The Analysis of Economic Efficiency of Introduction ac Frequency-Regulated Electric Drives for Pump Units in Oil-Refining Factory
In article bring the analysis of economic efficiency at changing of steam pumps on centrifugal, applied to installation of selective purification of oil, and also calculation and a choice of the frequency electric drive.In article are not reflected other advantages connected to application of the frequency electric drive such as improvement of character of course of transients, decrease expenses for service, reduction of noise, etc.