[PSES] SCCR of an electrical cabinet
Dear members: My company is developing machinery for the USA market and we are having contact with UL508A. According to the standard, the label must contain the SCCR of the cabinet in order to avoid the connection to a mains that can deliver higher currents in case of short circuit. The supply terminals of are connected directly to a transformer and the method provided by the standard states "Power transformers, reactors, current transfomers, dry-type capacitors, resistors, varistors, and voltmeters are not required to have a short circuit current rating". Having into account that the transformer is the only component in the primary side. How can we determine the SCCR of our equipment?? We determined the SCCR of the secondary side following the standard but I'm stuck with the primary side. I'm thinking about put an infinite SCCR value but perhaps I'm being a bit optimistic. I hope someone can give us any guidance. Thank you very much in advance!! Víctor Ostíbar Product Compliance vosti...@meler.eu<mailto:vosti...@meler.eu> Tel. +34 948 68 19 31 Este mensaje se dirige exclusivamente al destinatario identificado, y puede contener información confidencial sometida a secreto profesional, o cuya divulgación esté legalmente prohibida. Si ha recibido este mensaje por error, le rogamos nos lo comunique de forma inmediata por esta misma vía y proceda a su eliminación, así como a la de cualquier documento adjunto al mismo, advirtiéndole que no está autorizado a utilizar, revelar, distribuir, divulgar, imprimir, copiar o realizar ningún tipo de acción sobre todo o parte de la información contenida en el mensaje. Se declina cualquier responsabilidad de Focke Meler Gluing Solutions, S.A. derivada de cualquier cambio realizado en el contenido del mensaje tras su envío. This e-mail is addressed exclusively to the recipient and may contain privileged information under a professional confidential agreement or it may be against the law to disclose its contents. If you receive this e-mail in error, please let us know immediately (by return e-mail) and proceed to its destruction, as well as any document attached to it, since you are not authorized to execute any action, use, disclose, distribute, print or copy all or part of the contained information. Focke Meler Gluing Solutions, S.A. is not responsible for changes made to this message after it was sent. - 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 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 Mike Cantwell For policy questions, send mail to: Jim Bacher: David Heald:
[PSES] Railway Earthing and Isolation Requirements - Rolling Stock and Trackside Equipment
Dear James: Insulation tests levels for rolling stock equipment are stated in EN 50155. Have in mind that there are two versions in force in this moment and there are some slight differences related with insulation tests. Creepage and clearances are defined in EN 50124-1. I'm not familiar with infrastructure requirements but a review of the following list will help you https://ec.europa.eu/growth/single-market/european-standards/harmonised-standards/interoperability-rail-system_en I hope it helps. Have a nice weekend. Víctor Ostíbar Seuridad de producto / Product Safety vosti...@meler.eu<mailto:vosti...@meler.eu> Tel. +34 948 68 19 31 [http://www.meler.eu/firmaemail/meler_logo.gif] Focke Meler Gluing Solutions, S.A. Pol. Los Agustinos, c/G, nave D-43 * E-31160 Orkoien - Navarra (Spain) Tel. + 34 948 351 110 * Fax +34 948 351 130 * i...@meler.eu<mailto:i...@meler.es> * www.meler.eu<http://www.meler.eu/> A Focke Group Company Este mensaje se dirige exclusivamente al destinatario identificado, y puede contener información confidencial sometida a secreto profesional, o cuya divulgación esté legalmente prohibida. Si ha recibido este mensaje por error, le rogamos nos lo comunique de forma inmediata por esta misma vía y proceda a su eliminación, así como a la de cualquier documento adjunto al mismo, advirtiéndole que no está autorizado a utilizar, revelar, distribuir, divulgar, imprimir, copiar o realizar ningún tipo de acción sobre todo o parte de la información contenida en el mensaje. Se declina cualquier responsabilidad de Focke Meler Gluing Solutions, S.A. derivada de cualquier cambio realizado en el contenido del mensaje tras su envío. This e-mail is addressed exclusively to the recipient and may contain privileged information under a professional confidential agreement or it may be against the law to disclose its contents. If you receive this e-mail in error, please let us know immediately (by return e-mail) and proceed to its destruction, as well as any document attached to it, since you are not authorized to execute any action, use, disclose, distribute, print or copy all or part of the contained information. Focke Meler Gluing Solutions, S.A. is not responsible for changes made to this message after it was sent. - 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 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 Mike Cantwell For policy questions, send mail to: Jim Bacher: David Heald: