Hello; I would make sure that the transformer complies with all applicable specs with no exceptions. If there are any exceptions that you must find from the appropriate agencies. The manufacturer/vendor of the part must have necessary information to prove the claims about the part. The applicable specs are UL and telcom such as UL-1950 and FCC-68 in USA. There are vendors who would sell you parts which are in compliance with similar requirements but not identical!
Hope this clarifies some issues Chaman 3COM http://www.iit.edu/~bharcha/ [email protected] on 02/25/98 04:48:05 PM Please respond to [email protected] To: [email protected] cc: Subject: TNV Transformer Spacings Hello All, I received some transformer samples for a modem front end circuit that are supposed to have been designed to UL1950 and IEC950 creepage dimensions. It appears that the spacings would be correct if the core material was not considered. I believe this to be an oversight made by the transformer designer. Is the ferrite core considered a conductive material? If so, do the primary-secondary distances apply to each winding and the core material? Thanks in advance, Rich Kalian Aware, Inc. [email protected]
