Abstract: A direction-changing arrangement for a three-phase pipe-type gas-pressurized electrical cable constituted principally by rigid straight pipe lengths connected in series and wherein the axes of the three phase conductors supported within the pipe when viewed in cross-section form a triangle. The desired change in direction is accomplished by interposing a spherical elbow pipe between two straight pipe lengths which includes a pair of branch pipe stubs connected to the ends of the adjoining straight pipe lengths, and three curved conductor members supported within the elbow and arranged symmetrically to the plane formed by the respective axes of the two branch pipe stubs which intersect at the center of the elbow. Three intermediate conductor sections are provided and these serve to interconnect the ends of the three inner conductors within the adjoining straight pipe lengths with the ends of the three curved conductor members within the elbow.

Abstract: A tube enclosed pressure gas insulated electrical cable has at least one conductor supported within a tubular enclosure by means of insulators, the conductor being sectionalized longitudinally and provided with expansion joints between the ends of adjacent sections to compensate for thermal expansion of the conductor. To protect the expansion joint and prevent it from being compressed and possibly collapsing under the inherent weight of the internal conductor structure when the cable is laid down a steep slope, a protective device is provided, this being constituted by a compression spring interposed between the ends of adjacent sections at the expansion joint for counteracting the weight of the conductor on the joint.