. Electric railway journal . Garmisch-Partenkirchen-Griessensection, which runs through Bavaria, is about 25 miles long. The Alpine character of the territory is indicated by thefact that on the two Austrian sections there are eighteentunnels with a length of 1412 ft., in addition to manybridges aad viaducts. The difficulties offered by the natureof the ground formed one reason for selecting electric trac- supplies energy to the 600-volt city lines of Innsbruck. The Mittenwald Railway also has a power station of itsown situated about miles to the south of Innsbruck inthe vicinity of t
. Electric railway journal . Garmisch-Partenkirchen-Griessensection, which runs through Bavaria, is about 25 miles long. The Alpine character of the territory is indicated by thefact that on the two Austrian sections there are eighteentunnels with a length of 1412 ft., in addition to manybridges aad viaducts. The difficulties offered by the natureof the ground formed one reason for selecting electric trac- supplies energy to the 600-volt city lines of Innsbruck. The Mittenwald Railway also has a power station of itsown situated about miles to the south of Innsbruck inthe vicinity of the Sill works. This station contains two3000-volt, single-phase, fifteen-cycle generators, having acontinuous rating of 3000 kva and a maximum output of4500 kva each. The energy from each generator is led toa 50,oco-volt oil-and-water-cooled transformer whichforms an inseparable unit with its generator. No 3000-volt busbars or switches are therefore needed, thus insuringextreme simplicity in all switching operations. The two. tion because it permitted the most economical ruling grade,namely, per cent. The railway reaches a height of3786 ft. above sea level at Seefeld, a difference in level of1968 ft. being overcome within miles. The savingeffected against steam by shortening the constructionallength at least 2l/2 miles at the most difficult part, withoutlosing possible traffic, amounts alone to more than the totalcost of the electrical equipment. transformer stations, which will also supply current to theBavarian lines until the completion of the Walchenseeplant, are located at Reith, 12 miles from the eastern, andat Schanz, 2 miles from the western boundary of Austria. TRANSMISSION LINE The transmission line is carried principallyon the poles of the overhead contact line and consists oftwo wires each of 35 sq. mm ( approximately No. 2 B. & S.) 34 ELECTRIC RAILWAY JOURNAL [Vol. XLII, No. i. section. As part of it is in a district which is difficult ofacces
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