Evening star. [volume] (Washington, D.C.) 1854-1972, 1892-11-21
TRANSMITTING ELECTRIC POWER.
Results of Experiments on a Wire Over
Hundred Miles Long.

Results OF Experiments a Wire Over 9
Hundred Miles Long.
When the international electro-technical OK.
hibition at Frankfort closed last month Consul
General Frank II. Mason reported to the State
Department that the precise result Of the ex-
pertinent that had been made in the transmits.
sion Of electrical energy to the exhibition from
Lauffen, on the Neckar river. 1OS miles dis tant
had not yet been definitely determined and that
the whole apparatus would be subjected to fur.
Their and conclusive tests by special commits
sion, whose verdict would form part of the off.
cial report Of the exhibition, which was then
expected to be ready for publication by the end
of December"
In another report recently transmitted the
consul general says:
This subsequent test Of the long-dis lance
transmission system was deliberately made during
the latter part of October by committee of high
scientific authority, headed by Prof. Weber OF
Zurich, and since the general report of the ex.
hibition has been delayed in preparation by
various causes and will probably not appear for
some weeks yet to come, the special verdict OF
Prof. Webers committee, for which electrical
experts in all countries have been SO anxiously
waiting, has now been authoritatively an
nounced.
This announcement declares a result even
more favorable than had been previously FORE
Swallowed. As was stated in the previous report
OF this series. the electrical energy actually de-
livered at Frankfort was estimated to be from
20 to rs per cent of that which was generated
at Lauffen. the remaining Is to 80 per cent
having been lost in the process Of transforma-
ton and transmission. This was considered q
triumph which marked distinct era in tn g
pratlcal application of electricity
The report of Prof. Weber's committee now
declares as the result of its exhaustive tests and
measurements, which were made at each sec
ton of the line from the turbine at Lauffen to
the motor in the Frankfort exhibition that
there was an initial loss varying from to 10
per cent in the generating dynamo, and that
deducting this from the whole aggregate loss as
hitherto estimated, it follows that the proper.
ton of created energy actually available at the
exposition was from so to 90 per cent of the
current that was actually delivered to the con-
densing transformer at Lauffen. In other
words, there was loss in the dynamo of from
to 10 per cent, which may. by more perfect
construction, be saved, and which should not
be charged to the debit side Of the long distance
experiment.
The net result is. therefore. that the actua,
and necessary loss Of energy during the triple
process OF transforming a current Of from 200
to 300 horse power into a current of small
volume but high intensity, transmitting this
intensified current a distance of 10S miles over
naked copper wires hung upon ordinary tele-
graph poles by oil and porcelain insulators, and
retransforming 1t into q current of ordinary
pressure. was only 1S to 20 per cent leaving
from 80 to 50 per cent of the generated current
available for motive or lighting purposes"