A Daring Project.

Manawatu Herald, Volume III, Issue III, 25 June 1891, Page 2

A Daring P roject.

One of the features of the coming electrical exhibition at Frq,p(kfort-fn-the-Maiae will be the . fofansmisnon of power on a scale hitherto, Jtt|^| * attempted. When it;was. ainnflHP^* some months ago that it | frag $#>• posed to transmit 100-horse pow;er from Lauffen-on-the-Neckar •- ; ; to Frankfort, a distance of more. ; than 100 miles, the statement was received with smiles of incredulity ; but 'now it seems quite probable thai*' not only will the experiment be ; tried but

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that it will succeed, in "spite of the engineering difficulties that have to be surmounted. The Government has been asked to supply line for the purpose, and on the system used, the expense will not necessarily be at all severe, for the use of very high potential alternating currents is the feature ofythe 1 scheme as at present planned. The alternating generator will supply a step-up transformer, that in turn will transmit its secondary current at an enormously high potential along the line, to be transformed by a t>tep down transformer^ Frankfort to a potential practice for an alternating motor. A series of experiments carried out recently 1 at' Oerlikon involved theusedf pressures as high as 88,000 volts on the line. At such a potential the current transmitted becomes so small that the line is relatively a small factor in the losses incurred, even though it be of the 'extreme length proposed. Nothing can better illustrate the characteristic advantages of the alternating system than this beautiful process ot generating and utilising currents at a moderate potential, and transmitting them from station to Ration at a pressure so enormous. -that the losses in transitu become insignificant. — Electrical WorMi, ■<■-■>' fi;i: ■■' t.i. .•:•.-..