US20010053269A1 - Light waveguide cable for use in high-tension systems - Google Patents
Light waveguide cable for use in high-tension systems Download PDFInfo
- Publication number
- US20010053269A1 US20010053269A1 US09/493,354 US49335400A US2001053269A1 US 20010053269 A1 US20010053269 A1 US 20010053269A1 US 49335400 A US49335400 A US 49335400A US 2001053269 A1 US2001053269 A1 US 2001053269A1
- Authority
- US
- United States
- Prior art keywords
- light waveguide
- cable
- cable according
- cladding
- waveguide cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005253 cladding Methods 0.000 claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 229920001169 thermoplastic Polymers 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- 229920002313 fluoropolymer Polymers 0.000 claims description 5
- 239000004811 fluoropolymer Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 229920001179 medium density polyethylene Polymers 0.000 claims description 4
- 239000004701 medium-density polyethylene Substances 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000006233 lamp black Substances 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims 1
- 239000004707 linear low-density polyethylene Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4416—Heterogeneous cables
- G02B6/4417—High voltage aspects, e.g. in cladding
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4416—Heterogeneous cables
- G02B6/4422—Heterogeneous cables of the overhead type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
- G02B6/4433—Double reinforcement laying in straight line with optical transmission element
Definitions
- the present invention is directed to a light waveguide cable composed of at least one light waveguide, a light waveguide bundle or a light waveguide ribbon having a cable cladding of plastic for utilization on a line cable of a high-tension system.
- WO 96/38892 discloses a method for the installation of a light waveguide cable on an overhead high-tension line.
- the light waveguide cable for example an optical overhead cable
- the light waveguide cable is secured with the assistance of at least one cable strapped along a high-tension cable, whereby the cable strap is wrapped around the high-tension cable and the light waveguide cable with a wrapping machine.
- EP 0 321 278 A1 discloses a cable combination composed of an optical cable and an electrical conductor, for example a high-tension cable.
- the optical cable is helically wound around the electrical conductor.
- the optical cable is composed of a tubular envelope in which one or more light waveguides or light waveguide ribbons are introduced, so that they can move therein.
- a gel-like filling compound can also be provided.
- the envelope is surrounded with a tensile cladding and, potentially, with a further sheath of heat-resistant material.
- Polyolefines such as polyethylene or medium density (MDPE), high-density polyethylene (HDPE) or polypropylene (PP), are usually employed as materials for enveloping optical cables. These materials are potentially ultraviolet-stabilized with the addition of lampblack. Such envelopes are adequate, for example, for mounting at or, respectively, on phase cables of high-tension systems up to a voltage value of approximately 30 kV. Given higher voltages, however, Corona discharges occur that can lead to the premature destruction of the envelope or, respectively, the cable cladding.
- MDPE medium density
- HDPE high-density polyethylene
- PP polypropylene
- the object of the present invention is to create a light waveguide cable whose cable cladding is protected against destruction by Corona discharges.
- This object is achieved with a light waveguide cable of a species initially cited in that a Corona-resistant layer is applied on the cable cladding.
- An optical cable having a known structure is cladded with a Corona-resistant skin layer according to the present invention, so that the occurring Corona discharges can no longer destroy the cable cladding. The risk of premature destruction of the cable cladding composed of the previously standard plastic materials is thereby prevented.
- High-temperature thermoplastics such as, for example, fluoropolymers, silicones and polyimides as well as copolymers of these material compounds are particularly suited for such a skin layer.
- the necessary layer thickness for the skin layer amounts to 100 ⁇ m through 2 mm.
- This skin layer is applied as a surface-covering on the cable cladding, preferably by coextrusion during the manufacturing of the optical cable.
- the Figure is a cross sectional view of a light waveguide cable according to the present invention.
- optical cable OK is composed of the known basis elements, namely light waveguides, light waveguide bundles or light waveguide ribbons, which are illustrated at LWL and are loosely introduced within a tubular sheath H.
- the tubular sheath H is also filled with a gel-like filling material in way that is known per se, whereby the mobility of the light waveguide elements LWL are preserved.
- a cable cladding KM of plastic for example of polyolefine, such as, for example, low-density polyethylene (LDPE), medium-density polyethylene (MDPE) or linear low-density polyethylene (LLDPE) is then applied against the sheath H.
- polyolefine such as, for example, low-density polyethylene (LDPE), medium-density polyethylene (MDPE) or linear low-density polyethylene (LLDPE) is then applied against the sheath H.
- LDPE low-density polyethylene
- MDPE medium-density polyethylene
- LLDPE linear low-density polyethylene
- tensile elements ZE are usually also embedded in the cable cladding KM and proceed longitudinally along the cable.
- a Corona-resistant skin layer KS of the above-mentioned materials is then arranged over this cable cladding KM. This is preferably produced by a coextrusion together with the cable cladding.
Abstract
Description
- The present invention is directed to a light waveguide cable composed of at least one light waveguide, a light waveguide bundle or a light waveguide ribbon having a cable cladding of plastic for utilization on a line cable of a high-tension system.
- WO 96/38892 discloses a method for the installation of a light waveguide cable on an overhead high-tension line. The light waveguide cable, for example an optical overhead cable, is secured with the assistance of at least one cable strapped along a high-tension cable, whereby the cable strap is wrapped around the high-tension cable and the light waveguide cable with a wrapping machine. What is referred to as an ADL cable (ADL=All-Dielectric) is especially suited for this purpose. It is composed of a tubular envelope into which the light waveguide, light waveguide ribbon or light waveguide bundle are loosely introduced. A cable cladding of plastic is located thereover and a gel-like substance can also be introduced into the interior of the tubular envelope, whereby the mobility of the light waveguide is preserved.
- EP 0 321 278 A1 discloses a cable combination composed of an optical cable and an electrical conductor, for example a high-tension cable. The optical cable is helically wound around the electrical conductor. The optical cable is composed of a tubular envelope in which one or more light waveguides or light waveguide ribbons are introduced, so that they can move therein. A gel-like filling compound can also be provided. The envelope is surrounded with a tensile cladding and, potentially, with a further sheath of heat-resistant material.
- Polyolefines, such as polyethylene or medium density (MDPE), high-density polyethylene (HDPE) or polypropylene (PP), are usually employed as materials for enveloping optical cables. These materials are potentially ultraviolet-stabilized with the addition of lampblack. Such envelopes are adequate, for example, for mounting at or, respectively, on phase cables of high-tension systems up to a voltage value of approximately 30 kV. Given higher voltages, however, Corona discharges occur that can lead to the premature destruction of the envelope or, respectively, the cable cladding.
- The object of the present invention is to create a light waveguide cable whose cable cladding is protected against destruction by Corona discharges. This object is achieved with a light waveguide cable of a species initially cited in that a Corona-resistant layer is applied on the cable cladding. An optical cable having a known structure is cladded with a Corona-resistant skin layer according to the present invention, so that the occurring Corona discharges can no longer destroy the cable cladding. The risk of premature destruction of the cable cladding composed of the previously standard plastic materials is thereby prevented. High-temperature thermoplastics, such as, for example, fluoropolymers, silicones and polyimides as well as copolymers of these material compounds are particularly suited for such a skin layer. The necessary layer thickness for the skin layer amounts to 100 μm through 2 mm. This skin layer is applied as a surface-covering on the cable cladding, preferably by coextrusion during the manufacturing of the optical cable.
- Other advantages and features of the invention will be readily apparent from the following description of the preferred embodiments, the drawing and claims.
- The Figure is a cross sectional view of a light waveguide cable according to the present invention.
- The principles of the present invention are particularly useful when incorporated in an optical cable OK with a Corona-resistant skin layer KS of the invention. This optical cable OK is composed of the known basis elements, namely light waveguides, light waveguide bundles or light waveguide ribbons, which are illustrated at LWL and are loosely introduced within a tubular sheath H. As needed, the tubular sheath H is also filled with a gel-like filling material in way that is known per se, whereby the mobility of the light waveguide elements LWL are preserved. A cable cladding KM of plastic, for example of polyolefine, such as, for example, low-density polyethylene (LDPE), medium-density polyethylene (MDPE) or linear low-density polyethylene (LLDPE) is then applied against the sheath H. Given an optical cable that, for example, is to be utilized at a line cable of a high-tension system, tensile elements ZE are usually also embedded in the cable cladding KM and proceed longitudinally along the cable. According to the present invention, a Corona-resistant skin layer KS of the above-mentioned materials is then arranged over this cable cladding KM. This is preferably produced by a coextrusion together with the cable cladding.
- Although various minor modifications may be suggested by those versed in the art, it should be understood that we wish to embody within the scope of the patent granted hereon all such modifications as reasonably and properly come within the scope of our contribution to the art.
Claims (15)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19903596 | 1999-01-29 | ||
DE19903596 | 1999-01-29 | ||
DE19903596.2 | 1999-01-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010053269A1 true US20010053269A1 (en) | 2001-12-20 |
US6434304B2 US6434304B2 (en) | 2002-08-13 |
Family
ID=7895822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/493,354 Expired - Lifetime US6434304B2 (en) | 1999-01-29 | 2000-01-28 | Light waveguide cable for use in high-tension systems |
Country Status (4)
Country | Link |
---|---|
US (1) | US6434304B2 (en) |
EP (1) | EP1024381A1 (en) |
AR (1) | AR022233A1 (en) |
BR (1) | BR0000222A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6567592B1 (en) * | 2000-09-29 | 2003-05-20 | Corning Cable Systems Llc | Optical cables with flexible strength sections |
US8885999B2 (en) * | 2010-03-19 | 2014-11-11 | Corning Cable Systems Llc | Optical USB cable with controlled fiber positioning |
AU2012268440A1 (en) | 2011-06-10 | 2014-01-09 | Corning Cable Systems Llc | Fiber optic cables allowing fiber translation to reduce bend attenuation |
US8676012B2 (en) | 2012-01-20 | 2014-03-18 | Corning Cable Systems Llc | Fiber optic cable for very-short-distance networks |
US9170389B2 (en) | 2012-08-28 | 2015-10-27 | Corning Cable Systems Llc | Hybrid fiber optic cable systems |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3504041A1 (en) | 1984-06-29 | 1986-01-02 | Siemens AG, 1000 Berlin und 8000 München | OPTICAL CABLE FOR HIGH VOLTAGE LEADERS |
GB2213952A (en) * | 1987-12-18 | 1989-08-23 | Focas Ltd | Optical fibre cable helically wound on electrical conductor |
DE4318906A1 (en) * | 1993-06-07 | 1994-12-08 | Siemens Ag | Process for producing an optical insulated conductor with two protective sheaths |
DE4406690A1 (en) * | 1994-03-01 | 1995-09-07 | Siemens Ag | Co-extruding optical fibre with core, sheath and tensile reinforcement |
IN187896B (en) * | 1995-06-02 | 2002-07-20 | Siemens Ag | |
DE19718476A1 (en) * | 1997-04-30 | 1998-11-05 | Siemens Ag | Light waveguide |
JP2001510904A (en) * | 1997-07-18 | 2001-08-07 | ピレリー・カビ・エ・システミ・ソチエタ・ペル・アツィオーニ | Optical fiber cable with high anti-tracking properties |
US6108475A (en) * | 1997-12-22 | 2000-08-22 | Lucent Technologies Inc. | Optical fiber cable products having a stress indicating capability and process for making same |
US6215931B1 (en) * | 1999-01-26 | 2001-04-10 | Alcatel | Flexible thermoplastic polyolefin elastomers for buffering transmission elements in a telecommunications cable |
-
2000
- 2000-01-10 AR ARP000100083A patent/AR022233A1/en not_active Application Discontinuation
- 2000-01-11 EP EP00100510A patent/EP1024381A1/en not_active Withdrawn
- 2000-01-28 US US09/493,354 patent/US6434304B2/en not_active Expired - Lifetime
- 2000-01-28 BR BR0000222-4A patent/BR0000222A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BR0000222A (en) | 2000-09-12 |
EP1024381A1 (en) | 2000-08-02 |
US6434304B2 (en) | 2002-08-13 |
AR022233A1 (en) | 2002-09-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GAO, ZHAN;GREINER, ULRICH;KAMPS, RAINER;REEL/FRAME:010908/0065 Effective date: 20000208 |
|
AS | Assignment |
Owner name: CORNING CABLE SYSTEMS LLC, NORTH CAROLINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SIEMENS AKTIENGESELLSCHAFT;REEL/FRAME:012805/0438 Effective date: 20000131 |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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AS | Assignment |
Owner name: CCS TECHNOLOGY, INC., DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SIEMENS AKTIENGESELLSCHAFT;REEL/FRAME:013362/0204 Effective date: 20000131 |
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FPAY | Fee payment |
Year of fee payment: 12 |