Rich, For guidance I would compare this to the requirements for a Class 2 transformer. The 20 joules compares to an inherently energy limited type. The 240 VA with a fuse compares to the overcurrent protected type. The difference being that the Class 2 transformer is limited to 100 VA and the energy hazard is limited to 240 VA. So to answer your questiion, I would be guided by the same characteristics as a Class 2 transformer with overcurrent protection.
Cheers, Gabriel Roy Hughes Network Systems MD The opinions expressed are those of somebody else's invisible friend. -------------------------------- snip -------------------------------- Hello from San Diego: With regard to IEC 950: ........................................................... 1.2.8.7 HAZARDOUS ENERGY LEVEL: A stored energy level of 20 J or more, or an available continuous power level of 240 VA or more, at a potential of 2 V or more. ........................................................... At what point in time after start of the measurement is the available power considered "continuous"? In the application, a fuse is used to limit the continuous power to less than 240 VA. At 240 VA, the fuse WILL operate -- but it may take up to the maximum fuse operating time. Is this okay? If not, what is the time after which 240 VA is considered to be continuous? Best regards, Rich ------------------------------------------------------------- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329 16399 West Bernardo Drive FAX : 619 655 4979 San Diego, California 92127 e-mail: [email protected] -------------------------------------------------------------
