EP0112163A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fibre optic cable arrangements
Assignee: Focas Ltd
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Filing: 1983-12-13
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Granted: —
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Expires: 2003-12-13
Abstract
Abstract A fibre optic cable is helically wound on to an overhead high voltage conductor, and has an electrically nontracking outer jacket and is filled with protective material, or has a conductive outer jacket. The cable is guided off the conductor inside a conductive housing, and thence to earth potential along the inside of a nontracking shedded or convoluted tube.
Inventors
- 👤 Robin James Clabburn
- 👤 Alan Duncan Atkins
- 👤 John Sidney Thomas Looms
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:15
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4417; G02B6/442; G02B6/4421
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
32 words
A fibre optic cable suitable for use at high voltage, the cable comprising a substantially non-tracking outer jacket, a non-metallic strengthening member, at least one fibre optic element, and protective filler material.
Claim 2
Dependent Claim
32 words
A fibre optic cable suitable for use at high voltage, the cable comprising a substantially non-tracking outer jacket, a non-metallic strengthening member, at least one fibre optic element, and protective filler material.
Claim 3
Dependent Claim
33 words
A cable according to Claim 1, wherein said filler material is arranged to inhibit the formation of voids within the cable, or is arranged to inhibit the transmission of moisture within the cable.
Claim 4
Dependent Claim
27 words
A fibre optic cable suitable for use at high voltage, the cable comprising a conductive outer jacket, a strengthening member, and at least one fibre optic element.
Claim 5
Dependent Claim
27 words
A fibre optic cable suitable for use at high voltage, the cable comprising a conductive outer jacket, a strengthening member, and at least one fibre optic element.
Claim 6
Dependent Claim
55 words
A fibre optic cable suitable for extending between a region of high electric potential and a region of appreciably lower potential, wherein in the high potential region the cable has an outer jacket of electrically conductive material, and wherein in the lower potential region the cable has an outer jacket of substantially electrically non-tracking material:
Claim 7
Dependent Claim
55 words
A fibre optic cable suitable for extending between a region of high electric potential and a region of appreciably lower potential, wherein in the high potential region the cable has an outer jacket of electrically conductive material, and wherein in the lower potential region the cable has an outer jacket of substantially electrically non-tracking material:
Claim 8
Dependent Claim
26 words
A fibre optic cable, suitable for use at high voltages, that is arranged to be connected to earth potential at at least one of its ends.
Claim 9
Dependent Claim
26 words
A fibre optic cable, suitable for use at high voltages, that is arranged to be connected to earth potential at at least one of its ends.
Claim 10
Dependent Claim
37 words
An arrangement comprising high voltage equipment and a fibre optic cable adjacent to or in contact with said equipment, wherein the cable is arranged to be connected to earth potential at at least one of its ends.
Claim 11
Dependent Claim
37 words
An arrangement comprising high voltage equipment and a fibre optic cable adjacent to or in contact with said equipment, wherein the cable is arranged to be connected to earth potential at at least one of its ends.
Claim 12
Dependent Claim
33 words
A fibre optic cable arrangement for use at high voltages, wherein the ends of the cable are arranged to extend from high voltage to earth potential, said ends being provided with environmental protection.
Claim 13
Dependent Claim
33 words
A fibre optic cable arrangement for use at high voltages, wherein the ends of the cable are arranged to extend from high voltage to earth potential, said ends being provided with environmental protection.
Claim 14
Dependent Claim
43 words
A fibre optic cable arrangement for use at high voltages, wherein the cable is arranged to extend from high voltage to earth potential, and wherein means are provided at the ends of the cable to minimise adverse effects of flow of leakage current.
Claim 15
Dependent Claim
43 words
A fibre optic cable arrangement for use at high voltages, wherein the cable is arranged to extend from high voltage to earth potential, and wherein means are provided at the ends of the cable to minimise adverse effects of flow of leakage current.
Claim 16
Dependent Claim
27 words
An arrangement according to any of claims 5 to 8, wherein the cable comprises a fibre optic cable in accordance with any of claims 1,2,4, or 5.
Claim 17
Dependent Claim
55 words
An assembly comprising high voltage equipment, a fibre optic cable that in use is for location so as to be subject to the electric field of the equipment, and electrically conductive means for mounting on the cable so as to conduct to a point at earth potential any leakage current flowing along the cable jacket.
Claim 18
Dependent Claim
55 words
An assembly comprising high voltage equipment, a fibre optic cable that in use is for location so as to be subject to the electric field of the equipment, and electrically conductive means for mounting on the cable so as to conduct to a point at earth potential any leakage current flowing along the cable jacket.
Claim 19
Dependent Claim
61 words
An assembly comprising a high voltage conductor, a fibre optic cable located externally of the conductor so as to be subject to the electric field thereof, and electrical stress control means, wherein any electrical stress arising from the electric field produced by the conductor, to which the cable is subjected, is substantially insufficient to cause damage to the fibre optic cable.
Claim 20
Dependent Claim
61 words
An assembly comprising a high voltage conductor, a fibre optic cable located externally of the conductor so as to be subject to the electric field thereof, and electrical stress control means, wherein any electrical stress arising from the electric field produced by the conductor, to which the cable is subjected, is substantially insufficient to cause damage to the fibre optic cable.
Claim 21
Dependent Claim
35 words
An assembly according to claim 11, wherein the stress control means is arranged to enclose the fibre optic cable in the region where the cable leaves the immediate vicinity of the field of the conductor.
Claim 22
Dependent Claim
29 words
An assembly according to Claim 11 or 12, wherein the stress-control means comprises an electrically-conductive housing, and wherein the cable leaves the conductor in the vicinity of the housing.
Claim 23
Dependent Claim
39 words
An assembly according to Claim 13, wherein the housing is mounted on the conductor, and has a passage therethrough in which the high voltage conductor is located, and an outlet through which the fibre optic cable leaves the housing.
Claim 24
Dependent Claim
40 words
An assembly comprising a high voltage conductor and a fibre optic cable located so as to be subject to the electric field thereof, wherein the cable is loosely disposed within, and guided away from the conductor by, a tubular member.
Claim 25
Dependent Claim
40 words
An assembly comprising a high voltage conductor and a fibre optic cable located so as to be subject to the electric field thereof, wherein the cable is loosely disposed within, and guided away from the conductor by, a tubular member.
Claim 26
Dependent Claim
18 words
An assembly according to Claim 15, wherein the tubular member is convoluted, and/or has a shedded outer surface.
Claim 27
Dependent Claim
31 words
An assembly according to any of Claims 13 to 16, comprising a further electrically conductive housing spaced apart from said housing, for connecting the fibre optic cable to a lower potential.
Claim 28
Dependent Claim
25 words
An assembly according to any of Claims 10 to 17, wherein the fibre optic cable is in accordance with any of Claims 1 to 5.
Claim 29
Dependent Claim
79 words
An assembly according to any of Claims 10 to 17, wherein a first portion of the fibre optic cable is subject to the high voltage and has an electrically conductive outer surface, and wherein said first portion is spliced to a second portion of the fibre optic cable that extends away from the equipment such that it is subject to the field of the high voltage equipment only to a level that is substantially insufficient to cause damage thereto.
Claim 30
Dependent Claim
19 words
An assembly according to Claim 19, wherein the outer surface of said second cable portion is substantially electrically non-tracking.
Claim 31
Dependent Claim
18 words
An assembly according to any of Claims 11 to 20, comprising the electrically conducting means of Claim 10.
Claim 32
Independent Claim
87 words
A method of providing electrical protection for a fibre optic cable that is located externally of high voltage equipment so as to be subject to the electric field thereof, wherein in the region where the fibre optic leaves the immediate vicinity of the field of the equipment, the cable is provided with electrical stress control means such that any electrical stress, arising from the electric field produced by the equipment to which the cable is subjected, is substantially insufficient to cause damage to the fibre optic cable.
Claim 33
Independent Claim
87 words
A method of providing electrical protection for a fibre optic cable that is located externally of high voltage equipment so as to be subject to the electric field thereof, wherein in the region where the fibre optic leaves the immediate vicinity of the field of the equipment, the cable is provided with electrical stress control means such that any electrical stress, arising from the electric field produced by the equipment to which the cable is subjected, is substantially insufficient to cause damage to the fibre optic cable.
Claim 34
Dependent Claim
30 words
A method according to Claim 22, wherein the provision of said stress control means comprises disposing the cable within, and arranging for the cable to extend from, an electrically-conductive housing.
Claim 35
Dependent Claim
25 words
A method according to Claim 22 or 23, wherein said equipment with which the fibre optic cable is associated comprises an elongate high voltage conductor.
Claim 36
Dependent Claim
23 words
A fibre optic cable subject to a high voltage when electrically protected by a method according to any of Claims 22 to 24.
References Cited (Backward Citations)
No citation records indexed.
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