IEEE C57.140

Abstract

The intent of this guide is to assist the working groups within the IEEE Transformers Committee; thus, specific examples were taken from the transformer-related standards. It should be recognized that identification of general principles and procedures could have broader application. <br><strong>Purpose</strong> <br>The purpose of this guide is to assist Transformer Working Groups in the interpretation of IEEE/ ASTM SI 10^TM-2002¹ and other appropriate standards as they convert their documents to the use of SI units. This guide is concerned only with the conversion of existing standards, where a manufacturer&#8217;s product that meets the existing standard&#8217;s limits in U.S. Customary units will always meet the new standard&#8217;s limits in SI units. With the exception of a few very specific examples in A.3, there has been no attempt to make the metric values more rounded or more convenient. Making such changes to a standard may affect the qualification of existing designs and should come only from a consensus of the interested parties in the appropriate working groups.<br>¹Information on references can be found in Clause 2.