The 800 lb gorilla should learn to read and check the applicable standard. (assuming 62109 was applicable for that equipment)
And, I thought the only 800 lb gorillas were the electric utilities. ;-)) _______________________________________________________________________________ Ralph McDiarmid | Schneider Electric | Solar Business | CANADA | Regulatory Compliance Engineering From: Pete Perkins <[email protected]> To: [email protected], Date: 08/08/2014 05:47 PM Subject: Re: [PSES] question with regard of inverter Peter, All well and good per IEC 62109 however the 800lb gorilla NRTL assessed the PV DC current monitor assembly (a piece of measurment equipment) to be OV CAT IV when it was assessed for certification. The manufacturer grumbled somewhat (since it wasn't designed for that OV category) but agreed that it was probably appropriate, as did I. :>) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax [email protected] From: Peter Tarver [mailto:[email protected]] Sent: Friday, August 08, 2014 3:47 PM To: [email protected] Subject: Re: [PSES] question with regard of inverter IEC 62109-1 considers “PV circuits in general” to be OVCII. Regards, Peter Tarver From: McDiarmid, Ralph [mailto:[email protected]] Sent: Friday, August 08, 2014 13:57 To: [email protected] Subject: Re: [PSES] question with regard of inverter My understanding as well, namely, OV categorization in power distribution is based on indirect (near-by) lightning strikes. _______________________________________________________________________________ Ralph McDiarmid | Schneider Electric | Solar Business | CANADA | Regulatory Compliance Engineering From: John Woodgate <[email protected]> To: [email protected], Date: 08/06/2014 01:53 PM Subject: Re: [PSES] question with regard of inverter In message <[email protected]>, dated Wed, 6 Aug 2014, Richard Nute <[email protected]> writes: >. Your solar cell DC source is not >subject to load switching, but is subject to a direct lightning >strike. >Your DC OVC due to load switching is zero, and your OVC due to >lightning is beyond OVC IV. Is resistance to a direct lighting strike required of civilian products? I though that only 'indirect strike' was to be resisted, and OVC IV was based on that. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk Quid faciamus nisi sit? John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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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]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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