Democratic Sentinel, Volume 15, Number 13, Rensselaer, Jasper County, 17 April 1891 — Power One Hundred Miles. [ARTICLE]

Power One Hundred Miles.

One of the features of the coming electrical exibition at Frankfort-on-the-Main will be the transmission of power on a scale hitherto never attempted. When it was announced some months ago that it was proposed to transmit IUO horse-power from Lauffen-on-the-Neckar to Frankfort, a distance of more than 100 miles, the statement was received with smiles of incredulity; bit nqw it seems quite probably that not only will the experitrigd but that it will succeed, n B h he of the engineering difficulties that have to be gur™on n ted | Government has been asked io supply hne for the and on the system used will not neoessarily be at all severe ( for the use of very potential alternating currents is the feature of the 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 retransformed by a step-down transformer at Frankfort to a potential practicable for an alternating motor. A series of experiments carried on recently at Oerlikon involve the use of pressures as high as 33,000 volts on the line. At such a potential the current transmitted becomes so small that the line is a relatively 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 of generating and utilizing currents at a moderate potential and transmitting them from station to station at a pressure so enormous that the losses in transitu become insignificant. — Electrical World.