logic and chassis in CO's

In the good ol'(bad) maybe days. The CO's enforced an isolated ground bond network. Logic ground, or -48 return lines and chassis ground were separate. The equipment chassis was bonded to the rack and the rack grounded but that was, I believe for power cross protection. But today's

IP54 Testing in Northern California

Dear All, Any labs in Northern California which can test a machinery system to IEC 60529 and IP54 classification? Peter _ Do you Yahoo!? Yahoo! Tax Center http://us.rd.yahoo.c m/finance/mailsig/*http://tax.yahoo.com - File online, calculators, forms, and more

Re: Medical grade PSU and Grounding techniques

Chris, With regard to your questions on EN60601-1: 1. The equivalent UL standard is UL 2601-1, which contains about 40 pages of deviations and then the complete text of IEC 60601-1. 2. I know of no reason related to EN 60601-1 that would cause PS manufacturers to prefer DIN connectors. 3.

Re: Medical grade PSU and Grounding techniques

I read in !emc-pstc that Chris Chileshe chris.chile...@ultronics.com wrote (in 01c2fd1a.6ef19ba0.chris.chile...@ultronics.com) about 'Medical grade PSU and Grounding techniques' on Mon, 7 Apr 2003: I have been looking at commercially available medical grade PSU's and I find the 5-way DIN

re-SAR Testing

Thanks everyone for the help provided. Regards Andy Andrew Price Principal Development Engineer (EMC Specialist) BAE SYSTEMS Avionics A125 Christopher Martin Road Basildon, Essex SS14 3EL tel: +44 (0) 1268 883308 email: andrew.p.pr...@baesystems.com

Medical grade PSU and Grounding techniques

Hello group, I am a novice to medical grade electrical equipment requirements so it is quite likely my query is one that has received responses on this forum time and time again. You will be pleased to note that I received the 'relevant sections' of the standard EN 60601 this morning, and the