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.

Flame retardant inside wiring cable made with an annealed metal sheath

Abstract: This specification describes an improved method for making fire-resistant communication cables that have a core which includes a multitude of individual conductors or pairs with insulation surrounding some or all of the conductors. The conductors are enclosed in a metal sheath that has a welded seam and that is annealed to maintain the flexibility of the cable. The sheath is of larger diameter of the core when welded, but is drawn down to a reduced diameter that hugs the core prior to the annealing. Heat insulation is wrapped around the core to protect the insulation on the conductors from the heat that is used to anneal the sheath. The purpose of the construction is to provide indoor cable that does not propagate flames from a burning area in a building into adjacent non-burning areas. The cable sheath is purposely not bonded to the core to facilitate sheath removal for ease of terminating the cable.

Ethylene-propylene rubber insulated cable with cross-linked polyethylene strand shielding

Abstract: A high-tension cable is made with a strand shield of crosslinked, conductive polyethylene compound and with insulation that is a proprietary compound of ethylene-propylene rubber. The insulation is approximately 48 percent ethylene-propylene amorphous copolymer; approximately 12 percent crystalline polyethylene homopolymer; and reinforcing fillers to provide adequate physical properties. The shield and insulation are extruded and cured simultaneously to obtain void-free bonding.

Life Expectancy of Crosslinked Polyethylene Insulated Cables Rated 15 to 35 kV

Abstract: Ever since it was demonstrated that installed extruded dielectric underground distribution cables lose significant dielectric strength due to formation of electrochemical trees in the insulation users have sought a means to determine the remaining useful service life. Subjecting miniature and full size crosslinked polyethylene (XLPE) insulated cables to accelerated aging tests and comparing the results to aging of I5kV cables removed from service the authors show how the remaining service life of installed cables can be estimated from dissipation factor measurements. This non-destructive test is made utilizing the available system voltage and would require the cable to be disconnected only several hours from service. The method devised to estimate service life is applicable to both polyethylene (PE) and XLPE insulated cables and its accuracy will be increased as more dissipation factor data is taken on cables now in service.