. The Street railway journal . The current is stepped-down to 420volts by these transformers which deliver it to the rotaryconverters. The current used for lighting is stepped-downto 2300 volts by three 200-kw and three 100-kw single-phase, delta-connected transformers, motor-operated oilswitches and disconnecting switches being provided be-tween the 11,000-volt buses and the transformers, and sole-noid-operated oil switches and disconnecting switches be-tween the transformers and the 2300-volt buses. The oil switches, rheostats, field switches and the gov-ernors of the main genera
. The Street railway journal . The current is stepped-down to 420volts by these transformers which deliver it to the rotaryconverters. The current used for lighting is stepped-downto 2300 volts by three 200-kw and three 100-kw single-phase, delta-connected transformers, motor-operated oilswitches and disconnecting switches being provided be-tween the 11,000-volt buses and the transformers, and sole-noid-operated oil switches and disconnecting switches be-tween the transformers and the 2300-volt buses. The oil switches, rheostats, field switches and the gov-ernors of the main generators and the switches for the 1 r,-ooo-volt lines are operated by remote control switches on aswitchboard having 110 volts at the latter. This board hasa panel for each generator, a tie panel for the 11,000-voltbuses, a panel for each of the rotary converters, two trans-former panels and six outgoing line panels. The regulation of the auxiliary equipment, the direct-current side of the rotary transformers and 600-volt feeders,. 56 STREET RAILWAY JOURNAL. [Vol. XXX. No. 2. the local power and lighting circuits, and so forth, are con-trolled from a second switchboard. This board has twopanels for Tirrill voltage regulators, a panel for each ofthree exciter units, a station lighting panel, four panels for600-volt, direct-current feeder lines, two panels for the posi-tive of the direct-current side of three rotary converters, a600-volt panel for power supply around the station andthree 2300-volt feeder panels. A switch track is extended into the engine room for acar length to expedite the delivery of heavy machinery. A25-ton Niles-Bement-Pond traveling crane operated bythree electric motors spans the turbine room and serves allparts of the latter. The station was designed and built under the directionof Sargent & Lundy, consulting mechanical and electricalengineers,of Chicago. J. B. McAfee, C. O. Emmons and Hathaway formed the engineering committee in chargeof the design and c
Size: 1680px × 1487px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
