The Electric Railway
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In our eReader you can find the full English version of the book. Read The Electric Railway Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Electric Railway
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Single-phase series motors can be controlled by the ordinary series-parallel method just described. Owing to the fact that the main justification for the single-phase motor is in the high trolley potentials which may be employed, it is necessary to use a stationary transformer on the car or locomotive to reduce the pressure to a value suitable for operation of the motors. This makes it possible to get an efficient Trolley FIG. 62. Transformer control for single-phase motors.
The motor performan...ce is varied by connecting the machines to the different taps, 1, 2, 3, etc. In turn.
method of potential variation simply by bringing out from the secondary of the transformer a number of taps which may be con- nected in turn to the motors. A controller of this type is shown diagrammatically in Fig. 62.
Owing to the high efficiency of the transformer, each step on the controller may be used as an operating point, there being no loss due to the use of resistance, as with direct-current con- trol.
What to read after The Electric Railway?
You can find similar books in the "Read Also" column, or choose other free books by Alonzo Morris Buck to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Single-phase series motors can be controlled by the ordinary series-parallel method just described. Owing to the fact that the main justification for the single-phase motor is in the high trolley potentials which may be employed, it is necessary to use a stationary transformer on the car or locomotive to reduce the pressure to a value suitable for operation of the motors. This makes it possible to get an efficient Trolley FIG. 62. Transformer control for single-phase motors.
The motor performan...ce is varied by connecting the machines to the different taps, 1, 2, 3, etc. In turn.
method of potential variation simply by bringing out from the secondary of the transformer a number of taps which may be con- nected in turn to the motors. A controller of this type is shown diagrammatically in Fig. 62.
Owing to the high efficiency of the transformer, each step on the controller may be used as an operating point, there being no loss due to the use of resistance, as with direct-current con- trol.
What to read after The Electric Railway?
You can find similar books in the "Read Also" column, or choose other free books by Alonzo Morris Buck to read onlineMoreLess
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