Brian, Based on the information you’ve provided, I think you are on the right track using 61010-1. There are portions of NFPA 79 that might be helpful to you, like those covering operator device and light colours, and standard panel wire colour coding that is used in industrial machines. There are also useful piece with relation to the design and integration of interlocks and emergency stop systems that you might also find helpful. Having said that, if you are using ISO 13850 (E-stop), ISO 14119 (Guards) and ISO 14120 (interlocks), and one of ISO 13849-1/-2 or IEC 62061 (Functional Safety), you are probably farther ahead, even in a North American market IMO.
NFPA 79 is not a certification standard, but a design standard, and therefore you will not find labs that will certify to this standard. NFPA 79 does not include arc flash requirements; Arc flash is covered by NFPA 70E and IEEE 1584. As far as 70E is concerned, a label indicating that an arc flash hazard assessment should be down by the user of the equipment is all that is required. Here’s a typical example. The user is required to conduct the assessment and determine the required shock hazard and arc flash hazard boundaries, and then the appropriate PPE. This cannot be done by the manufacturer. -- Doug Nix [email protected] +1 (519) 729-5704 "Electricity is actually made up of extremely tiny particles called electrons, that you cannot see with the naked eye unless you have been drinking." - Dave Barry On 24-Nov-14, at 15:28, Kunde, Brian <[email protected]> wrote: > Our company produces Laboratory Equipment. We design to the IEC/EN/UL 61010-1 > series of standards and the NFPA 70 NEC. > > Some of our instruments can be quite large; slightly bigger than an upright > piano. They typically are powered by 230VAC, 20A to 50A branch circuits. It > is typical that our instruments are installed near or in a heavy industrial > environment even though they are not considered Industrial Machines. They are > sometimes mistaken as Industrial Machines. > > Recently, we have had customers ask the following questions about our > instruments: > > * Proof that the electrical system complies to NFPA 79. > * Are the electrical enclosures marked for arc flash hazard per NFPA 79? > * What is the Short Circuit Current Rating (SCCR) of our instruments? > > > Typically we simply reply that our instruments are not Industrial Machines > and that is that. However, if there is information we can provide that would > be helpful, we would like to do so. > > I can see where our customer may wish to power our instrument from a circuit > that is capable of producing very high short circuit current (SCC). If this > exceeds the 5kA rating of our internal Supplementary Protection Device, then > our customer would have to supply a Brach Circuit Breaker that can handle the > SCC. > > High SCC can also cause a concern for Arc Flash. I do not know the > requirements of NFPA 79 and how it affects Arc Flash. For instance, since > our chassis meets the mechanical requirements called out in IEC 61010-1, is > it likely that our chasses will contain the arc flash hazards? > > Is there any part of NFPA 79 that could apply to our instruments; to the > mechanical or electrical system? > > Has something changed recently which would explain why we are now receiving > these type of questions? > > Thanks for any input or advice. > > The Other Brian > > > > > ________________________________ > > LECO Corporation Notice: This communication may contain confidential > information intended for the named recipient(s) only. If you received this by > mistake, please destroy it and notify us of the error. Thank you. > > - > ---------------------------------------------------------------- > 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]> - ---------------------------------------------------------------- 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]>
