DE2733607A1 - Communications cable with HV overhead line - is optical fibre and/or insulated copper conductor inside hollow line conductor - Google Patents

Abstract

The high voltage overhead line has individual wires laid around a central tensile load carrying core. The insulated communications cable is threaded through one of the wires which is hollow. It can be pulled clear at points where it is necessary to make a splice or terminal. The cable may be an insulated copper wire or an optical fibre. Alternatively a metal core may be included with a light fibre for supplying power to optical repeater amplifiers along the cable. The cable is normally arranged with some slack in the central tube to give the required extra length for making joints. An optical fibre must be slack to accommodate changes in wire length due to temperature changes.

Description

Licentia Patent-Verwaltungs-GmbH NE2 ~ BK / Sch / jo Communication cable

In the case of high-voltage overhead lines, the individual ropes are made from solid wire. In certain embodiments the individual ropes are also stranded around a tubular support body. One has already in the hollow

Carrying body an optical fiber arranged to thereby

g to get an additional communication cable. It is

however, it is very difficult to decouple the optical fiber or to make splice connections.

The present invention has the task of avoiding the disadvantages.

Starting from a communication cable with a high-voltage overhead line, whose rope consists of stranded individual wires is proposed according to the invention for this purpose,

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that at least one core insulated from the tube is arranged within a hollow individual wire.

The invention is to be explained in more detail below.

The communication cable according to the invention is for example realized by attaching an insulated wire within a hollow individual wire, which, for example, -% se can be designed as an insulated copper wire. In a preferred embodiment is the insulated wire formed by an optical fiber. It is understood that within a single hollow wire several insulated wires can be provided and that such additional insulated wires also in several individual wires Cores can be inserted.

After the individual wire has been cut, the insulated core inside _ can come out of the metal tube so far be drawn that the ends of the fiber in a known manner to establish a splice or to connect to active switching elements can be edited. This assumes that the insulated wire has a corresponding excess length is loosely arranged in the metal tube or that compensating lengths are present at predetermined intervals. the

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'Insulated wire must already take into account temperature-dependent Changes in length of the rope with a corresponding to the excess length are arranged relatively loosely in the hollow individual wire be·

For the remote supply of intermediate amplifiers as well as for the transmission of additional control signals, one can use If an optical fiber is wounded in the hollow individual wire, also provide at least one insulated metal wire.

The «improper training of the communication cable offers the possibility of a simple coupling or decoupling of the additionally arranged communication line, whereby the Attaching the insulated wire is expediently carried out at the same time as the phase or neutral wire is produced will.

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Claims (1)

Patent-Verwaltungs-GmbH NE2-BK / Sch / jo BK 76/108 Claims (1. / Naclirichfeenkabel with a high-voltage overhead line, whose Rope contains stranded individual wires, characterized in that at least one of the hollow individual wire Single-wire insulated core is arranged 2. Cable according to claim 1, characterized in that the wire is designed as an insulated copper wire. 3. Cable according to claim 1, characterized in that the wire is formed by an optical fiber. ( k, cable according to claim 3t, characterized in that the light ij guide fiber according to the temperature-related change in length Ii of the rope with excess length is loosely arranged in the tube. f 5. Cable according to claim 3 or k, characterized in that it ■ ■ I in addition to the optical fiber, at least one insulated metal wire is arranged in the hollow single wire. 809886/0197