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phasor

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phasor [′fāz·ər]
(physics)
A rotating line used to represent a sinusoidally varying quantity; the length of the line represents the magnitude of the quantity, and its angle with thex-axis at any instant represents the phase.
Any quantity (such as impedance or admittance) which is a complex number.
(solid-state physics)
A low-energy collective excitation of the conduction electrons in a metal, corresponding to a slowly varying phase modulation of a charge-density wave.


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The Phasor family incorporates conventional and phased array ultrasound technology in three upgradeable models: Phasor CV, Phasor 16/16 Weld and Phasor XS.
Topics covered include phasors and polarity; symmetrical components; relay input sources; basic design principles; system-grounding principles; generator protection and intertie protection for distributed generation; transformer, reactor, and shunt capacitor protection; bus protection; motor protection; line protection; pilot protection; stability, reclosing, load shedding, and trip circuit design; and microprocessor applications and substation automation.
 
 
 
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