General Cable

About: General Cable is a based out in . It is known for research contribution in the topics: Direct-buried cable & Electrical conductor. The organization has 267 authors who have published 311 publications receiving 3950 citations.

High-Pressure Gas-Filled Cable Impregnated witn Extra-High-Viscosity Oil

Abstract: 1. The 7-mile circuit of 120-kv high-pressure gas-filled cable installed in 1941 has fulfilled, during seven years of operation, the favorable expectations indicated in an AIEE paper presented in 1942.1 2. Several engineering features of high-pressure gas-filled cable, concerning which there has been no previous publication, have been investigated and are described. The results obtained are favorable. 3. It is believed that the characteristics of the high-viscosity saturant used are very significant with respect to the performance which this cable has given and which may be expected from it. Reasons for this are given, and added details of the oil characteristics are shown. 4. Further tests on an experimental field installation are reported. These show favorable results concerning cable operation at high temperature for both the preimpregnated and mass-impregnated types. 5. A new installation of twice the power-carrying capacity and twice the length of the 1941 installation is nearing completion. Half of the cable is made with preimpregnated tapes, and, except for conductor size and for shipment without lead sheath, is substantially the same as that of the 1941 installation. The construction of the other half of the cable involves mass impregnation of the paper with the high-viscosity oil, in a manner generally similar to the impregnation of solid-type cable. 6. The ability of the mass-impregnated cable to meet special loading and other operating conditions has been ascertained by the rigorous tests reported in this paper.

Test apparatus for optical waveguides

Abstract: This specification describes a novel apparatus and method for testing optical wave guides to determine the optical attenuation and to locate faults in the optical fiber. The light for test purposes is launched into the fiber by one or more light beams that surround the wave guides and that are focussed to converge from around the circumference and at the axis of the wave guide; the convergence being at low angles of incidence, so that some of the light enters the wave guide. The remaining light launched into the wave guide in opposite directions at a location, nearer to one end than to the other, is measured at opposite ends of the wave guide. The ratio of the light at the opposite ends of the wave guide and the difference in the length of travel of the light from the region of entry to each end is used to compute attenuation. Faults are found by internal reflections of the light beam in the wave guide.

Conductor for underground transmission of electric power

Abstract: A conductor adapted for underground transmission of alternating current consisting of a plurality of separate strands includes strands of copper clad with aluminum, the aluminum being about 10 percent to 20 percent of the cross-sectional area of the conductor. The conductor may be made up of aluminum-clad copper strands intermingled with all-copper strands, or strands of copper having oil-impervious coating, the strands being arranged so that the surface of each copper, or coated copper strand, is only in contact with the surface of an aluminum-clad strand. The strands are preferably grouped in segments and helically wound in each segment.