Re: How do I do this test?

Hi Vic: > I have a Class 1 product. It has a double insulation barrier between Primary > and earthed SELV, and basic between primary and the metal enclosure. > > How can I perform an electrical strength test across the primary/SELV > barrier? The construction you describe has two

Fw: EN 61010-2-101

- Original Message - From: Konrad Stefanski To: EMC pstc Sent: Monday, December 01, 2003 9:19 PM Subject: EN 61010-2-101 Dear Group Maybe one of You know standard EN 61010-2-101. I would like to ask You if this

EN 61010-2-101

Dear Group Maybe one of You know standard EN 61010-2-101. I would like to ask You if this standard contains EMC requirements? Thank You

RE: IEC 60950 Clause 6 questions

Robert - Please refer to the below. It is assumed you meant to reference CSA/UL60950 for power cross requirements, rather than IEC 60950. It is also assumed you meant Figure 6C, rather than Figure 5C. The below is somewhat stream of consciousness; please forgive the format of the response. >

semi standard users - perfluorocarbons

Folks, I need to start understanding what I am going to need to do when using this material in commercial applications both here and abroad. I've read the MSDS but still doesn't really tell me what precautions I need in the case of a catastrophic failure. Under normal conditions the fluid gets

Overvoltages on coax (was: RE: IEC 60950 Clause 6 questions)

Robert & Ilan - I am breaking my response into parts, to maintain separate foci for each. The subject line is modified for each, as appropriate. Since Robert references Figure 6C (he mistakenly stated 5C) and overvoltage testing of coax connected equipment [Customer Premises Equipment (CPE) wa

RE: 400 Hz filter

From: lfresea...@aol.com [mailto:lfresea...@aol.com] Sent: Thursday, November 27, 2003 6:55 PM To: emc-p...@ieee.org Subject: 400 Hz filter Hi All, looking for a filter for a shield room. Needs to be 400 Hz capable, and good for 230 Vac if possible. Anything above 30 Amps would be good. Anyo

RE: US Modem Safety

This is a multi-part message in MIME format. I am not sure about your agency review, but I have always used the Telcom rated fuses from Raychem (TR600-150)and there has never been a problem. This is based on UL 60950 anex B testing via the flow chart on page 200 and 201. I believe that refers to c

Re: How do I do this test?

Vic, As always, the Devil's in the detail... You are correct in thinking that the requirement is Basic Insulation from a primary circuit and protective earth. However, in this case the 'earthed part' must meet all the requirements of clause 2.6 (if the base standard is taken to be IEC 60950-1).

RE: How do I do this test?

Vic I think that by earthing both the case and the SELV circuit you have lowered the "quality" of the double-insulation barrier to basic insulation because it being bypassed. I say this because, if you lose the external earth connection then the shortest /least protective path for the shock curr

RE: US Modem Safety

Alex, It won't pass the UL (or CSA) overvoltage testing. You need the 600V part for that. Dan From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Alex McNeil Sent: Monday, December 01, 2003 6:00 AM To: emc-p...@majordomo.ieee.org Subject: US Modem Sa

How do I do this test?

Good morning, I have a Class 1 product. It has a double insulation barrier between Primary and earthed SELV, and basic between primary and the metal enclosure. How can I perform an electrical strength test across the primary/SELV barrier? I believe I must disconnect the 'earthed' connection -

US Modem Safety

Hi Colleagues, I intend to use an overcurrent protection device, the Raychem polyswitch TS250-130, on an analogue modem interface for Europe and the US. I know this should be OK for Europe but is the 250V rating (ITU lightning protection to 1.5KV) OK for the US? Kind Regards Alex McNeil Princi

RE: Operation of a Radio Device in the 88-108MHz Frequency Range

In a word or phrase absolutely NO. Forget even trying. Danny Forrest Release Group FLEXTRONICS DESIGN ALTHOFEN Friesacherstrasse 3 A-9330 Althofen Austria +43 4262 2644 main +43 4262 2644 1094 direct +43 4262 2645 1094 fax +43 6646381141 mobile mailto:daniel.forr...@at.flextronics.com