In my opinion, the best approach to "continous" values of a periodic signal is the rms value. For aperiodic signal, the total energy level option should be applied.
======================================================== Juan P. Pena / Electrical Safety Area Company: CETECOM, S.A. (http://www.pta.es/ing/empresas/cetecom.html) e-mail: [email protected] The opinions expressed are personal, not necessarily of my company. ======================================================== ---------- De: Rich Nute[SMTP:[email protected]] Enviado: miércoles 13 de noviembre de 1996 0:46 Para: Product Safety Technical Committee Asunto: How long for continuous? 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] -------------------------------------------------------------
