. The Street railway journal . The a. c. switchboard contains ten panels. There are two16-in. panels, one for a Tirrell regulator, and a blank, andeight 24-in. panels. This board is of blue Vermont marble,and it has a panel for the two exciters, two 500-kw generatorpanels, a synchronous motor panel, an induction motorpanel, also used for tub transformers, and four lightingfeeder panels. Hand-operated oil switches with remote me-chanical control are provided for throwing any machine orfeeder upon either set of bus-bars. No special attempt ismade to separate the railway and central station loads
. The Street railway journal . The a. c. switchboard contains ten panels. There are two16-in. panels, one for a Tirrell regulator, and a blank, andeight 24-in. panels. This board is of blue Vermont marble,and it has a panel for the two exciters, two 500-kw generatorpanels, a synchronous motor panel, an induction motorpanel, also used for tub transformers, and four lightingfeeder panels. Hand-operated oil switches with remote me-chanical control are provided for throwing any machine orfeeder upon either set of bus-bars. No special attempt ismade to separate the railway and central station loads, thevoltage regulator permitting smooth and close regulation inspite of the fluctuations. A special 30-in. panel is installedat one side of the engine room for the control of the variouslocal lighting and power circuits in the plant, such as engineand boiler-room lamps, coal-handling motors, etc. A specialmotor-driven hoist is provided to enable coal to be deliveredto the companys cars from the storage pile when desired for. SECTION THROUGH BOILER ROOM, SHOWING FEED ANDCIRCULATING WATER SYSTEM feeding the older plants at Lexington and Newtonville. Thelocal power and lighting panel contains fifteen switches anda Westinghouse single-phase integrating wattmeter. Admirable lavatory facilities with open plumbing are pro-vided in the plant, with expanded metal lockers for the oper-ating force. Both hot and cold water are piped to the wash-ing stands. An office for the chief engineer was also builtin the engine room at the time the plant was OF PLANT Through the courtesy of Matthew C. Brush, of the Sub-urban Manufacturing Company, some results of tests upon themachinery of the new Waltham power station are presentedbelow: The first alternator tested was a 500-kw, 60-cycle, 2300-volt, three-phase machine, of the enclosed type, having smallbrass hand-hole covers in the end shields, which affordedeasy access to parts of the winding. Mounted on the shaftwere two small b
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
