All I'm currently doing a LVD safety assessment for a rack of Radio Communication equipment going onto naval ships and using EN 62368-1
The equipment is powered at 115 60 Hz Clearance distances are based on maximum transient voltages which for normal (shore based) installations is given as 2000 V for 115 V installations per EN 62368-1 clause 5.4.2.2 referencing 5.3.3.2.3 of IEC 60664-1:2007 The 115V AC system on a ship is not subject to the same over voltage transients as land based equipment Google has found US publication S9086-KY-STM-010/CH-320R2<https://fas.org/man/dod-101/sys/ship/nstm/ch320.pdf>, Naval Ships' Technical Manual Chapter 320 Electric Power Distribution Systems Maximum voltage transient of 1000 V on 115 V systems - this is also in MIL-STD-1399-300-1<http://everyspec.com/MIL-STD/MIL-STD-1300-1399/MIL-STD-1399-SECT-300_PART-1_55833/> TABLE II. Characteristics of shipboard electric power systems I'm basically trying to determine the minimum Clearance requirements to be applied so that the client can CE mark the system - is it reasonable to use this 1000V for determining required clearance in Table 11? Or, any reason why it's not reasonable ? Thank you in advance for your thoughts Best regards Charlie Charlie Blackham Sulis Consultants Ltd Mead House Longwater Road Eversley RG27 0NW UK Tel: +44 (0)7946 624317 Email: [email protected]<mailto:[email protected]> Web: https://sulisconsultants.com/ Registered in England and Wales, number 05466247 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
