Title :
Symmetrical Nomenclature of Three-Phase Circuits
Author_Institution :
Engineering department, Oklahoma Gas and Electric Company, Oklahoma City, Okla.
Abstract :
Two methods of identifying three-phase conductors, voltages, and currents are in general use today. One method, used extensively on power systems and based on 30° voltage relations, is called ``standard´´ nomenclature.1,2,3 The other method, used frequently for analytical purposes and based on 90° voltage relations, is called ``symmetrical´´ nomenclature.4 The following advantages of the symmetrical plan are discussed: 1. It is easier to use. 2. It identifies single-phase currents. 3. It requires fewer angles. 4. It is universal. 5. It is symmetrical.
Keywords :
Circuits; Coils; Current measurement; Current transformers; Electrical resistance measurement; Frequency; Magnetic cores; Measurement standards; Reactive power; Transformer cores;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1941.5058210
