On Sun, 5 Jan 1997, Robert Johnson wrote: > Does anyone know any reason why the IEC 320 C-14 connector style cannot > be used for DC power? Specifically, we have an application for primary > power entry in the 48-70 Vdc range, typical of telecom applications, and > I see no clear reason for redesign to implement a different connector. > .... > > Bob Johnson >
I have searched all the standards and other information I have regarding this subject and not found an answer. On talking to test labs and others on the issue, it tends to make them very nervous. The main issue relates to the use of IEC320 appliance couplers (mains cables with IEC320-C14 connectors). These are so freely available and so widely used for mains connection that it is very likely that equipment using a IEC320-C14 connector will be connected to the mains at some time, at least by accident. The products I was concerned with started out as mains equipment which required a 48VDC version. The problem was solved by designing a supply which ran from 35VDC to 264VAC. This made everyone happy. After much effort, I never did get a conclusive answer to using the IEC320 for a 48V only application. Designing a wider range power was a safer(as in less solution risk as well as user risk) solution. Chris Healy Liaison Manager, Standards and Approvals email : [email protected] JNA Telecommunications Limited Ph (direct) : +61 2 9935 5728 16 Smith St, Chatswood, NSW 2067 Fax : +61 2 9417 3862 AUSTRALIA
