Cyclopedia of Applied Electricity Volume 4

Cyclopedia of Applied Electricity Volume 4

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ...should not be run vertically, as they must be stretched too tightly to prevent slipping. Fig. 39 shows a large station using direct-connected units, while Fig. 40 shows the arrangement of the turbine plant BOtLER HOUSE ENGtNE. ROOM Fig. 37. of the Boston Edison Electric Illuminating Company. This station will contain twelve such 5,000 K.W. units when completed. Note the arrangement of boilers when several units are required for a single prime mover. The use of a separate room or building for the cables, switches, and operating boards is becoming quite common for high-tension generating plants. The remarkable saving in floor space brought about by the turbine is readily seen from Fig. 41. The total floor space occupied by the new Boston station is 2.64 square feet per K.W. This includes boilers--of which there are eight, each 512 H.P. for each unit--turbines, generators, switches, and all auxiliary apparatus. WThen transformers are used for raising the voltage, they may be placed in a separate building, as is the case at Niagara Falls, or the transformers may be located in some part of the dynamo room, preferably in a line parcdlel to the generators. m BdlLER HOUSE ENQlNE ROOM Fig. 39. LlNE SHArT Fig. 42 shows the arrangement of units in an hydraulic plant. Fig. 43 is a good example of the practice in substation arrangement. Here the switchboard is mounted at one end of the room, while the rotary converters and transformers are arranged along either side of the building. Large cable vaults are installed at the stations operating on underground systems, the separate ducts being spread out, and sheet-iron partitions erected to prevent damage being done to cables which were not originally defective, by a short circuit in any one feeder. more

Product details

  • Paperback | 106 pages
  • 189 x 246 x 6mm | 204g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236638603
  • 9781236638601