http://www.ieee-pses.org/symposium http://www.emc2004.org/ -------------------------------------------------- Hi, I have a question on UL60950-1, in clause 2.6.4.2: "Equipment required to have protective earthing shall have a main protective earthing terminal.For equipment with a DETACHABLE POWER SUPPLY CORD, the earthing terminal in the appliance inlet is regarded as the main protective earthing terminal." in clause 2.3.2 "- for PLUGGABLE EQUIPMENT TYPE A, a separate protective earthing terminal shall be provided in addition to the main protective earthing terminal, if any (see 2.6.4.1)." My questions is how to mark the separate protective earthing terminal, do you think the symbol 60417-1-IEC-5019 is correct? For some equipment(for example, telecommunication centre equipment), seperate earthing terminal in the equipment may be a better way for connecting earth than earthing terminal in the appliance inlet. So my question is, if seperate earthing terminal is not required only from the standards UL60950-1, do you think the equipment which provide one seperate earthing terminal and indicated by symbol 60417-1-IEC-5019 do not comply with UL60950-1? Zhang Guoqing Huawei Technologies CO.,LTD. P.R. CHINA [email protected] Tel: +86-755-89653394 Fax: +86-755-89653384 Mobile: 13686493636 This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it! -------------------------------------------
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