Path: csiph.com!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Don Kuenz Newsgroups: sci.electronics.design Subject: Re: Medical devices and US 220V electrics Date: Wed, 31 May 2017 14:05:25 -0000 (UTC) Organization: A noiseless patient Spider Lines: 60 Distribution: world Message-ID: <201700531a@crcomp.net> References: Injection-Date: Wed, 31 May 2017 14:05:25 -0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="f336df97a9e0c9bc1be50c08e2aff771"; logging-data="11083"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18EWZUYJclfU8ONPoIBS3EN" Cancel-Lock: sha1:bSH2Dk/TG4mPgm69JDaOAsOpM2g= Xref: csiph.com sci.electronics.design:462418 Jim Thompson wrote: > On Thu, 25 May 2017 13:05:28 +0100, RBlack > wrote: > >>Hi, >> >>We are working on a medical product, which will draw about 3 kW from the >>mains. This is new territory for us, all our previous products were a >>few hundred watts max so an off-the-shelf auto-ranging PSU with a >>suitable IEC lead was OK for any country in the world. >> >>3 kW is OK for a standard outlet in 220V countries, but for North >>America, Japan etc we are over the limit for a standard 110V outlet. >> >>I only know as much about US electrical installations as I've read, a >>bit of Googling suggests the product will need a NEMA 6-15 220V outlet. >>But how common are these in hospitals? Anybody have any experience of >>this stuff? >> >>It has been suggested (not by me I hasten to add) that we split the >>loads within the product up and give it two 110V inlets, to get around >>the customer having to install a 'special' outlet for it. This sounds >>like a Really Bad Idea and a regulatory nightmare to me, so if 220V >>outlets are commonly available anyway I can shoot it down before it gets >>too far. >> >>TIA > > This medical device... > > > > is at Ironwood Cancer and Research Centers. > > I don't believe it plugs into an outlet >:-} > > I visit it daily for 15 minutes to get my dose of RAD's. In fact the > form on the table is my personal molded shoulder and head restraint so > > I visit it daily for 15 minutes to get my dose of RAD's. In fact the > form on the table is my personal molded shoulder and head restraint so > I don't try to move ;-) That reminds me of my first job in the industry. We built CAT scanners as shown by the renderings on this page: http://www.preferredpacsconsulting.com/ContactUs.html The rendering in the left panel shows the operator's table. The rightmost device on it is a plain old camera for snapping pictures. Our CAT scanner used 220V. That said, the room that housed it was custom built for it. The room that houses your medical device was probably also custom built for it. Thank you, -- Don Kuenz KB7RPU