Electric Lighting: A Practical Exposition of the Art, for the Use of Engineers, Students, and Others Interested in the Installation Or Operation of Electrical Plants, Том 2D. Van Nostrand Company, 1901 |
З цієї книги
Результати 1-5 із 88
Сторінка 17
... motor converters in parallel ( primary 1,000 to 5,000 volts ) . Single Phase Alternating Current . 15. Low tension incandescent and SERIES SYSTEMS OF ELECTRICAL DISTRIBUTION . 17 CHAPTER II SERIES SYSTEMS OF ELECTRICAL DISTRIBUTION.
... motor converters in parallel ( primary 1,000 to 5,000 volts ) . Single Phase Alternating Current . 15. Low tension incandescent and SERIES SYSTEMS OF ELECTRICAL DISTRIBUTION . 17 CHAPTER II SERIES SYSTEMS OF ELECTRICAL DISTRIBUTION.
Сторінка 18
... Primary circuit 1,000 to 5,000 volts , two- and three - wire secondary circuits at about 50 , 100 , or 200 volts . 17. Very high tension systems with step - up and step - down transformers . Long distance transmission circuit 5,000 to ...
... Primary circuit 1,000 to 5,000 volts , two- and three - wire secondary circuits at about 50 , 100 , or 200 volts . 17. Very high tension systems with step - up and step - down transformers . Long distance transmission circuit 5,000 to ...
Сторінка 85
... primary circuit accidentally connects with the secondary . Insurance and fire department authorities have been vigorously opposed to grounding the neutral of a three - wire system , or , in fact , any part of an electrical circuit ...
... primary circuit accidentally connects with the secondary . Insurance and fire department authorities have been vigorously opposed to grounding the neutral of a three - wire system , or , in fact , any part of an electrical circuit ...
Сторінка 93
... primary circuit , and the latter generating the current for the secondary cir- cuit , by which the lamps , etc. , are supplied . It is obvious that the dynamo may be designed to produce any desired voltage without regard to that of the ...
... primary circuit , and the latter generating the current for the secondary cir- cuit , by which the lamps , etc. , are supplied . It is obvious that the dynamo may be designed to produce any desired voltage without regard to that of the ...
Сторінка 94
... primary and second- ary circuits , unless special precautions are taken . Another lim- itation of this construction is the difficulty of acting on the two armature windings independently for purposes of regulation . Since both are wound ...
... primary and second- ary circuits , unless special precautions are taken . Another lim- itation of this construction is the difficulty of acting on the two armature windings independently for purposes of regulation . Since both are wound ...
Інші видання - Показати все
Electric Lighting: A Practical Exposition of the Art, for the Use of ... Francis Bacon Crocker Попередній перегляд недоступний - 2016 |
Загальні терміни та фрази
alternating current amperes apparatus arc lamps armature arrangement bulb bus bars cable candle-power capacity carbon cent circular mils conductors conduit connected constant current constant potential copper loss core cross-arm cross-section cut-out device diameter difference direct current distribution drop dynamo effect efficiency electric lighting electrical conductors employed energy equal fact feeders feeding-points filament flow frequency full load fuse globe ground heat hence incandescent lamps inch inclosed arc increase inductance insulation iron joint latter length less machines magnetic maximum mechanical metal meter method motor number of lamps ohms one-half open arc operation ordinary parallel phase pipe placed pole polyphase porcelain practically pressure primary produced reactance regulation represented in Fig resistance rheostat rotary rotary converters secondary circuit shown in Fig shunt side single-phase socket supplied switch temperature terminal three-phase three-wire system tion transformers tube two-phase two-wire two-wire circuit usually voltage volts wattmeter watts winding
Популярні уривки
Сторінка 460 - The lower limit is specified for rubber-covered wires to prevent gradual deterioration of the high insulations by the heat of the wires, but not from fear of igniting the insulation. The question of drop is not taken into consideration in the above tables.
Сторінка 11 - 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...
Сторінка 459 - Must be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cannot come in contact with the pipe accidentally. Wires should be run over, rather than under, pipes upon which moisture is likely to gather or which, by leaking, might cause trouble on a circuit.