. Electric railway journal . ched to a box girder structurecomposed of steel channel irons supported on vertical pipestandards. Current transformer connections are madearound Ohio Brass No. 9462 insulators inserted in the high-tension leads, which are all of y^-m. hollow copper oil switches, which are of the usual solenoid-operated,remote-controlled type, are mounted in rows upon the floorunder the disconnecting switch structures on each side ofthe high-tension bus supports and about 12 ft. below bus tubing is carried horizontally upon pin-typeThomas insulators supported on
. Electric railway journal . ched to a box girder structurecomposed of steel channel irons supported on vertical pipestandards. Current transformer connections are madearound Ohio Brass No. 9462 insulators inserted in the high-tension leads, which are all of y^-m. hollow copper oil switches, which are of the usual solenoid-operated,remote-controlled type, are mounted in rows upon the floorunder the disconnecting switch structures on each side ofthe high-tension bus supports and about 12 ft. below bus tubing is carried horizontally upon pin-typeThomas insulators supported on pipe framing hung fromthe roof, and the leads from the switches to the buses areanchored to the ceiling structure by two-part suspensioninsulators, lateral taps being made at the level of the busesto the latter. All current transformers in the high-tensionleads are mounted on platforms 5 ft. above the floor, theplatforms being carried in each case by four 3-in. ironpipes. From the buses the 33,000-volt energy is led through. Berkshire Improvements—Oil Switch, Special Mounting atCheshire Substation disconnecting and oil switches to the outgoing lines and tothe transformer banks for rotary converter service. Inthe latter case the leads are carried through a 12-in. brickfire wall separating the bus room from the transformerroom, Ohio Brass insulating bushings being used. In gen-eral, a spacing of 3 ft. is maintained between adjacent high-tension conductors throughout the substation. From the transformer secondaries 370-volt cables are run to the ro-tary starting panels through floor ducts, and thence to therotaries. A covered trench 3 ft. wide and 2 ft. deep islocated behind the switchboard to facilitate access to thecables. The side of the installation contains no featuresof unusual character. The local feeder service is handledby three 500,000-circ. mil cables running respectively north,south and east from the substation and supplying thenearer portions of the main line
Size: 2016px × 1240px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
