On Mon, 30 Sep 1996, Robert Terry wrote: > > I received a recent request from a potential customer for an industrial PC > that meets the following 2 specifications. > > Australian Standard 2380.7-1987 and IEC 79-11.
AS 2380.7 is the standard "Electrical Equipment for Explosive Atmosphere - Explosion Protection Techniques, Part 7 - INTRINSIC SAFETY i" and IEC 79-11 is "Electrical apparatus for explosive atmospheres. Construction and test of intrinsically-safe and associated apparatus" > > I am not familiar with these standards and would appreciate any information > on these standards. Ideally, I would like to know what these standards > cover, as well as how close the US counterparts come to meeting them. Both these standards relate to the design, construction and qualification of equipment that is to be used in explosive atmosphere and is made safe by limiting the amount of energy that can be supplied on circuits through the hazardous area to less than that which could cause an explosion under normal or fault conditions. I would expect this PC is used with equipment in hazardous areas and has some provision for Intrinsically-safe interfaces or the ability to house and earth intrinsically-safe barriers. I don't know the exact US equivalents but I guess this is not what you are looking for anyway. > > For example, if these are product safety standards for ITE, how close does > UL1950 come!! UL1950 and its equivalents are in a totally different area of safety. > Bruce Hunter Engineering Manager Wormald Technology 176 South Creek Road, Dee Why NSW 2099, Australia [email protected] Ph:61(2)9981 0630 Fax 61(2)9971 1759
