. Electrical world. d. The high-tension safety fuses are constructed onthe same principle. They are vertically mounted and closed at thetop and in case of a short-circuit the gas escapes through a com-paratively small opening at the bottom. The cross connections are of aluminum. All wires are carriedon porcelain insulators. Four main distribution branches of high-tension wiring lead fromthe power house at Sant Mortier. One proceeds to St. miles in length, of two circuits, of three 8-mm. diameter con-ductors each. A second to Nantua is 12 miles in length, of which April 23, 1904. EL
. Electrical world. d. The high-tension safety fuses are constructed onthe same principle. They are vertically mounted and closed at thetop and in case of a short-circuit the gas escapes through a com-paratively small opening at the bottom. The cross connections are of aluminum. All wires are carriedon porcelain insulators. Four main distribution branches of high-tension wiring lead fromthe power house at Sant Mortier. One proceeds to St. miles in length, of two circuits, of three 8-mm. diameter con-ductors each. A second to Nantua is 12 miles in length, of which April 23, 1904. ELECTRICAL WORLD and ENGINEER. 763 the first miles are of 8-mni. wires, while the remainder toNantua are of 6 mm. diameter, with a branch from the end of thefirst miles to Viry of 4 mm. From different points on the lattercircuit small branches lead to Oyonnax, Belignat, Montreal andMarchon, each of three-wire 4-mm. diameter. The third main isexactly 5 miles in length and leads to Arinthod and is of three Where the wires are carried over railroads, braced pairs of doublepoles are erected. Over streets there is underneath the span a steelwire netting. In towns the high-tension wires are insulated withcables, while elsewhere the wiring is bare. There are 18 isolated transformer buildings of brick, each con-taining one transformer, except at St. Claude, where there is asub-station in which there are four transformers of 70 kw each. The electrical outfit for a transformer house consists of a three-pole switch for high-tension circuit, a three-pole switch for thelow-tension circuit, fuses and lightning arresters for the high andlow-tension circuits, and a transformer of the Oerlikon type. The sub-station at St. Claude is of two stories, in the upper onebeing placed three motor-generator groups and the is also a 7-ton hand crane. Each transformer group is com-posed of three machines, a three-phase, high-tension motor, theshaft of which is coupled at each
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
