EP3836304A1 - Bipolarer anschluss - Google Patents

Bipolarer anschluss Download PDF

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Publication number
EP3836304A1
EP3836304A1 EP20179538.2A EP20179538A EP3836304A1 EP 3836304 A1 EP3836304 A1 EP 3836304A1 EP 20179538 A EP20179538 A EP 20179538A EP 3836304 A1 EP3836304 A1 EP 3836304A1
Authority
EP
European Patent Office
Prior art keywords
connector
cables
branch
cable
installation
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.)
Withdrawn
Application number
EP20179538.2A
Other languages
English (en)
French (fr)
Inventor
Amor Bouchiba
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3836304A1 publication Critical patent/EP3836304A1/de
Withdrawn legal-status Critical Current

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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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • 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
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/40—Pivotable clamping member
    • 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
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides 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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/031—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for multiphase cables, e.g. with contact members penetrating insulation of a plurality of conductors

Definitions

  • branching and branching connectors for electrical cable connections, but these connectors, whatever their types of conductor connection, simultaneous or independent, are all unipolar and only allow the contact of a single trunk cable with a single branch cable.
  • Branch connectors commonly referred to as separate branch connectors or independent clamping, allow mounting or dismounting of the branch cable without disconnecting the main cable.
  • the connector that is the subject of this patent is classified in the category of insulation piercing connectors, as it can serve as a stripping connector by adding a specific device.
  • the connector which is the subject of this invention is of the bipolar type and has the advantage of replacing two unipolar connectors.
  • the present invention relates generally to bipolar branching connectors specific to the establishment in two stages of connection to an electrical network.
  • the connector is connected to the two main cables, generally already in place, and in the second step, the connector is connected to the other two branch cables.
  • the main cables can be, depending on the case, a phase cable and a neutral cable or two phase cables.
  • the tightening torque is adapted to the thickness of the insulation of the cable on both the main side and the branch side, allowing a minimization of the contact resistance between the main and branch cables.
  • a bipolar connector finds its application in particular in the field of single-phase or three-phase connections of subscribers on the overhead networks of electric energy distributors.
  • the single-phase connection is made by a single connector and the three-phase connection is made by two connectors, instead of two or four single-pole connectors respectively.
  • the bipolar connector object of the invention, comprises, overall, a central body containing the electric current transfer blades, a jaw for tightening the two conductors of the network, and a jaw for tightening the two branched conductors.
  • the transfer blades are housed in said central body with a degree of freedom in translation. Thanks to this degree of freedom, a uniform pressure of the blade teeth is ensured on the network conductors and those of the connection when the two jaws are tightened, which makes it possible to obtain a low contact resistance.
  • single-pole connectors are a problem. They are often used on overhead electrical networks made up of twisted cables with 4 conductors and carried by pylons ten meters high. To assemble them, the operator has to climb the pylon and place the connectors on the cable with a spacing of 10 to 15 cm between connectors. Thus, a three-phase installation occupies a space of 50 to 70 cm along the cables. An operator perched vertically about ten meters at the top of a pylon will have great difficulty tightening a connector located 70 cm horizontally from his position. As a result, it happens that single-pole connectors are not tightened to their nominal torque, which causes poor electrical contact, resulting in heating by the Joule effect which can cause the connector and the cable to ignite.
  • the bipolar connector object of the invention, greatly alleviates this problem by reducing the space occupied by a connection.
  • the bipolar connector object of the invention, does not use grease to protect electrical contacts against the infiltration of water.
  • this device consists of a cap integral with the connector and not removable, thus preventing the measurement of the voltage on the tap-off directly on the connector.
  • this device is not integral with the connector and consists of a removable cap under tension.
  • the connector which is the subject of the invention falls into the latter category. It also offers easy measurement of the connection voltage because it is bipolar.
  • the connector object of this invention uses, as clamping means, a threaded rod overmolded in the central body, two nuts with a torque limiting device, two conical washers, a flat washer and a metal part for distributing clamping loads of specific shape. .
  • All connectors must accommodate a wide range of cross sections on both the main side and the branch side with a large section differential between the main cable and the corresponding branch cable. This problem is solved either by oversizing the plastic jaws or by inserting reinforcing metal parts.
  • the connector which is the subject of the invention uses the latter option.
  • the branch connector comprises, overall, in all of its embodiments, a body (1), made of insulating material, two jaws (2) and (3) , also of insulating material, and which, movably mounted on said body (1) under the control of clamping means, define with this body (1) two housings suitable for the installation of the assembly on two so-called main cables, which can be of different sections, and two other housings specific to the installation of the assembly on two so-called derivative cables of the same section ( figures 1, 2, 3,4 , 5 and 6 ).
  • Each main cable is placed in electrical contact at low resistance with one of the two branch cables thanks to metal parts comprising projecting parts (8) on the one hand, and to the clamping device, on the other hand ( figures 5 and 6 ).
  • Two rails ( figure 11 ) implanted on the body ensure the guiding in translation of the two jaws at the time of tightening.
  • the clamping means consists of a threaded rod (5) overmolded in the body (1) ( figure 6 ).
  • the body comprises two rows of five frustoconical housings which can receive metal parts (8) intended to ensure contact between the main and branch cables.
  • the frustoconical shape of the housing allows the metal parts to adjust to the cross section of the cables so as to minimize the contact resistance.
  • the sealing of these contact parts is ensured by four flexible material gaskets (9) and (10) shown in figures 6 , 15 and 16 .
  • Four housings are provided in the body (1) to receive these seals.
  • the sections of the main and branch cables that can be used are protruding on both sides of the body (1).
  • the same figure indicates the location of the housing on the body (1) of two caps (14) ensuring the insulation of the ends of the branched cables.
  • the two jaws (2) and (3) comprise a housing for guiding in translation a metallic reinforcing part (4) ( figure 14 ) sliding on each jaw.
  • the sliding is made possible thanks to a central oval housing on each jaw, crossed by the threaded rod (5), allowing the reinforcing piece (4) to slide transversely on each jaw when tightening and thus distribute the load, especially when the cables are of different sections. ( Figures 7 to 10 ).
  • the figure 14 represents this metallic reinforcement piece (4). Placed on the external face of each jaw, its function is to distribute the clamping load on the jaw and to maintain this clamping. Its base is rectangular and serves as a support for a washer (7) ( figures 6 and 14 ).
  • the figure 17 shows the metal contact piece (8) which is flat in shape with a trapezoidal part on the main side and rectangular on the derivative side. It has three teeth on each protruding part. These teeth are able to pierce the insulation of cables and establish a low resistance electrical connection between each main cable and the corresponding branch cable, and this for a wide range of cross-section both for the main cables and for the cables. derivatives.
  • the trapezoidal guide allows each contact piece to be positioned specifically and adapted to each form of cable, thus making it possible to obtain a low contact resistance and consequently a low heating of the connector. ( Figures 8 and 10 ).
  • the metal contact parts (8) are isolated by four seals (9) and (10) of specific shapes, as shown in the figures 6 and 15 and 16 .
  • the insulation of the ends of the branched cables is ensured by a cap (14) of flexible plastic material, of conical shape, covering various sections of the cables.
  • a shoulder is used to hold the cap with the body.
  • the clamping elements (5), (6), (7), and (13) are shown in the exploded view of Figure 6 . They consist respectively of a threaded rod (5), two nuts (6), two conical washers (7) and two flat washers (13).
  • the tightening is controlled by two torque limiters (11) and (12) calibrated on two specific thresholds on the main and derivative tightening sides.
  • torque limiters have a hexagonal section (11) for 13 wrenches ( figure 18 ).
  • the torque limiter is molded onto the tightening nut.
  • the torque limiter can be dismantled to allow its replacement in the event of disconnection-reconnection.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP20179538.2A 2019-12-12 2020-06-11 Bipolarer anschluss Withdrawn EP3836304A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TNP/2019/000329A TN2019000329A1 (fr) 2019-12-12 2019-12-12 Connecteur de dérivation bipolaire à serrage indépendant pour câbles électriques isolés aériens

Publications (1)

Publication Number Publication Date
EP3836304A1 true EP3836304A1 (de) 2021-06-16

Family

ID=71092441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20179538.2A Withdrawn EP3836304A1 (de) 2019-12-12 2020-06-11 Bipolarer anschluss

Country Status (2)

Country Link
EP (1) EP3836304A1 (de)
TN (1) TN2019000329A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4148911A1 (de) * 2021-09-08 2023-03-15 Tyco Electronics-Simel Isolierungsdurchdringender verbinder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139496A2 (de) * 2000-03-31 2001-10-04 Ensto Sekko Oy Verbinder für ein Freileitungskabel
EP1513226A1 (de) * 2003-09-03 2005-03-09 Pfisterer Kontaktsysteme GmbH & Co. KG Vorrichtung zum elektrischen Verbinden von mindestens zwei isolierten Hauptleitern eines Energieversorgungskabels, insbesondere Kabelabzweigklemme

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139496A2 (de) * 2000-03-31 2001-10-04 Ensto Sekko Oy Verbinder für ein Freileitungskabel
EP1513226A1 (de) * 2003-09-03 2005-03-09 Pfisterer Kontaktsysteme GmbH & Co. KG Vorrichtung zum elektrischen Verbinden von mindestens zwei isolierten Hauptleitern eines Energieversorgungskabels, insbesondere Kabelabzweigklemme

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4148911A1 (de) * 2021-09-08 2023-03-15 Tyco Electronics-Simel Isolierungsdurchdringender verbinder

Also Published As

Publication number Publication date
TN2019000329A1 (fr) 2021-10-04

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