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Two phase - Definition and Overview |
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Two-phase electrical power was used in some early 20th century factories and the distribution systems that served them. It utilized two phases, 90° apart, and was usually supplied using four wires, two for each phase. Less frequently, three wires were used, with a common wire with a larger-diameter conductor.
Induction motors designed for two-phase operation use the same winding configuration as capacitor start single-phase motors.
Three-phase electric power provides smoother operation and requires smaller conductors for the same voltage and overall amount of power. It has all but replaced two-phase power.
Two-phase power can be derived from a three-phase source using two transformers in a Scott connection.
Three-wire, 120/240 volt single phase power used in the USA is sometimes incorrectly called "two-phase". The proper term is split phase.
See also
Polyphase system
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Example Usage of phase |
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dassahlittleone: Is going to play a crazy game of phase ten <1 $@/\/\UEL 2:30> |
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ButterflyKayK: phase one complete phase two in progress..."not gonna get me down, imma show you tonight we goin have to blow out these lights..." |
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XXravennnXX: im going through a aly & aj phase. :DD |
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