Information AboutTwo Phase |
| CATEGORIES ABOUT TWO PHASE | |
| electricity distribution | |
Three-phase Electric Power requires less conductor mass for the same voltage and overall amount of power. It has all but replaced two-phase power for commercial distribution of electrical energy, but two-phase circuits are still found in certain control systems. Two-phase power can be derived from a three-phase source using two Transformer s in a Scott Connection . One transformer primary is connected across two phases of the supply. The second transformer is connected to a center-tap of the first transformer, and is wound for 86.6% of the phase-to-phase voltage on the 3-phase system. The secondaries of the transformers will have two phases 90 degrees apart in time, and a balanced two-phase load will be evenly balanced over the three supply phases. Three-wire, 120/240 volt single phase power used in the USA and Canada is sometimes incorrectly called "two-phase". The proper term is '' Split Phase '' or ''3-wire single-phase''. SEE ALSO REFERENCES
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