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Description of C37.26-1972 1972New IEEE Standard - Superseded. Methods used to measure the power factor in low-voltage test circuits are covered. Since the power factor measurement for high-capacity test circuits is particularly difficult, and different methods may yield different results, the methods that are least likely to yield errors are recommended for particular circuit conditions. The ratio method is recommended for fast clearing devices that may have total interruption times of 0.5 cycle or less. The DC decrement method is recommended for circuits with a 30% power factor or less when the device to be tested interrupts at a point in time more than 0.5 cycle from the initiation of the current. The phase relationship method, using current and voltage waves, is recommended for circuits having power factors over 30%.This book also exists in the following packages...Subscription InformationMADCAD.com IEEE Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time. Listed IEEE Standards prices are applicaple for US firms whose annual revenue is less than $400 million. All others, please contact us at info@madcad.com or +1 800.798.9296.
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About IEEEIEEE is the world's largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity. IEEE and its members inspire a global community through IEEE's highly cited publications, conferences, technology standards, and professional and educational activities. IEEE, pronounced "Eye-triple-E," stands for the Institute of Electrical and Electronics Engineers. The association is chartered under this name and it is the full legal name. IEEE creates an environment where members collaborate on world‐changing technologies – from computing and sustainable energy systems, to aerospace, communications, robotics, healthcare, and more. The strategic plan of IEEE is driven by an envisioned future that realizes the full potential of the role IEEE plays in advancing technology for humanity. The IEEE Brand Identity Toolkit explains the basic usage rules for all corporate identity elements and how to utilize them to create a powerful and consistent communications pieces. IEEE is led by a diverse body of elected and appointed volunteer members. The governance structure includes boards for operational areas as well as bodies representing members in the 45 Societies and technical Councils and ten worldwide geographic regions. |
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