CE Approval of equipment utilizing HPMs

I am forwarding this question on behalf of one of our clients. Please forgive the lack of detail in some areas. CE marking is not within the normal scope of my responsibilities, so my awareness of the specific requirements is not great. I would appreciate clarification of some of these issues

Grounding of screen room

Hello group, Can someone tell me what is the best method to find out and ensure that a screen room is adequately grounded? I have access to an screen room for conducted emissions, but I am not sure about its grounding. Any hint is appreciated. Thanks Peter Hays - This message is coming

RE: Grounding of screen room

Our chamber is grounded via the electrical conduit used with the mains power. Never had a problem. -- From: peterh...@aol.com[SMTP:peterh...@aol.com] Reply To: peterh...@aol.com Sent: Tuesday, October 06, 1998 1:56 AM To: emc-p...@majordomo.ieee.org Subject:

R: Grounding of screen room

Just a couriosity: why are you intersted in room grounding ? Is it for safety reasons or for emc purposes ? G.Rossi -- Da: peterh...@aol.com[SMTP:peterh...@aol.com] Inviato: martedì 6 ottobre 1998 6.56 A:emc-p...@majordomo.ieee.org Oggetto: Grounding

RE: CE Approval of equipment utilizing HPMs

Michael, I've been working with CE in the semiconductor industry for about 3 years. Here are some things to look out for. Self declaration to the Machinery Directive is not very complicated. Make sure your client has a response to every one of the essential requirements of Annex 1. It would be

RE: Grounding of screen room

My guess for a first pass is empty it out, put a spectrum analyzer in with a broadband antenna and see if you can 'hear' anything at a level that is near what you are testing for. Cheers, Lauren Crane -Original Message- From: peterh...@aol.com [SMTP:peterh...@aol.com] Sent: Tuesday,

RE: Agency approvals on components in CE mar

Jeff, It is true that a European safety agency approval for critical components may not be required for CE, but please be aware that if you purchase such a component you should check the declaration and be sure the component was tested according to the correct standard with all amendments. You

RE: Grounding of screen room

Hi Peter. I have always isolated my chambers from any sort of building ground and used a separate grounding grid. The ground was measured using a 'ground megger'. Chuck Jackson -- From: peterh...@aol.com[SMTP:peterh...@aol.com] Reply To: peterh...@aol.com Sent: Monday,

South North Korea Russia

Hello Everyone, Does anyone have an idea on what will be the equivalent for the UL 1950 in North, South Korea and in Russia? Do they have a country specific Standard? or they follow the EN60950 ? Your help is highly appreciated. Sarmad Albanna Compliance Engineer Hughes Network Systems

Re: South North Korea Russia

Good Morning, Since South Korea and Russia are members of the CB Scheme I believe they follow IEC-950 (per the provisions of the CB Scheme). Have no information re North Korea. Regards, Art Michael, Editor - Int'l Product Safety News * * * * * * * * * * * * * * * * * * * *

Re: Korea EMC Saffety Certtification of ITE

IBM has 4 Korea government approved labs which were accredited approxi. 7 years ago. There is no other lab in U.S.A. since then. US might go MRA with Korea next year July. I am not sure exact date. Only printer, monitor and AC/CD adaptor are required for Safety Certi. among ITE products.

RE: Grounding of screen room

Ours is grounded to the electrical conduit, as well as through two 8 foot copper rods hammered into the earth. (Similar to ground rods used for the construction on open area test sites.) Regards, Randy Flinders EMC Engineer Emulex Network Systems (714) 513-8012 randall.flind...@emulex.com

Re: South North Korea Russia

In case of South Korea, if you have CB scheme, most of Safety test is waved. North Korea do not have any compliance regulation at the monent I believe. If you have more specific question on Korea Safety, please conatct me. Regards, Ryan Kim -Original Message- From: salba...@hns.com

RE: Grounding of screen room

Peter If you can locate the facility electrical drawings, I would recommend starting with those. It's considered good design practice if you have isolated facility power (air handlers, lights, etc.) and technical power (designated for exclusive use by instrumentation and other equipment requiring

Re[2]: Grounding of screen room

Peter, In a past life, I had control of a screen room with double screened walls. The manufacturer had specified connection of both screens at a single point to a dedicated ground rod. But, it was originally connected to ground via the electrical conduit of the power mains due to

RE: Lab qualification

I am not sure what level of detail that you are looking for, but you might try to look at EN45001/2, and the associated guide for EMC labs that was published in the UK. Another avenue would be to model your format after the NVLAP program. They have a Handbook 150 (general) and 150-x (for

Room grounding

Chaps, The grounding of a shield room has always been a tricky subject. In the US we have the NEC code that basically want's everything connected, which contradicts some EMC requirements. The Shield room hence needs some tricks: 1) One of the functions of the outer skin is to terminate impinging

RE: Grounding of screen room

Hi Lauren, It is my understanding that properly grounding the screen room is important in Conducted emission test and have little effect on Radiated emission test. The way you described is a very good and simple method for evaluating the shielding effectiveness (SE) of the screen room. The