{"id":13158,"date":"2018-08-21T11:00:13","date_gmt":"2018-08-21T19:00:13","guid":{"rendered":"http:\/\/www.palada.net\/index.php\/2018\/08\/21\/news-6925\/"},"modified":"2018-08-21T11:00:13","modified_gmt":"2018-08-21T19:00:13","slug":"news-6925","status":"publish","type":"post","link":"http:\/\/www.palada.net\/index.php\/2018\/08\/21\/news-6925\/","title":{"rendered":"Updated ANSI Standards Address New Power Metering Capabilities and Challenges"},"content":{"rendered":"

Credit to Author: Piotr Przydatek| Date: Tue, 21 Aug 2018 13:00:45 +0000<\/strong><\/p>\n

As the growing presence of non-linear loads and distributed energy resources place new demands on electric power metering<\/a> equipment, standards organizations are revising their testing guidelines to address the resulting challenges. Recent updates to two of these standards, ANSI C12.1<\/a> and ANSI C12.20, specifically address the distorted waveforms and various power-quality<\/a> phenomena that have become a new normal for facility operators. As a new Schneider Electric white paper discusses, these revisions support the development of ANSI revenue meters that make the most of the latest developments in advanced metering technology.<\/p>\n

The American National Standards Institute (ANSI) oversees both ANSI C12.1<\/a>, \u201cAmerican National Standard for Electric Meters \u2013 Code for Electricity Metering,\u201d and ANSI C12.20<\/a>, \u201cAmerican National Standard for Electric Meters for Electricity Meters \u2013 0.1, 0.2 and 0.5 Accuracy Classes.\u201d The most recent editions of these standards are ANSI C12.1-2014 and ANSI C12.20-2015. Though these are both voluntary standards, they do form the basis for the testing requirements set by most North American utilities and utility commissions for their revenue (i.e., \u201cbilling\u201d) meter requirements.\"\"<\/a>ANSI and International Electrotechnical Commission (IEC) metering standards have developed in parallel with each other, with IEC testing guidelines predominating in many nations outside North America. The two groups\u2019 standards series share a number of tests and construction and performance requirements. They differ, however, in how they categorize meters \u2013 either by current classes or connected location \u2013 and in reference points for testing. The tables below offers a high-level view of how ANSI and IEC metering standards relate to each other.\"\"<\/p>\n

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The new Schneider Electric white paper, \u201cRegulating accuracy: impacts of changes in ANSI C12.1 and ANSI C12.20<\/a>\u201d outlines several major updates resulting from these standards\u2019 most recent revision cycles. At a high level, the three most important changes include the following:<\/p>\n