IEEE standard C62.41 has a summary of overvoltage data culled from many surveys done world-wide. The surveys (done independent of each other) were done world-wide, covering supply voltages from 120VAC to 480AC.
CENELEC EN50160 supposedly has historical data as well, but I don't have a copy of the document. On Wed, 29 Sep 1999 10:46:42 +0100, ga...@de.ibm.com wrote: >when determining voltages from the mains supply that affect insulation in >equipment typically the rated mains voltage and transient voltages are >considered. >In addition temporary overvoltages resulting usually from earth faults in the >High/Medium voltage distribution system are also present. These voltages >according to IEC 60364-4-442 can reach for a 230 V supply voltage up to 1430 V >r.m.s or 2022 V peak, for a maximum duration of up to 5 seconds and appear >between ground and line. >Voltages of this magnitude and duration could also have an effect on surge >suppression components which might be used within the equipment. >In order to determine the impact of these temporary overvoltages I would like >to >know, if there is data available that shows the frequency, amplitude and >duration of such occurrences. >I have seen statistics of occurrences of transient voltages mainly caused by >switching actions in the supply system or the effect of lightning strikes, but >those transients typically last for a few microseconds. >I appreciate your help in this matter. > >mit freundlichen Gruessen/ best regards >Volker Gasse > >IBM Germany, Technical Relations/Product Safety, >Tel: +49-7031-16-6796, Fax: -6916, e-mail: ga...@de.ibm.com >Mail: D3114/7103-91, D-70548 Stuttgart, Germany -- Patrick Lawler plaw...@west.net --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
