Paolo, EN60721-3-2 provides figures for a multitude of transportation environments. However, for your particular problem, a great deal depends on the specification of the trolley. There is a huge difference between a trolley with hard wheels and one with pneumatic tyres. With pneumatic tyres a reasonable road surface is almost benign, whereas with hard wheels a ride on a trolley can be worse than the floor of a rally car on a special stage! More damage is caused to some electronic equipment by poor handling during manufacture than throughout the remainder of its lifecycle. If you are addressing a specific application as opposed to determining general suitability for this means of transport, then it could be worth your while using a data recorder to measure the actual environment that your equipment will experience. Attach the recorder to a loaded trolley and push it around for a while; you will soon have more data than you can handle!
Best regards, Neil R. Barker C.Eng. MIEE MIEEE MSEE Manager Compliance Engineering e2v technologies ltd 106 Waterhouse Lane Chelmsford Essex CM1 2QU UK Tel: +44 (0)1245 453616 Fax: +44 (0)1245 453410 e-mail: [email protected] Web: http://www.e2vtechnologies.com From: Paolo Peruzzi [mailto:[email protected]] Sent: 09 March 2004 09:23 To: [email protected] Subject: vibration test Dear all, I'm planning a vibration test in order to simulate a transportation af a trolley at a typical walking speed (1-6 km/h) over a road surface (I suppose an internal building floor is a less critical environment). Could anyone tell me where I can find a rationale to set the test parameters (acceleration amplitude and frequency spectrum, test duration)? I have the MIL STD 810 F curves for reference, but they seem to be not very appropriate for this particular application. thanks, Paolo ************************************************** Paolo Peruzzi Esaote S.p.A. Research & Product Development - Design Quality Control via di Caciolle, 15 I- 50127 Florence tel: +39 055 4229469 fax: +39 055 4229422 e-mail: [email protected] ************************************************** This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
