> -----Original Message----- > From: Zhangguoqing (A) [mailto:zhangguoq...@huawei.com] > Sent: Wednesday, September 11, 2013 05:39 > > My question is , if a equipment intends to provide > power over the telecommunication wiring system, the > current and the power should be controlled at the same > time? or, only the current should be controlled?
Zhang Guoqing - §1.4.11 is the assumed power available *from* a telecommunications network to connected equipment (terminals). A POTS device, for example, with no other power sources can be considered to be supplied by a 15 VA power limited source. This plays nicely with the 15 VA limits you'll find in the fire enclosure and internal wiring requirements. §6.3 relates to current generated by equipment and *delivered into* a telecommunications network under worst-case loading conditions. The intent is to protect wiring and wiring devices typical in telecommunications networks, in particular modular plugs/jacks, line cords and the like. Regards, Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
