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.

Procedure to increase voltage rating of field installed 15 kV cable by replacement of nitrogen with sulfur hexafluoride

Abstract: This paper presents the results of a study to establish the feasibility of increasing the operating voltage and MVA rating of an installed 15 kV cable system by replacing the nitrogen with sulfur hexafluoride gas The results of laboratory and field studies indicate that such a conversion is feasible and can be accomplished in the field if the ionization starting potential of the cable is measured during conversion to prove the safe operation at the higher voltage It is concluded that the ionization starting potential of a 15 kV cable system can be raised by a factor of approximately 15 at 15 psig (104 × 104N/m2) after conversion to sulfur hexafluoride gas

Laboratory Evaluation of 345-kY Cable 2 High-Pressure Oil-Filled Pipe-Type After Field Testing at Cornell University

Abstract: Upon completion of the 345-kV field test at the Cornell Test Station, representative sections of the high-pressure pipe-type cable supplied for the test by the authors' company were subjected to laboratory evaluation. No indications of instability or significant deterioration resulting from the field test were found. The returned cable withstood the standard high-voltage-time test for new cable and had slightly lower power factor at all temperatures than it had before being tested, as well as essentially unchanged radial power-factor distribution. Mechanical properties and dielectric strength of the paper were not significantly affected. No electrical disturbance of any kind was found in the cable proper or in the joints; however, there was slight carbonization in the vicinity of electrode interruptions provided for power-factor measurement and also at the base of the paper buildup in one of the terminals. Both the-saturating oil and the pipe oil were in essentially the original condition. Apparently, however, some of the pipe oil had migrated into the cable from the potheads because of expansion and contraction incident to load cycling.

Design and Installation of a 138-KV, High-Pressure, Gas-Filled Pipe Cable Utilizing Segmental Aluminium Conductors

Abstract: This paper presehits the results of further developments of 138-kV cable impregnated with extra-high-viscosity oil, as well as those of joining aluminum conductors and terminal ferrules by the inert gas shielded arc welding method. Welding the conductors in the presence of heavy oil had presented the chief deterrent to commercial utilization of cable containing alumliinum conductors. Success of these investigations has resulted in installation of a 2.74 mile (4.41 km) portion of The Detroit Edison Company Medina-Stephens 120-kV line, commissioned in November 1971. That installation is reported upon herein.