. Electric railway journal . er substation are shown. Eachof these substations contains at present one 200-kw, three-phase,25-cycle, 650-volt General Electric rotary converter, suppliedthrough three 75-kw, oil-cooled, single-phase General Electrictransformers, reducing the potential from 19,000 to 400 volts. 650-volt wiring for the railway service is carried under thefloor from the switchboard and out of the building to the trol-ley and rails at the opposite side from which the high-tensionservice enters. Space is reserved in each substation for a sec-ond rotary and its attendant transformers
. Electric railway journal . er substation are shown. Eachof these substations contains at present one 200-kw, three-phase,25-cycle, 650-volt General Electric rotary converter, suppliedthrough three 75-kw, oil-cooled, single-phase General Electrictransformers, reducing the potential from 19,000 to 400 volts. 650-volt wiring for the railway service is carried under thefloor from the switchboard and out of the building to the trol-ley and rails at the opposite side from which the high-tensionservice enters. Space is reserved in each substation for a sec-ond rotary and its attendant transformers and switching equip-ment. The Webber Pond substation is a duplicate of the oneat Days Corner, except that the former is an intermediate andthe latter a terminal substation, the high-tension line being car-ried no further southward. Each substation is operated by twomen, the shifts being 12 hours in length. The Winthrop substation supplies current to a branch of theold Augusta, Winthrop & Gardiner Street Railway, about 15. Maine Electric Railways—Hydro-Electric Power House and Dam at Winslow Each substation is a brick building with concrete floor andtimber supported roof of hard pine, with an extension al therear for the reception of the high-voltage wires. Lightning ar-resters and oil switches are installed in a separate compart-ment at the rear of the substation building, and from the lat-ter place the leads arc carried through the wall to the trans-former primaries, The transformers arc located in the operat-ing room, behind the switchboard, and the rotary in each sub-station stands in front of the latter, with a clear space at eachside of the machine. The lightning arresters arc built for miles in length, running westward from Augusta. It contains a 150 kw Westinghouse 25-cycle rotary converter, supplied withcurrent through, two 90-kw, 11,000 to 400-volt transformers,[he substation is operated by two men in 12 hour shifts. Therotary is started by an induction motor, and, a
Size: 2662px × 939px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
