Power-factor Wastes: A Practical Book for Manufacturing Executives, Plant Engineers and ElectriciansMcGraw-Hill book Company, Incorporated, 1926 - 326 páginas |
Palavras e frases frequentes
100 per cent alternating-current amperes applied average power factor cables capacitor capacity cent full-rated-load cent power factor central station central-station circuit ckva clause Company-Large power conductor connected consumer corrective equipment corrective kilovolt-amperes cost current strength customers demand charge economic efficiency Elec electric energy engineering feeders full load full rated load full-rated-load kilowatt input Fynn-Weichsel motor heating horsepower output increase the power induction motor industrial plant installed investment kilovolt kilowatt-hours lagging reactive Light load factor losses low power factor manufacturers meter motor terminals operating overload phase angle power bills power company power user power-factor correction power-factor-corrective apparatus power-factor-improving production public utility reactance reactive kilovolt-amperes reactive kilowatts reduced running current saving speed squirrel-cage static condenser substations supply voltage synchronous condenser synchronous motor Table three-phase tion torque total current transformers transmission trigonometric functions units voltage regulation volts watt-hour watt-hour meters wires
Passagens conhecidas
Página 53 - Rate" applies to a charge for electric service based upon the customer's installation of energy-consuming devices. This is usually so much per watt or per kilowatt, per month or per year. Sometimes this type of rate is nominally so much per customer per year, or per month, for each...
Página 53 - Rate" ap1>lies to that method of charge which consists of a Demand Charge, a sum based upon the demand either estimated or measured, or the connected load, plus an Kncrgy Charge, a sum based upon the quantity of energy used.
Página 220 - The treatment of rupia and the secondary symptoms allied to it, is one of the most interesting, and, at the same time, most complex problems in the management of the venereal disease.
Página 124 - W, we find that the most economical area of conductor is that for which the annual cost of energy wasted is equal to the annual interest on that portion of the capital outlay which can be considered to be proportional to the weight of metal used. Professor George Forbes, in his Cantor Lecture, on " The Distribution of Electricity...
Página 53 - Block Hopkinson Demand Rate" is a common modification of the "Hopkinson Demand Rate," in which the demand charge or the energy charge or both may be of the block form. Such a modification is graphically shown in Fig. 903. 5. The "Doherty or Three Charge Rate...
Página 61 - A reading of these three papers will show that by 1896 the analysis of the cost of service was already almost complete. There was recognition of diversity factor and of load factor, for which latter useful expression the industry is indebted to Colonel Crompton. We had begun to speak of customer costs and of demand costs and of costs proportional to the energy metered. The defect of a rate method which encouraged the short-hour consumer by placing part of his costs upon the long-hour consumer had...
Página 54 - Rate," which consists of a charge per customer or per meter; plus a Demand Charge, a sum based upon the demand either estimated or measured, or the connected load ; plus an Energy Charge, a sum based upon the quantity of energy used. This rate may be expressed also in either the block or the step form.
Página 69 - Committee, that the incoming administration endeavor to have all induction motors hereafter manufactured, compensated for lagging currents ; this compensation to be capable of being varied to suit the loading conditions of the motor, so that a power-factor approximating unity may be obtained.
Página 53 - Block" indicates that a certain specified price per unit is charged for all or any part of a block of such units, and reduced prices per unit are charged for all or any part of succeeding blocks of such units, each such reduced price per unit applying only to a particular block or portion thereof.
Página 271 - The old attitude of antagonism still survives in too many cases, fostered by political or personal interests or failure to understand the fundamental principles which now control public utility service. It has been pointed out that a public utility is a public servant, and that it works for a fixed wage or at least one variable within quite narrow limits, the real profits from its operations and development accruing to the communities served through reduction in rates and improved service.