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 |
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Сторінка
... polyphase currents , occupy the first half of the book . Overhead and underground conductors are next discussed , and then arc lamps are treated in considerable detail , since they are important features in electric lighting , and have ...
... polyphase currents , occupy the first half of the book . Overhead and underground conductors are next discussed , and then arc lamps are treated in considerable detail , since they are important features in electric lighting , and have ...
Сторінка
... POLYPHASE CURRENTS 141 CHAPTER IX . TRANSFORMERS 149 CHAPTER X. ALTERNATING CURRENT SYSTEMS OF DISTRIBUTION . 186 CHAPTER XI . CALCULATION OF ALTERNATING CURRENT CIRCUITS . 221 CHAPTER XII . OVERHEAD ELECTRICAL CONDUCTORS 237 CHAPTER ...
... POLYPHASE CURRENTS 141 CHAPTER IX . TRANSFORMERS 149 CHAPTER X. ALTERNATING CURRENT SYSTEMS OF DISTRIBUTION . 186 CHAPTER XI . CALCULATION OF ALTERNATING CURRENT CIRCUITS . 221 CHAPTER XII . OVERHEAD ELECTRICAL CONDUCTORS 237 CHAPTER ...
Сторінка 18
... Polyphase Alternating Current . 18. Two - phase system . 19. Three - phase system . 20. Monocyclic system . For the sake of completeness , the above table includes almost every possible system of electrical distribution , but many of ...
... Polyphase Alternating Current . 18. Two - phase system . 19. Three - phase system . 20. Monocyclic system . For the sake of completeness , the above table includes almost every possible system of electrical distribution , but many of ...
Сторінка 111
... polyphase systems are used in cases where both lamps and motors are to be supplied with alternating currents . The principles of alternating currents will now be given ; but it is not intended to treat the subject exhaustively , as ...
... polyphase systems are used in cases where both lamps and motors are to be supplied with alternating currents . The principles of alternating currents will now be given ; but it is not intended to treat the subject exhaustively , as ...
Сторінка 134
... polyphase transmission and direct - current distribution system . Means of Reducing Mutual Inductance . The simplest plan is to increase the distance between the conductors , as already stated ; but this is limited by practical ...
... polyphase transmission and direct - current distribution system . Means of Reducing Mutual Inductance . The simplest plan is to increase the distance between the conductors , as already stated ; but this is limited by practical ...
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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.