EP2662932B1 - Stromleitungskupplung - Google Patents

Stromleitungskupplung Download PDF

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Publication number
EP2662932B1
EP2662932B1 EP13167332.9A EP13167332A EP2662932B1 EP 2662932 B1 EP2662932 B1 EP 2662932B1 EP 13167332 A EP13167332 A EP 13167332A EP 2662932 B1 EP2662932 B1 EP 2662932B1
Authority
EP
European Patent Office
Prior art keywords
power line
coupler
cables
clamp
line coupler
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.)
Active
Application number
EP13167332.9A
Other languages
English (en)
French (fr)
Other versions
EP2662932A3 (de
EP2662932A2 (de
Inventor
Robert James Battle
Pat Pearl
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.)
Sicame Australia Pty Ltd
Original Assignee
Sicame Australia Pty Ltd
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 US13/467,154 external-priority patent/US20120276789A1/en
Application filed by Sicame Australia Pty Ltd filed Critical Sicame Australia Pty Ltd
Publication of EP2662932A2 publication Critical patent/EP2662932A2/de
Publication of EP2662932A3 publication Critical patent/EP2662932A3/de
Application granted granted Critical
Publication of EP2662932B1 publication Critical patent/EP2662932B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical

Definitions

  • the present invention generally relates to a power line coupler, such as an overhead power line coupler for example.
  • An overhead power line is an electric power transmission line suspended by towers or poles.
  • Overhead power lines are generally the lowest-cost method of transmission for large quantities of electric power in the range 1kV to 800kV. In practice, many overhead power line cables are bare conductors which make them hazardous.
  • a known power line coupler for coupling a pair of cables together includes a helical conductor which is tightly wound from one cable onto the other.
  • the repaired and sagging power line can swing in the wind (e.g. during subsequent storms) and the helical conductor can slip from a cable about which it is wound.
  • Another power line coupler includes a compressible conductor tube for receiving the cables. Once the cables are inserted, the tube can be compressed and deformed so as to clamp the cables therein.
  • the cable thicknesses are prone to variation owing to different manufacturer's specifications. Accordingly, it may be difficult to insert some thicker cables into the tube whereas the tube may be inadequately clamped to other thinner cables which can make the joint susceptible to breakage once again.
  • US 2011/092112 discloses a power line coupler for coupling a pair of cables together.
  • the coupler includes at least one protector for protecting the cables and a clamp for clamping the protector and cables together.
  • One or more profusions in the form of movable fasteners are provided about which the cables can be bent (see also below). This document is considered as disclosing the preamble of independent claim 1.
  • a power line coupler as defined in independent claim 1.
  • Each protector may include a protection member for protecting a cable from a fastener.
  • the protection member may be formed from deformable aluminum and/or may be coated with a friction enhancing compound to impede extraction of the cables.
  • the protrusions may be located on one side of the coupler and the coupler may furthermore comprises a plurality of fasteners located on the other side of the coupler.
  • the protrusions may bend each cable to be corrugated and resist extraction from the clamp.
  • the clamp may include alternately disposed fasteners.
  • the fasteners may be alternately disposed on the same side of the clamp.
  • the clamp may include fasteners, each fastener including a head from which a threaded shaft extends, the head defining a recess such that a tip of the head can be separated from the fastener by shearing.
  • the tip may include a base shelf for impeding tool slippage when separating the tip.
  • the clamp may include one or more endcaps for capping the tube.
  • the power line coupler 2 is suitable for electrically coupling a pair of cables 4a, 4b together as shown in Figure 4 .
  • the coupler 2 includes a tubular protector 6 for receiving and protecting the cables 4 from damage by the base of clamp fasteners 10.
  • a tubular clamp 8 can be used to clamp the protector 6 and cables 4 together so that the cables 4 are coupled together and resist slipping from the protector 6.
  • the protector 6 is in the form of an inner tube in which the cables 4a, 4b can be inserted from opposite sides ( Fig. 4 ). To facilitate insertion of the cables 4, the protector 6 includes an inner lubricant in the form of grease. As can best be seen in Figure 2 , the protector 6 widens at both ends so as to be retained within the clamp 8.
  • the protector 6 is formed from deformable aluminum and becomes corrugated (or undulates) when clamped so as to further resist extraction from the clamp 8.
  • the clamp 8 includes an outer tube 12 in which the protector 6 is located.
  • the outer tube 12 includes threaded holes 14 in which respective fasteners 10 can be engaged.
  • the clamp 8 includes the fasteners which each take the form of a bolt.
  • the outer tube 12 is formed from comparatively durable aluminum and has chamfered or beveled inner edges 13 which engage with the widened ends of the protector 6.
  • the coupler 2 further includes a pin 16 extending through the protector 6 and clamp 8.
  • the pin 16 holds the protector 6 within the clamp 8 and further provides a stop against which the cables 4 can be positioned when fully inserted in the coupler 2.
  • the cables 4a, 4b are inserted within opposite ends of the protector 6.
  • the clamp 8 is clamped onto the protector 6 so that the protector 6 and cables 4a, 4b are clamped together. Elaborating further, the fasteners 10 are tightened which, in turn, deforms the protector 6. As previously explained, the protector 6 protects the strands of each cable 4 from damage during tightening of the fasteners 10.
  • the cables 4 can be firmly held within the protector 6, irrespective of their diameter.
  • Each of the aluminum protector 6, clamp 8 and fasteners 10 are electrically conductive so that the cables 4a, 4b are electrically coupled together.
  • the cables 4a, 4b are bare (i.e. not insulated). In one embodiment, insulation can instead be stripped from the ends of the cables 4a, 4b prior to coupling them together.
  • an overhead power line coupler 102 shown in Figures 5 to 7 for coupling a pair of cables 104a, 104b together.
  • the coupler 102 includes an inner protector 106 for receiving and protecting the cables 104.
  • the protector 106 includes a pair of protection members 107a, 107b, in the form of aluminum plates, between which the cables 104 can be received.
  • the coupler 102 further includes an outer clamp 108 for clamping the protector 106 and cables 104 together.
  • the protection members 107a, 107b are coated on their inwardly faces with a friction enhancing compound (e.g. carborundum) to impede extraction of the cables 104.
  • a friction enhancing compound e.g. carborundum
  • the friction enhancing compound reduces the clamping torque required to hold the cables 104.
  • the clamp 108 includes an outer tube 112 in which the protector 106 is located.
  • the clamp 108 further includes a plurality of inner protrusions 113 force-fitted by sliding into a slot in the bottom of the tube 112.
  • the protrusions 113 are formed from aluminum or brass, and located on a lower side of the coupler 102.
  • Fasteners 110 in the form of shear bolts are located on the upper side of the coupler 102. As can best be seen in Figure 8 , the protrusions 113 and fasteners 110 are alternatingly disposed so that, in use, the protector 106 and cables 104 are corrugated and resist extraction from the clamp 108.
  • each aluminum fastener 110 includes a head 150 from which a threaded shaft 152 extends.
  • the head 150 defines a recess 154 such that a hexagonal tip 156 of the head 150 can be separated from the fastener 110 by shearing with a spanner.
  • the tip 156 includes a base shelf 158 for impeding spanner (wrench, shifter or other tool) slippage to the hexagonal base 160 of the head 150 when separating the tip 156.
  • the spanner is used to preliminarily tighten each fastener 110 until each tip 156 separates so that the cables 104 are held under preliminary pressure in an undulating or corrugated manner. Thereafter, the spanner is used to further tighten each base 160 (and place the cables 104 under greater pressure) until each base 160 separates from its threaded shaft 152 so that no part of the fastener 110 remains protruding from the clamp 108.
  • This two-step tightening approach impedes excessive stresses on the cables 104.
  • the power line coupler further includes a plastic pin locator 16 extending through the center of the tube 112 and protector 106, and against which the cables 104 inserted from opposite sides of the coupler 102 can be located.
  • the locator 16 clips or snap-fits into the tube 112 and has a split tail with projections to impede removal.
  • the clamp 108 also includes a pair of plastic endcaps 180a, 180b for capping the tube 112.
  • Each cap 180 defines an internal rib or tongue for snap engaging within an endless outer groove defined in the tube 112.
  • an overhead power line coupler 202 shown in Figures 9 to 12 for coupling a pair of cables 104a, 104b together.
  • Like reference numerals refer to like features previously described.
  • the coupler 202 includes a clamp 204 including alternatingly disposed fasteners 110 that longitudinally alternate between left and right sides of the clamp 204.
  • the clamp 204 includes an outer tube 208 through which the threaded fasteners 110 pass.
  • An upper curved cable protector 205 is provided along the ceiling of the tube 208 for receiving and protecting the cables 104 from the fasteners 110.
  • the protector 205 includes a pair of protection members 206 in tube 208 in the form of aluminum plates, for receiving respective cables 104 on either side of the central cable stop pins 16.
  • Each extruded protection member 206 fits into the ceiling of the tube 208 with a dove-tail joint 210.
  • each extruded protection member 206 has a plurality of longitudinally extending cable engaging teeth 212.
  • the coupler 202 further includes a pair of curved floor plates 214 for receiving respective cables 104 on either side of the central cable stop pins 16.
  • Each floor plate 214 is fitted in position within a respective alcove defined in the internal floor of the tube 208.
  • Each floor plate 214 includes inwardly extending spaced apart transverse rib protrusions 216 which engage directly with the cable 104.
  • the fasteners 110 and protrusions 216 are alternately arranged along the top and bottom of the coupler 202 so that the fasteners 110 impact upon protection members 206 to push the cable 104 into space between adjacent protrusions 216. Furthermore, as can best be seen in Figures 11 and 12 , the fasteners 110 are alternately arranged from side to side along the coupler 202. In this manner, the tightened fasteners 110 clamp the upper deformed protector members 206 and cables 104 together so that the cables 104 become corrugated in two dimensions, when viewed from both above ( Fig. 11 ) and the side ( Fig. 12 ), which effectively impedes withdrawal of the cables 104 from the coupler 202.
  • the coupler 2 above included a single protector 6 and a single clamp 8.
  • the coupler may instead include a protector means including two or more protectors.
  • the coupler may instead include a clamp means including two or more clamps.
  • the dimensions of the protector 6 and clamp 8 can be varied to suit the dimensions of the cables 4. Furthermore, the number of fasteners 10 for the clamp 8 can be varied and increase with increasing cable diameter.

Landscapes

  • Suspension Of Electric Lines Or Cables (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (10)

  1. Stromleitungskupplung (202) zum Koppeln eines Paars von Kabeln (104) miteinander, wobei die Kupplung (202) umfasst:
    mindestens eine Schutzvorrichtung (205) zum Schützen der Kabel (104);
    einen Klemmanschluss (204) zum Zusammenklammern der Schutzvorrichtung (205) und der Kabel (104); und
    mehrere Vorsprünge (216), um welche herum die Kabel (104) gebogen werden können;
    mindestens einen Stift (16), der sich durch die Schutzvorrichtung (205) hindurch erstreckt und an dem die von entgegengesetzten Seiten der Kupplung (202) eingeführten Kabel (104) fixiert sein können;
    wobei die Klemmanschluss (204) ein Rohr (208) enthält,
    dadurch gekennzeichnet, dass:
    die Kupplung (202) ferner ein paar gekrümmte Bodenplatten (214) enthält, um jeweilige Kabel (104) an jeder Seite des Stiftes (16) aufzunehmen, wobei jede Bodenplatte (214) innerhalb einer jeweiligen Nische positionell eingepasst ist, die in einem inneren Boden des Rohrs (208) definiert ist, wobei jede Bodenplatte (214) die Vorsprünge (216) enthält, die sich nach innen erstreckende, voneinander beanstandete Querrippen-Vorsprünge (216) sind, die direkt mit dem Kabel (104) in Eingriff stehen.
  2. Stromleitungskupplung (202) nach Anspruch 1, wobei jede Schutzvorrichtung (205) ein Schutzelement (206) enthält, um ein Kabel (104) vor mindestens einem Befestigungselement (110) zu schützen.
  3. Stromleitungskupplung (202) nach Anspruch 2, wobei das Schutzelement (206) aus verformbarem Aluminium ausgebildet ist und/oder mit einem die Reibung vergrößernden Stoff beschichtet ist, um ein Herausziehen der Kabel (104) zu verhindern.
  4. Stromleitungskupplung (202) nach Anspruch 1, wobei sich die Vorsprünge (216) an einer Seite der Kupplung (202) befinden und die Stromleitungskupplung (202) ferner mehrere Befestigungselemente (110) enthält, die sich an der anderen Seite der Kupplung (202) befinden.
  5. Stromleitungskupplung (202) nach Anspruch 4, wobei die Befestigungselemente (110) bei Verwendung so konfiguriert sind, dass sie jedes Kabel (104) um die Vorsprünge (216) herumbiegen, damit es wellenförmig wird und einem Herausziehen aus dem Klemmanschluss (204) widersteht.
  6. Stromleitungskupplung (202) nach Anspruch 1, wobei der Klemmanschluss (204) abwechselnd angeordnete Befestigungselemente (110) enthält.
  7. Stromleitungskupplung (202) nach Anspruch 6, wobei die Befestigungselemente (110) abwechselnd an der gleichen Seite des Klemmanschlusses (204) angeordnet sind.
  8. Stromleitungskupplung (202) nach Anspruch 1, wobei der Klemmanschluss (204) Befestigungselemente (110) enthält, wobei jedes Befestigungselement (110) einen Kopf (150) enthält, von dem aus sich ein Gewindeschaft (152) erstreckt, wobei der Kopf (150) eine Ausnehmung (154) derart definiert, dass eine Spitze (156) des Kopfes (150) durch Abscheren von dem Befestigungselement (110) getrennt werden kann.
  9. Stromleitungskupplung (202) nach Anspruch 8, wobei die Spitze (156) eine Basisablage (158) enthält, um das Rutschen eines Werkzeugs zu verhindern, wenn die Spitze (156) abgetrennt wird.
  10. Stromleitungskupplung (202) nach Anspruch 1, wobei der Klemmanschluss (204) eine oder mehrere Endkappen (180) enthält, um das Rohr (208) abzudecken.
EP13167332.9A 2012-05-09 2013-05-10 Stromleitungskupplung Active EP2662932B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/467,154 US20120276789A1 (en) 2009-10-21 2012-05-09 Power line coupler
AU2013205481A AU2013205481B2 (en) 2009-10-21 2013-04-29 A Power Line Coupler

Publications (3)

Publication Number Publication Date
EP2662932A2 EP2662932A2 (de) 2013-11-13
EP2662932A3 EP2662932A3 (de) 2014-05-07
EP2662932B1 true EP2662932B1 (de) 2021-04-07

Family

ID=48431848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13167332.9A Active EP2662932B1 (de) 2012-05-09 2013-05-10 Stromleitungskupplung

Country Status (3)

Country Link
EP (1) EP2662932B1 (de)
AU (1) AU2013205481B2 (de)
ZA (1) ZA201303355B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3051606B1 (fr) * 2016-05-20 2018-06-29 Societe Industrielle De Construction D'appareils Et De Materiel Electriques Dispositif de connexion pour un troncon terminal de cable electrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079189A (en) * 1976-02-26 1978-03-14 Mac Products, Inc. High voltage cable splice
US4269465A (en) * 1979-12-26 1981-05-26 Amp Incorporated Splice connector for aluminum wire
GB9905505D0 (en) * 1999-03-11 1999-05-05 B & H Nottingham Ltd Improvements in electrical connectors
US7530840B2 (en) * 2005-02-10 2009-05-12 Zoll Medical Corporation Medical system including a cable retainer
US8202131B2 (en) * 2009-10-21 2012-06-19 Sicame Australia Pty Ltd Power line coupler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AU2013205481A1 (en) 2013-05-23
AU2013205481B2 (en) 2015-12-10
EP2662932A3 (de) 2014-05-07
ZA201303355B (en) 2014-01-29
EP2662932A2 (de) 2013-11-13

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