. Electric railway journal . ck ofthe Southern Pacific Railroad, which has been electrified overthis section by the addition of rail bonds and the 3300-volttrolley. Twelve miles farther, from Exeter to Lemon Cove,a new roadbed has been constructed, making the total lengthof the Visalia-Lemon Cove electrified route 22 miles. Theroad is single tracked throughout, with the exception of theswitching and freight yards at Visalia, Exeter and LemonCove. The trolley construction is of the single catenary type,suspended from brackets on poles spaced 120 ft. apart. Ground was broken for the Exeter and L
. Electric railway journal . ck ofthe Southern Pacific Railroad, which has been electrified overthis section by the addition of rail bonds and the 3300-volttrolley. Twelve miles farther, from Exeter to Lemon Cove,a new roadbed has been constructed, making the total lengthof the Visalia-Lemon Cove electrified route 22 miles. Theroad is single tracked throughout, with the exception of theswitching and freight yards at Visalia, Exeter and LemonCove. The trolley construction is of the single catenary type,suspended from brackets on poles spaced 120 ft. apart. Ground was broken for the Exeter and Lemon Cove ex-tension in March, 1905,, and the road was operated by steamlocomotives in December, 1905. In March, 1908, the steamservice was discontinued, and since then the road has beenoperated by electricity. From Visalia to Exeter the country ispractically level. Between Exeter and Lemon Cove the land isof a rolling nature, but the maximum gradient on the roadhas been kept clown to per cent, and the curves are of long. Visalia Single-Phase Railway—Locomotive radius. The worst conditions are met on a combined on a per cent grade. TRANSMISSION AND CONVERSION APPARATUS For this electrification three-phase, 60-cycle power is purchased at 35,000 volts from the Mt. Whitney Power Company,which operates a hydro-electric generating plant on the Ke-weah River. At the Exeter substation, located nearly at thecenter of the present railway line, the 60-cycle power is steppeddown to 2200 volts, and then converted to 15 cycle, 11,000-volt,single phase current by a synchronous motor-generator the main frequency changing substation at Exeter the15-eycle, 11,000 volt feeder lines, made up of a pair of No. 4hare copper conductors, transmit S miles in cub direction tothe substations on the Lemon Cove and Visalia in these stations reduce the 15 cycle, 11,000 volt,single-phase supply to the trolley pressure of 3300 volts. The frequency changer
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