Dielectric Strength of Air
1898; Institute of Electrical and Electronics Engineers; Volume: XV; Issue: 1 Linguagem: Inglês
10.1109/t-aiee.1898.5570317
ISSN2330-9431
Autores Tópico(s)Hygrothermal properties of building materials
ResumoTo investigate the dielectric strengtlh of air, tests were nmade of the striking distances in air between parallel cylinders of dif- ferent diameters, between slharp points, and between spheres of differeDt sizes.Further tests were mnade on the effect of insert- ing a conductor in or near the path of the disruptive disccharge and inve4tigating its influence on the striking distance.As souree of power, an A-S smooth core alternator of the Thomson-Houston type was uised, of about 30-K.w. capacity and a frequency of 125 cycles, givinlg practically a sine wave.In other tests a 60-K.w. high-frequency ironclad alternator of the Thomson-Houston type was used, giving the well knownl saw- tooth fornm of wave.The alternator was driven by a direct cur- renit motor of ample capacity.Witlh alternating E. AI.F.'S of only 125 cycles, the luminous phenomena, as brush discharges fromn conductors, etc., were much 1898.
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