Thank you all, I feel your comments are pretty close to being on target. I was hoping for simple symbolic way of representing switch position (open/short) and avoid using something that looks like a schematic. The switch we are now using already comes with an embossed "0" and "1" but this is not a power switch and does not power the equipment on and off. In fact the definition of ON and OFF seems a bit ambiguous in this situation as I'm not certain which term would actually apply. That is, does ON mean the short is active or does ON mean the equipment can be turned on? The LOTO idea is worth considering, in most cases this shorting switch is used at the same time as the main power lockout. Possibly a padlock symbol for open and closed may the way? These suggestions will be helpful as I work with my agency engineer to come up with some kind of answer.
All the best, Doug Douglas E Powell Laporte, Colorado USA [email protected] http://www.linkedin.com/in/dougp01 On Tue, Oct 11, 2016 at 11:51 AM, Mike Sherman ----- Original Message ----- <[email protected]> wrote: > Application sounds like "lock out tag out. " Might offer another way to > think about useful symbols (e.g., padlock). > Mike Sherman > Graco Inc. > > Sent from Xfinity Connect Mobile App > > > ------ Original Message ------ > > *From: *Scott Aldous > *To: *[email protected] > *Sent: *October 11, 2016 at 10:30 AM > > *Subject: *Re: [PSES] Shorting switch - appropriate markings > > Hi Doug, > > It might be worth looking into practices for MV switchgear, where circuits > are sometimes grounded during maintenance (not the same thing, but a > similar concept). Here is an example from Siemens: > > http://www.energy.siemens.com/us/pool/us/power-distribution/ > ansi-standard-products/medium-voltage-switchgear/metal-enclo > sed-load-interrupter-switchgear-type-simosec-5-kv-27-6kv/ > SIMOSEC%20ANSI_02_final.pdf > > Fig. 8 shows a diagram of the 3 position switch design that prevents > accidental shorting of the supply to ground. It's a little hard to see the > detail, but Fig. 5 shows some markings for the switch position indication > (and a warning on the same panel that isn't good enough resolution to > actually read), but no standard symbols are used, only English. Reliance on > restriction of access to qualified individuals only might make the use of > symbols less common with MV equipment, but maybe there are better examples > out there. > > On Tue, Oct 11, 2016 at 1:25 AM, John Allen <[email protected] > > wrote: > >> John’s suggestion sounds reasonable, but I think you also need the >> triangular Caution symbol and/or the ISO symbol telling you to “consult the >> manual”, adjacent to the switch. >> >> >> >> John E Allen. >> >> W.London, UK >> >> >> >> *From:* John Woodgate [mailto:[email protected]] >> *Sent:* 11 October 2016 08:53 >> *To:* [email protected] >> *Subject:* Re: [PSES] Shorting switch - appropriate markings >> >> >> >> Would IEC 60417-5274: Manual change-over unit do? >> >> >> >> With best wishes DESIGN IT IN! OOO – Own Opinions Only >> >> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England >> >> >> >> Sylvae in aeternum manent. >> >> >> >> *From:* Doug Powell [mailto:[email protected] <[email protected]>] >> *Sent:* Tuesday, October 11, 2016 7:49 AM >> *To:* [email protected] >> *Subject:* [PSES] Shorting switch - appropriate markings >> >> >> >> Hello all, >> >> >> >> As we all know there are a variety of ON & OFF symbols available with >> slightly different usage depending on the situation. >> >> >> >> IEC 60417-5007 Power ON >> IEC 60417-5008 Power OFF >> >> IEC 60417-5009 Standby >> >> IEC 60417-5010 ON-OFF >> >> IEC 60417-5011 ON/OFF, push button >> >> IEEE 1621 Sleep Mode >> >> >> >> I now have a situation where I want to use a shorting switch on equipment >> to prevent a stored energy hazard while in maintenance mode. The idea is to >> provide instructions on how to discharge the equipment and then close the >> switch to prevent a voltage build up until maintenance is complete, then >> open the switch. My concern is identifying the appropriate symbol to place >> next to the switch positions. None of the above seem appropriate. In >> addition I have searched through ISO 7000 and 7010 with no luck. >> >> >> >> Can anyone suggest an internationally recognized symbol for this purpose? >> >> >> >> >> >> Thanks, Doug >> >> >> >> >> >> -- >> >> >> >> Douglas E Powell >> >> [email protected] >> http://www.linkedin.com/in/dougp01 >> >> - >> ---------------------------------------------------------------- >> >> 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) <http://www.ieee-pses.org/list.html> >> 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. 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) <http://www.ieee-pses.org/list.html> >> 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. 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) <http://www.ieee-pses.org/list.html> >> 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]> >> > > > > -- > Scott Aldous | Regulatory Compliance Program Manager | > [email protected] | 650-253-1994 > > - > ---------------------------------------------------------------- > > 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) <http://www.ieee-pses.org/list.html> > 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. 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) <http://www.ieee-pses.org/list.html> > 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]> > -- Douglas E Powell [email protected] http://www.linkedin.com/in/dougp01 - ---------------------------------------------------------------- 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]>
