT equipment may fall under the scope of IEC60950 but surely there is no European legislation requiring IEC60950 to be applied to such equipment. If the supply is below 75Vdc it is outside the scope of the LVD and the General Product Safety Directive does not mention harmonised st

Re: Surge Test Performance Criterion

It wasn't done derek because there is no requirement that is mandatory. My humble opinion says voluntary standards don't work as well as they should.. Sometimes it requires a resistor to limit the current going to the switch as it obviously rectifies some of the RF. In some cases a bypass capacito

Re: LVD Essential Requirement for Radiation Protection

Ionizing radiation's MAIN effect is ionization of material it interacts with, i.e. it breaks molecular bonds, whereas nonionizing is any other kind of radiation. The classification is not physiological, does not refer to the human tissue, but matter in general. Some non-ionizing radiation can caus

Re: Emissions & immunity setup: products with foot pedals

- putting pedal on table top would be, I think, worst case conditions (as opposed to being on floor), regardless of where it actually sits during use. I think I would test this way just for peace of mind knowing it will comply in this setting. thanks Bruce Patrick Lawler wrote: > I'm having a

re: LVD Essential Requirement for Radiation Protection

Patrick, In general terms "Non-Ionizing" refers to emissions that do not cause damage to human tissue, (RF, Visible Light, ESD Ionization Generators, Etc.), whereas "Ionizing" covers emissions capable of causing damage to human tissue, presumably from gene damage, (X-Rays, High Level Beta, Gamma