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US3667119A - Method of jointing and terminating electric cables - Google Patents

Method of jointing and terminating electric cables Download PDF

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Publication number
US3667119A
US3667119A US813621A US3667119DA US3667119A US 3667119 A US3667119 A US 3667119A US 813621 A US813621 A US 813621A US 3667119D A US3667119D A US 3667119DA US 3667119 A US3667119 A US 3667119A
Authority
US
United States
Prior art keywords
stranded conductor
conductor
metal
impregnant
heat sink
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.)
Expired - Lifetime
Application number
US813621A
Other languages
English (en)
Inventor
John Stephen Cleaver
Peter Guilford
Frederick James Kimpton
Thomas John Page
Norman Richard Steinberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balfour Beatty PLC
Original Assignee
BICC PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB5337268A external-priority patent/GB1262871A/en
Application filed by BICC PLC filed Critical BICC PLC
Application granted granted Critical
Publication of US3667119A publication Critical patent/US3667119A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
    • H02G15/24—Cable junctions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/029—Welded connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49179—Assembling terminal to elongated conductor by metal fusion bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.
    • Y10T29/49195—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting
    • Y10T29/49197—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting including fluid evacuating or pressurizing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49746—Repairing by applying fluent material, e.g., coating, casting

Definitions

  • the bonding process is preferably a welding process, suitably MIG welding, UNITEDSTATES PATENTS comprising a first stage in which the end of the stranded coni ductor is sealed by a layer of weld metal and a second stage in 464,475 12/1891 Flsher 174/21 which the connection is completed 2.799.721 7/1957 Floyd, Jr .29/630 F X 3,242,255 3/1966 Falkenstein et a1 ..174/20 X 20 Claims, 10 Drawing Figures PATENTEDJUN 6 I872 SHEET 1 or 3 METHOD OF JOINTING AND TERMINATING ELECTRIC CABLES i
  • This invention relates to a method of jointing and terminating electric cables having a conductor made up of a plurality of wires constituting a strand through the interstices of which a liquid impregnant for the cable dielectric can pass.
  • a liquid impregnant ismeant an impregnant which is liquid at the normal working temperature of the cable or which becomes liquid at a temperature which the strand may reach during the jointing or terminating process.
  • An important example of an impregnant which is liquid at the normal working temperature is the free-flowing oil used in oil-filled cables having longitudinal passages to facilitate access of the impregnant to all partsof the dielectric.
  • An example of an impregnant which becomes liquid at a temperature which the strand may reach during the jointing or terminating process is the compound, based on an oil-wax mixture, used in mass-impregnated non-draining (MIND) cables.
  • MIND mass-impregnated non-draining
  • the method in accordance with the invention comprises forming a heat sink surrounding the end of the stranded conductor and bonding the stranded conductor to a terminal or to another conductor by a process entailing the application in the molten state of an adherent body of metal to substantially the whole of the cut end face of the stranded conductor or between the cut end face of the stranded conductor and the end of the terminal or of the other conductor while removing liquid impregnant from the interstices between the wires of the stranded conductor in the region of a cut end thereof by applying vacuum to the stranded conductor.
  • the bonding process may be a soldering or brazing process but for maximum mechanical strength and reliability a welding process is preferred.
  • the arc welding technique known as M.l.'G. (metal/inert gas) welding, which entails transfer of metal from an electrode to the work across an arc struck in an inert atmosphere, normally argon, is especially suitable.
  • we prefer to build up thecoherent body of metal by a two stage welding process comprising a first stage in which a thin layer of metal is applied to the cut end of the stranded conductor to seal it, while the vacuum is maintained on the conductor end, followed by a second stage in which the stranded conductor end is again subjected to vacuum and a larger quantity of metal is applied to connect the conductor to another conductor or to a terminal.
  • this stage will usually resemble a casting operation, since it will entail filling a cavity bounded on at least one side by the cut end of a stranded conductor with molten metal.
  • the heat sink may take the form of a jig which prevents separation of the individual wires of the conductor during welding, and is afterwards removed.
  • the heat sink or part of it may become bonded to the weld, so forming a permanent part of the joint or termination.
  • the heat sink may comprise a metal sleeve (which may be solid, longitudinally cut, or longitudinally divided into two or more parts) contiguous with the stranded conductor, which becomes bonded to the weld, and an outer part which is removable.
  • the conductors will usually extend substantially horizontally, and an aperture will be provided through the surrounding wall of the heat sink (including any sleeve) for the introduction of bonding metal. Normally this aperture should be located at the top of the heat sink.
  • the conductor will usually extend vertically, and an annular heat sink then allows access for bonding metal through its open upper end.
  • the heat sink serves to prevent undue temperature rise at the cut-back end of the cable dielectric, minimizes annealing of the conductor ends, and (in the case of an arc welding process) prevents bum-back of individual wire ends which would result in inadequate welding.
  • Vacuum is preferably applied to the strand by a surrounding manifold, preferably in the form of an annular groove in the inner wall of the heat sink.
  • the end of the manifold further from the cut end of the stranded conductor is sealed by resilient means, e.g. a rubber washer, to increase the effectiveness of the suction at the cut end face of the conductor.
  • resilient means e.g. a rubber washer
  • FIGS. 1-5 show successive stages in a cable jointing method
  • FIGS. 6-8 show successive stages in one cable terminating method
  • FIGS. 9 and 10 show modified terminating methods at a stage corresponding to that of FIG. 8.
  • the jointing method to be described is especially suitable for jointing corresponding conductors of adjacent lengths of a multicore oil-filled cable of the kind having ducts or passages for the impregnant located in the interstices between the cores.
  • the cable ends are first cut back in the usual way, and if the conductors to be joined are non-circular, they are preferably circularized in the region where the joint is to be made, e.g. by squeezing between semi-circular dies.
  • a heat sink 1 made of a metal of good thermal conductivity is assembled about the conductor end.
  • the heat sink is of copper if the conductors to be joined are of aluminum or of mild steel or stainless steel if the conductors are of copper.
  • the end face 2 of the heat sink is inclined with respect to a plane perpendicular to the conductor axis and serves as a cutting jig for trimming the conductor end.
  • the position of the cut is such that, in the completed joint the end of the conductors are spaced further apart at their upper than their lower edges.
  • an angle of from l530 between the plane of the cut and the plane perpendicular to the conductor axis is suitable.
  • the heat sink has a cylindrical through bore 3 which make close contact with the peripheral surface of the stranded conductor 4, and the bore is formed with an annular groove 5 in, communication with an outlet 6 on the outer surface of the mold, so that heat sink can act also as a vacuum manifold through which oil can be extracted from the interstices between the wires of the strand.
  • a rubber washer 7 is interposed between the heat sink and the cut-back end of the cable dielectric 8 to seal the adjacent end of the manifold and so to increase the effectiveness of the suction at the cut end face 9 of the conductor. In addition, it acts as a jig to prevent splaying of thewires of the strand.
  • the outlet 6 is connected to a vacuum pump by which oil is drawn from the conductor until oil no longer flows from its cut surface. It has been found sufficient to reduce the pressure at the vacuum pump to a few millimeters of mercury (absolute), the pressure increasing to substantially atmospheric pressure at the cut end face of the stranded conductor.
  • the opposite end of the cable length is connected to an oil reservoir so that any oil withdrawn from the cable length by the vacuum pump is continuously replaced under hydrostatic pressure.
  • the cut surafce of the conductor is washed with a suitable volatile solvent for the oil, e.g. a few milliliters of petroleum ether. Clearance of excess solvent may be assisted, if required, by placing a cap over the flat end face 2 of the heat sink surrounding the cut end 9 of the conductor and/or by applying an inert gas under pressure to the cut end.
  • the cap may simply consist of an end plate and a peripheral wall in the form of a suitably shaped circular gasket which can be held under pressure against the end face 2 of the heat sink.
  • a thin adherent layer (FIG. 2) of weld metal is applied to the whole of the cut end face of the conductor by means of an MIG welding gun.
  • the hot heat sink is quickly removed from the end of the conductor.
  • it has sufficient thermal capacity to ensure that it acts alone to prevent an undue rise in the temperature of the conductor during welding, but it can if necessary be force cooled, for example by water circulation.
  • the second conductor 11 (FIG. 3) is similarly prepared, and the prepared ends of the two conductors are cleaned by wire brushing and washing with solvent. They are then brought into alignment with a small gap between them in another heat sink 12 generally similar to the heat sink 1 but in the form of a mold which surrounds both conductor ends and provides access to the V-shaped gap 13 between them, the lower part of the gap being closed by the bottom of the mold.
  • a vacuum pump is connected to annular grooves 14 in the bores of the two parts of the heat sink,and the washing of the prepared end surfaces of the conductors is repeated.
  • the weld formed between the two conductors is dressed down, e.g. by filing or milling, to the conductor diameter, prior to insulation of the joint in the usual way.
  • a separate manifold may be applied between that heat sink and the cutback end of the cable dielectric.
  • This manifold may for example be in the form of a thin-walled sleeve which surrounds and is sealed at each end by binding to the conductor and which has. intermediate its ends an enlargement which provides an annular passage between the sleeve and the conductor. The enlargement is provided withan outlet for connection to a vacuum pump.
  • a further possibility is to provide an additional manifold between the vacuum manifold and the end of the stranded conductor.
  • the additional manifold may be connected to a source of inert gas under pressure, before or during applica- ,tion of vacuum to the vacuum manifold, to facilitate oil clearance.
  • the termination method illustrated in FIGS. 6-8 is similar to the jointing method already described up to the stage shown in FIG. 2.
  • the prepared conductor end 16 is inserted in a composite heat sink 17 comprising an inner part 18 in the form of a sleeve of the same metal as the conductor, which is to become a permanent part of the termination, and an outer, removable part 19 in screw-threaded engagement with it.
  • a vacuum manifold 20 preferably also acts as an auxiliary heat sink. Cleaning of the conductor end is completed after assembly of the heat sink and with the vacuum applied, and after clearance of solvent the space 21 is filled with an adherent body of weld metal 22 (FIG. 7) using an MIG welding gun, so forming a permanent connection between the conductor end and the sleeve 18.
  • This sleeve is preferably longitudinally cut, the cut 23 preferably being located in the position where the depth of the weld metal 22 is smallest. This cut enables the sleeve 18 to contract with the weld metal as it cools, so facilitating removal of the outer part 19 of the heat sink.
  • a terminal stem 24 (FIG. 8) is screwed onto the sleeve 18, the mating threads preferably being electrotinned and sweated to ensure a sound connection, and the termination insulated in any conventional way.
  • the terminal stem 24 may be of a metal dissimilar to the metal of the stranded conductor, e.g. of copper if the stranded conductor is of aluminum this avoids the problem of bimetallic corrosion where, as is usual, the termination is provided with an insulator having an exposed end-fitting of a copper-base alloy, and enables a connection relying upon mechanical pressure to be used at the other end of the terminal stem.
  • FIGS. 9 and 10 show modified terminations which also permit use of copper terminal stems on altuninum conductors; in both cases the whole of the heat sink 17 becomes a permanent part of the termination, and the terminal stem 24 is bolted to it.
  • the heat sink comprises an inner sleeve 25 of aluminum secured in an outer body 26 of copper by a preformed, permanent, electrotinned and sweated screwed connection.
  • aluminum sleeve 27 is secured in copper body 28 by a pressure welding process, e.g. friction welding or flash butt welding, as a preliminary step, preferably carried out in the factory.
  • the cleaning techniques so far described will usually be inadequate, and appropriate modifications will be needed.
  • the wires of the strand may be slightly separated and the bulk of the impregnant between them melted out by gentle heat from a propane torch. Residue is then removed by washing several times with a suitable hot solvent (for example a free-flowing insulating oil), preferably aided by brushing. After washing with a volatile solvent e. g.naphtha) to remove the cleaning solvent the heat sink (1) may be applied, and jointing or termination then proceeds as already described.
  • a suitable hot solvent for example a free-flowing insulating oil
  • the method in accordance with the present invention may be used in jointing and terminating cables having a hollow stranded conductor, as is more fully described and claimed in our U.S. application No. 813,523 filed on the same day as this Application.
  • connecting is used to embrace both jointing and terminating.
  • a method of connecting an electric cable comprising (a) an outer sheath, (b) a liquid-impregnated dielectric and (c) at least one conductor in the form of a strand through the interstices of which liquid impregnant for the cable dielectric can pass, comprising the steps of 1. applying to the cut end of the impregnant-containing stranded conductor and another conductive member a mould that acts as a heat sink and forms a manifold surrounding said stranded conductor in a region removed from said end and 2.
  • a method as claimed in claim 1 comprising the preliminary step of cutting the end of the stranded conductor so that its end face is inclined at an angle of from l5-30 with respect to a plane perpendicular to the conductor axis.
  • a method as claimed in claim 5 comprising sealing the end of the manifold further from the cut end of the stranded conductor by resilient means to increase the effectiveness of the suction at the cut end face of the conductor.
  • a method as claimed in claim 1 comprising washing the end of the stranded conductor with a solvent for the liquid impregnant prior to bonding.
  • a method of connecting an electric cable comprising (a) an outer sheath, (b) a liquid-impregnated dielectric, and (c) at least one conductor in the form of a strand through the interstices of which liquid impregnant for the cable dielectric can pass, comprising the steps of l. surrounding the cut end of the impregnant-containing stranded conductor with a heat sink comprising a metal sleeve contiguous with the stranded conductor and 2.
  • a method of jointing an electric cable comprising (a) an outer sheath, (b) a liquid-impregnated dielectric and (c) at least one conductor in the form of a strand through the interstices of which liquid impregnant for the cable dielectric can pass, comprising the steps of l. forming a first heat sink surrounding the cut end of the impregnant-containing stranded conductor,
  • a method of terminating an electric cable comprising (a) an outer sheath, (b) a li uid-impregnated dielectric and (c) at least one conductor in t e form 0 a strand through the interstices of which liquid impregnant for the cable dielectric can pass, comprising the steps of l. forming a first heat sink surrounding the cut end of the impregnant-containing stranded conductor,
  • a method as claimed in claim 19 in which vacuum is applied to the stranded conductor by means of a surrounding manifold formed by an annular groove in the bore of the heat sink.

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  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Processing Of Terminals (AREA)
  • Wire Processing (AREA)
  • Earth Drilling (AREA)
US813621A 1968-04-11 1969-04-04 Method of jointing and terminating electric cables Expired - Lifetime US3667119A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB5337268A GB1262871A (en) 1968-04-11 1968-04-11 Method of jointing and terminating electric cables
GB1748468 1968-04-11
GB2749968 1968-06-10
GB2750068 1968-06-10
GB5337168 1968-11-11

Publications (1)

Publication Number Publication Date
US3667119A true US3667119A (en) 1972-06-06

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US813621A Expired - Lifetime US3667119A (en) 1968-04-11 1969-04-04 Method of jointing and terminating electric cables
US813523A Expired - Lifetime US3688397A (en) 1968-04-11 1969-04-04 Method of jointing and terminating electric cables
US00255560A Expired - Lifetime US3718273A (en) 1968-04-11 1972-05-22 Kit of parts for use in jointing electric cables

Family Applications After (2)

Application Number Title Priority Date Filing Date
US813523A Expired - Lifetime US3688397A (en) 1968-04-11 1969-04-04 Method of jointing and terminating electric cables
US00255560A Expired - Lifetime US3718273A (en) 1968-04-11 1972-05-22 Kit of parts for use in jointing electric cables

Country Status (6)

Country Link
US (3) US3667119A (de)
CA (2) CA924884A (de)
DE (2) DE1918167C3 (de)
FR (2) FR2006069A1 (de)
NL (2) NL6905621A (de)
SE (1) SE365658B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
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US3787607A (en) * 1972-05-31 1974-01-22 Teleprompter Corp Coaxial cable splice
US3795758A (en) * 1973-06-08 1974-03-05 Anaconda Co High voltage cable joint and heat sink sleeve for use therein
US3934786A (en) * 1974-11-20 1976-01-27 Jerome Underground Transmission Equipment, Inc. Method and apparatus for splicing and welding stranded electrical cables
US4043031A (en) * 1974-08-02 1977-08-23 Felten & Guilleaume Carlswerk Ag Method of manufacturing internally cooled high-energy cable
US6105247A (en) * 1997-06-16 2000-08-22 Alcatel Method of making a cable joint
US10319488B2 (en) * 2015-08-19 2019-06-11 Nkt Hv Cables Gmbh Conductor for a power transmission cable and a process for the production of the conductor

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ZA711122B (en) * 1970-03-09 1971-11-24 British Insulated Callenders Improvements in cable joints
US3790737A (en) * 1972-03-29 1974-02-05 Utec Constructors Inc Preparing cable for splicing
DE19513462A1 (de) * 1995-04-08 1996-10-10 Abb Patent Gmbh Vorrichtung zur Verbindung zweier Kabelenden
US8572838B2 (en) 2011-03-02 2013-11-05 Honeywell International Inc. Methods for fabricating high temperature electromagnetic coil assemblies
US8466767B2 (en) 2011-07-20 2013-06-18 Honeywell International Inc. Electromagnetic coil assemblies having tapered crimp joints and methods for the production thereof
US8860541B2 (en) 2011-10-18 2014-10-14 Honeywell International Inc. Electromagnetic coil assemblies having braided lead wires and methods for the manufacture thereof
US8754735B2 (en) 2012-04-30 2014-06-17 Honeywell International Inc. High temperature electromagnetic coil assemblies including braided lead wires and methods for the fabrication thereof
US9076581B2 (en) 2012-04-30 2015-07-07 Honeywell International Inc. Method for manufacturing high temperature electromagnetic coil assemblies including brazed braided lead wires
US9027228B2 (en) 2012-11-29 2015-05-12 Honeywell International Inc. Method for manufacturing electromagnetic coil assemblies
US9722464B2 (en) 2013-03-13 2017-08-01 Honeywell International Inc. Gas turbine engine actuation systems including high temperature actuators and methods for the manufacture thereof
CN105345413B (zh) * 2015-12-04 2017-07-04 常州信息职业技术学院 焊接锚链的生产工艺

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US2015542A (en) * 1935-09-24 Means for temporarily closing the
US464475A (en) * 1891-12-01 Henry w
US1952097A (en) * 1932-05-20 1934-03-27 Gen Electric Stop joint for electric cables
GB508036A (en) * 1937-12-24 1939-06-26 Standard Telephones Cables Ltd Improvements in or relating to electric cables
US2799721A (en) * 1953-01-09 1957-07-16 Amp Inc Connector
DE1146939B (de) * 1961-08-22 1963-04-11 Siemens Ag Endenzubereitung von mehrdraehtigen Leitern elektrischer Kabel mit einem mit fluessigen bis zaehfluessigen Massen getraenkten Dielektrikum
US3321568A (en) * 1963-04-10 1967-05-23 Pirelli Method and apparatus for joining together sections of oil-filled cable
US3264697A (en) * 1963-04-17 1966-08-09 Roehr Prod Co Inc Method of forming composite metal bodies
US3242255A (en) * 1964-02-03 1966-03-22 Cons Edison Co New York Inc Cable terminal assembly
US3469307A (en) * 1964-11-06 1969-09-30 British Insulated Callenders Mineral insulated electric cables
US3485935A (en) * 1965-11-04 1969-12-23 Nl Kabelfabrieken Nv High voltage cable joint
US3453372A (en) * 1966-05-25 1969-07-01 British Insulated Callenders Joints for electric cables
US3524038A (en) * 1967-05-05 1970-08-11 Arcair Co Method and apparatus for cutting and gouging metal employing suction to remove debris
US3555620A (en) * 1967-10-17 1971-01-19 Harry R Bucy Mold for pressure injected material vented through ejector pin guides

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787607A (en) * 1972-05-31 1974-01-22 Teleprompter Corp Coaxial cable splice
US3795758A (en) * 1973-06-08 1974-03-05 Anaconda Co High voltage cable joint and heat sink sleeve for use therein
US4043031A (en) * 1974-08-02 1977-08-23 Felten & Guilleaume Carlswerk Ag Method of manufacturing internally cooled high-energy cable
US3934786A (en) * 1974-11-20 1976-01-27 Jerome Underground Transmission Equipment, Inc. Method and apparatus for splicing and welding stranded electrical cables
US6105247A (en) * 1997-06-16 2000-08-22 Alcatel Method of making a cable joint
US10319488B2 (en) * 2015-08-19 2019-06-11 Nkt Hv Cables Gmbh Conductor for a power transmission cable and a process for the production of the conductor

Also Published As

Publication number Publication date
FR2006069A1 (de) 1969-12-19
CA934531A (en) 1973-10-02
CA924884A (en) 1973-04-24
DE1918167C3 (de) 1974-10-24
DE1918168C3 (de) 1974-10-10
DE1918168B2 (de) 1974-03-14
DE1918168A1 (de) 1969-12-18
DE1918167A1 (de) 1969-10-23
FR2006070A1 (de) 1969-12-19
NL6905621A (de) 1969-10-14
DE1918167B2 (de) 1974-03-28
US3718273A (en) 1973-02-27
SE365658B (de) 1974-03-25
US3688397A (en) 1972-09-05
NL6905622A (de) 1969-10-14

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