NO343038B1 - Power wiring harness - Google Patents
Power wiring harness Download PDFInfo
- Publication number
- NO343038B1 NO343038B1 NO20162065A NO20162065A NO343038B1 NO 343038 B1 NO343038 B1 NO 343038B1 NO 20162065 A NO20162065 A NO 20162065A NO 20162065 A NO20162065 A NO 20162065A NO 343038 B1 NO343038 B1 NO 343038B1
- Authority
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- Norway
- Prior art keywords
- sleeve
- electrically conductive
- conductors
- elongated
- axially displaceable
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- H02G15/02—Cable terminations
- H02G15/06—Cable terminating boxes, frames or other structures
-
- 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
-
- 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
- H01R4/58—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 characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- 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
- H01R4/58—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 characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
- H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
-
- 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
- H01R4/2406—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation having needles or pins
-
- 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
- H01R4/70—Insulation of connections
- H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
-
- 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
Landscapes
- Installation Of Indoor Wiring (AREA)
- Installation Of Bus-Bars (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Cable Accessories (AREA)
Abstract
Det beskrives en framgangsmåte ved sikring av en samling potensielt elektrisk ledende ledere (21 a, 21 b, 21 c, 21 d) med ulik polaritet eller fase anordnet i en eller flere elektriske kabler (2; 2a, 2b, 2c). Det beskrives også en sikringsanordning (1) for anvendelse ved utøvelse av framgangsmåten.A procedure is described for securing a collection of potentially electrically conductive conductors (21 a, 21 b, 21 c, 21 d) with different polarity or phase arranged in one or more electrical cables (2; 2a, 2b, 2c). A safety device (1) is also described for use when carrying out the method.
Description
SIKRINGSANORDNING FOR STRØMKABELENDE FUSE DEVICE FOR POWER CABLE END
Det beskrives en sikringsanordning innrettet til kortslutning av potensielt elektriske ledende ledere med ulik polaritet eller fase anordnet i én eller flere elektriske kabler. Det beskrives også en framgangsmåte ved sikring av en samling potensielt elektrisk ledende ledere med ulik polaritet eller fase anordnet i én eller flere elektriske kabler. A safety device designed to short-circuit potentially electrically conducting conductors with different polarity or phase arranged in one or more electrical cables is described. It also describes a procedure for securing a collection of potentially electrically conductive conductors with different polarity or phase arranged in one or more electrical cables.
På anlegg for distribusjon av elektrisk energi vil det foreligge en risiko for at kabler utilsiktet kan være spenningsførende uten at dette er indikert på en fri kabelende. Dette kan ha fatale konsekvenser, og det brukes mye ressurser for å forhindre at slike tilstander oppstår. I andre situasjoner, særlig på høyspenningsanlegg hvor det blir ført en høyspenningskabel inn i et koplingsanlegg, en transformatorstasjon eller lignende, uten at høyspenningskabelen blir terminert umiddelbart, er det behov for å markere at kabelen er spenningsløs ved at det koples en såkalt markeringsjording til kabelen. On installations for the distribution of electrical energy, there will be a risk that cables may be inadvertently live without this being indicated on a free cable end. This can have fatal consequences, and a lot of resources are used to prevent such conditions from occurring. In other situations, particularly on high-voltage installations where a high-voltage cable is fed into a switching facility, a transformer station or the like, without the high-voltage cable being terminated immediately, there is a need to mark that the cable is de-energized by connecting a so-called marking ground to the cable.
Et kjent virkemiddel for å hindre at en kabel, for eksempel en jordkabel som skal føre strøm til et veglysanlegg som er under oppføring, kan påføres elektrisk spenning, er å kortslutte faselederne, slik at den respektive kursens sikring i forsyningsanlegget kopler ut dersom det blir gjort forsøk på å sette strøm på den ikke komplett oppkoplede kursen. Det er kjent å kortslutte faseledere i en flerlederkabel ved hjelp av en såkalt kabelkortslutter som er tildannet av ei sirkulær metallplate med flere metallstifter som er festet perpendikulært på plata ved sveising, og hvor stiftene slås inn i endeflaten på kabelen. Det har vist seg særlig vanskelig å kortslutte tynne kabler på denne måten pga. kabelens manglende stivhet. A known means of preventing electrical voltage from being applied to a cable, for example an earth cable which is to carry power to a road lighting system that is under construction, is to short-circuit the phase conductors, so that the fuse of the respective course in the supply system disconnects if this is done attempt to power up the not fully connected course. It is known to short-circuit phase conductors in a multi-conductor cable using a so-called cable short-circuit breaker which is made of a circular metal plate with several metal pins which are fixed perpendicular to the plate by welding, and where the pins are driven into the end face of the cable. It has proven particularly difficult to short-circuit thin cables in this way due to the lack of rigidity of the cable.
Fra EP1105897 A1 er det kjent en innretning for kortslutning av to elektriske ledere ved hjelp av en mekanisk bryteranordning, hvor det parallelt med bryteranordningen er anordnet i det minste en elektronisk bryteranordning som reagerer på spenningsforskjellen mellom de to lederne. From EP1105897 A1, a device for short-circuiting two electrical conductors using a mechanical switch device is known, where at least one electronic switch device is arranged parallel to the switch device which reacts to the voltage difference between the two conductors.
Fra NO334165B1, US2013133943A1 og GB1344481A er det kjent anordninger for jording av elektriske komponenter. From NO334165B1, US2013133943A1 and GB1344481A devices for grounding electrical components are known.
GB1189369 beskriver ei isolerende koplingshylse for elektriske ledninger, idet hylsa er lukket i en ende og rommer ei spiralformet fjør. Koplingshylsa anvendes til sammenkopling av avisolerte en der av elektriske ledere. Fjøra ligger an mot en endevegg av hylsa og mot en innvendig avsats i et midtparti av hylsa. GB1189369 describes an insulating connector sleeve for electrical cables, the sleeve being closed at one end and containing a spiral spring. The coupling sleeve is used for connecting stripped electrical conductors. The spring rests against an end wall of the sleeve and against an internal ledge in a central part of the sleeve.
Det er dessuten viktig å hindre at fuktighet trenger inn i elektriske kabler gjennom åpne ender som er eksponert for vær og vind. Til det anvendes det som regel kald- eller varmkrympehetter, for eksempel 3M® Cold Schrink EC kaldkrympehetter. It is also important to prevent moisture from entering electrical cables through open ends that are exposed to the elements. Cold or heat shrink caps are usually used for this, for example 3M® Cold Shrink EC cold shrink caps.
Oppfinnelsen har til formål å avhjelpe eller å redusere i det minste én av ulempene ved kjent teknikk, eller i det minste å skaffe til veie et nyttig alternativ til kjent teknikk. The purpose of the invention is to remedy or to reduce at least one of the disadvantages of known technology, or at least to provide a useful alternative to known technology.
Formålet oppnås ved trekkene som er angitt i nedenstående beskrivelse og i de etterfølgende patentkravene. The purpose is achieved by the features indicated in the description below and in the subsequent patent claims.
Oppfinnelsen tilveiebringer en sikringsanordning for en flerlederkabels ende eller en bunt av flere enlederkabler, hvor ei hylse som er tildannet av et elektrisk ledende materiale, er forsynt med flere i det vesentlige radielt anordnede boringer, i det minste én boring for hver leder. Boringene er innrettet til mottak av langstrakte, aksielt forskyvbare og elektrisk ledende elementer, typisk skruer, som kan presses gjennom kabelens isolerende kappe og inn i den nærliggende lederen. Hylseveggens radialtverrsnitt i et aksialplan samt nevnte elementers radialtverrsnitt må være stort nok til å kunne tåle den aktuelle strømstyrken som kursen, og dermed den respektive sikringen, er dimensjonert for. The invention provides a securing device for the end of a multi-conductor cable or a bundle of several single-conductor cables, where a sleeve made of an electrically conductive material is provided with several essentially radially arranged bores, at least one bore for each conductor. The bores are designed to receive elongated, axially displaceable and electrically conductive elements, typically screws, which can be pressed through the cable's insulating sheath and into the nearby conductor. The sleeve wall's radial cross-section in an axial plane as well as the radial cross-section of the aforementioned elements must be large enough to be able to withstand the relevant amperage for which the course, and thus the respective fuse, is dimensioned.
Hylsa og de langstrakte, aksielt forskyvbare og elektrisk ledende elementene tildannes fortrinnsvis i materialer som gir liten galvanisk spenning for å hindre at korrosjon ødelegger sikringsanordningen ved lang tids bruk. The sleeve and the elongated, axially displaceable and electrically conductive elements are preferably formed in materials that provide little galvanic voltage to prevent corrosion from destroying the safety device during long-term use.
Når en flerlederkabel er kortsluttet med sikringsanordningen ifølge oppfinnelsen, vil en fluidtettende krympehette kunne føye seg etter sikringsanordningens periferi og strekke seg forbi sikringsanordningen og inn på kabelens mantelflate. Dermed vil det være umulig å trekke krympehetta av kabelenden. When a multi-conductor cable is short-circuited with the fuse device according to the invention, a fluid-tight shrink cap will be able to follow the periphery of the fuse device and extend past the fuse device and onto the cable's jacket surface. This will make it impossible to pull the shrink cap off the cable end.
Når sikringsanordningen anvendes på høyspentkabler, enten en samling av flere enledere eller en enkelt enleder, vil en montert sikringsanordning først og fremst være en markering av at høyspentkabelen er spenningsløs. Til dette formålet er det hensiktsmessig å forsyne sikringsanordningen med en jordingsforbindelse, dvs. en leder som kan forbinde hylsa med jord. When the safety device is used on high-voltage cables, either a collection of several single conductors or a single single conductor, a mounted safety device will primarily be a marking that the high-voltage cable is de-energized. For this purpose, it is appropriate to provide the safety device with an earthing connection, i.e. a conductor that can connect the sleeve to earth.
Oppfinnelsen er definert av de selvstendige patentkravene. De uselvstendige kravene definerer fordelaktige utførelser av oppfinnelsen. The invention is defined by the independent patent claims. The independent claims define advantageous embodiments of the invention.
I et første aspekt vedrører oppfinnelsen mer spesifikt en sikringsanordning innrettet til kortslutning av elektriske ledere med ulik polaritet eller fase anordnet i én eller flere potensielt elektrisk ledende kabler, hvor sikringsanordningen omfatter ei elektrisk ledende hylse med et innvendig tverrsnitt stort nok til å omslutte en flerlederkabel eller en samling av én eller flere enlederkabler, kjennetegnet ved at den elektrisk ledende hylsa er forsynt med flere langstrakte, aksielt forskyvbare og elektrisk ledende elementer som er anordnet i boringer som strekker seg gjennom en hylsevegg, og de langstrakte, aksielt forskyvbare og elektrisk ledende elementene er forsynt med et endeparti som er innrettet til å kunne trenge gjennom et isolasjonslag som omslutter den respektive, nærliggende elektriske lederen, og inn i nevnte leder. In a first aspect, the invention relates more specifically to a fuse device designed to short-circuit electrical conductors of different polarity or phase arranged in one or more potentially electrically conductive cables, where the fuse device comprises an electrically conductive sleeve with an internal cross-section large enough to enclose a multi-conductor cable or a collection of one or more single-conductor cables, characterized in that the electrically conductive sleeve is provided with several elongated, axially displaceable and electrically conductive elements which are arranged in bores that extend through a sleeve wall, and the elongated, axially displaceable and electrically conductive elements are provided with an end portion which is adapted to be able to penetrate through an insulation layer surrounding the respective nearby electrical conductor and into said conductor.
Hylsa kan være rørformet med sirkulært eller mangekantet tverrsnitt. The sleeve can be tubular with a circular or polygonal cross-section.
Boringenes avstand på hylsas periferi korresponderer fortrinnsvis i det vesentlige med den innbyrdes plasseringen av de elektriske lederne. The distance of the bores on the sleeve's periphery preferably corresponds essentially to the relative position of the electrical conductors.
De langstrakte, aksielt forskyvbare og elektrisk ledende elementene kan være jevnt fordelt på ei rekke omkring hylsas periferi. The elongated, axially displaceable and electrically conductive elements can be evenly distributed in a row around the sleeve's periphery.
De langstrakte, aksielt forskyvbare og elektrisk ledende elementene kan være jevnt fordelt på minst to rekker omkring hylsas periferi, idet et langstrakt, aksielt forskyvbart og elektrisk ledende element i hver rekke er anordnet i et felles plan som strekker seg i hylsas senterakseretning. The elongated, axially displaceable and electrically conductive elements can be evenly distributed in at least two rows around the sleeve's periphery, an elongated, axially displaceable and electrically conductive element in each row being arranged in a common plane that extends in the direction of the sleeve's central axis.
En hylsevegg og det eller de de langstrakte, aksielt forskyvbare og elektrisk ledende elementene som er i kontakt med en leder, har fortrinnsvis et radielt tverrsnitt som gir tilstrekkelig stor strømføringsevne til å tåle den aktuelle strømstyrken som kan oppstå ved kortslutning etter påføring av spenning på én eller flere av lederne. A sleeve wall and the elongated, axially displaceable and electrically conductive element(s) which are in contact with a conductor preferably have a radial cross-section which provides a sufficiently large current-carrying capacity to withstand the relevant current strength which may occur in the event of a short-circuit after applying voltage to one or several of the managers.
Hylsa kan være forsynt med en jordingsledning. The sleeve can be fitted with an earthing wire.
Hylsa, de langstrakte, aksielt forskyvbare og elektrisk ledende elementene og lederne er fortrinnsvis tildannet av materialer med liten galvanisk spenningsforskjell. The sleeve, the elongated, axially displaceable and electrically conductive elements and the conductors are preferably made of materials with a small galvanic voltage difference.
De langstrakte, aksielt forskyvbare og elektrisk ledende elementene kan være skruer, og boringene kan være gjengede. The elongate, axially displaceable and electrically conductive elements may be screws, and the bores may be threaded.
I et andre aspekt vedrører oppfinnelsen mer spesifikt en framgangsmåte ved sikring av en samling potensielt elektrisk ledende ledere med ulik polaritet eller fase anordnet i én eller flere elektriske kabler, hvor framgangsmåten omfatter trinnet: In a second aspect, the invention relates more specifically to a method for securing a collection of potentially electrically conductive conductors with different polarity or phase arranged in one or more electrical cables, where the method includes the step:
- å anordne ei elektrisk ledende hylse omkring et endeparti av samlingen av ledere, kjennetegnet ved at framgangsmåten omfatter det ytterligere trinnet: - arranging an electrically conductive sleeve around an end part of the collection of conductors, characterized in that the method includes the further step:
- å kortslutte lederne ved å forbinde hver av lederne med hylsa ved hjelp av ett eller flere langstrakte, aksielt forskyvbar og elektrisk ledende elementer. - to short-circuit the conductors by connecting each of the conductors to the sleeve by means of one or more elongated, axially displaceable and electrically conductive elements.
Framgangsmåten kan omfatte det ytterligere trinnet: The method may comprise the further step of:
- å kortslutte lederne ved å skru minst én skrue gjennom en hylsevegg og inn i hver leder. - to short-circuit the conductors by screwing at least one screw through a sleeve wall and into each conductor.
Framgangsmåten kan omfatte det ytterligere trinnet: The method may comprise the further step of:
- å jorde hylsa ved hjelp av en jordingsledning. - to ground the sleeve using a grounding wire.
Framgangsmåten kan omfatte det ytterligere trinnet: The method may comprise the further step of:
- å skjerme en kabel som omfatter de kortsluttede lederne, mot inntrengning av fuktighet i lederne ved - to shield a cable that includes the short-circuited conductors against the penetration of moisture into the conductors by
- å anordne ei krympehette utenpå hylsa og et aksielt nærliggende parti av en kappe som omslutter samlingen av ledere, og - arranging a shrink cap on the outside of the sleeve and an axially adjacent part of a jacket that encloses the assembly of conductors, and
- å bringe krympehetta til tettende anlegg mot kappen ved krymping. - to bring the shrink cap into a tight fit against the jacket during shrinking.
I det etterfølgende beskrives eksempler på foretrukne utførelsesformer som er anskueliggjort på medfølgende tegninger, hvor: In the following, examples of preferred embodiments are described which are illustrated in the accompanying drawings, where:
Fig.1 viser i perspektiv en sikringsanordning ifølge oppfinnelsen; Fig.1 shows in perspective a safety device according to the invention;
Fig.2 viser et enderiss av sammenstillingen av sikringsanordningen og en kabelende; Fig.2 shows an end view of the assembly of the securing device and a cable end;
Fig.3 viser i perspektiv en kabelende forsynt med en sikringsanordning med to rekker av skruer, hvorav noen skruer er skrudd inn i kabelen; Fig.3 shows in perspective a cable end provided with a securing device with two rows of screws, some of which screws are screwed into the cable;
Fig.4 viser et enderiss av en variant av sikringsanordningen som sammenholder og kortslutter en samling av enlederkabler og er forsynt med en separat jordingsledning; Fig.4 shows an end view of a variant of the fuse device which connects and short-circuits a collection of single-conductor cables and is provided with a separate grounding wire;
Fig.5 viser et enderiss av en variant av en mangekantet sikringsanordning som sammenholder og kortslutter en samling av enlederkabler tilsvarende det som er vist på figur 4; og Fig.5 shows an end view of a variant of a polygonal safety device which connects and short-circuits a collection of single-conductor cables corresponding to what is shown in figure 4; and
Fig.6 viser i perspektiv et endeparti av en flerlederkabel sikret med sikringsanordningen ifølge oppfinnelsen og beskyttet med ei tettende krympehette. Fig.6 shows in perspective an end part of a multi-conductor cable secured with the securing device according to the invention and protected with a sealing shrink cap.
Det henvises først til figur 1, hvor henvisningstallet 1 angir en sikringsanordning tildannet av ei elektriske ledende hylse 11 hvor det fra en mantelflate 111 strekker seg flere boringer 113 gjennom en hylsevegg 112. I hver boring 113 er det anordnet et langstrakt, elektrisk ledende element 121, fortrinnsvis i form av en skrue som er i inngrep med gjenger i boringen 113. Hylsa 11 er her vist sylindrisk, men også andre rørformer kan anvendes, se for eksempel figur 5. Boringene er jevnt fordelt på hylsas 11 periferi med en deling tilsvarende det antall ledere som skal kortsluttes. Boringene 113 er her anordnet på ei rekke 12a. Hylsa 11 har et radielt veggtverrsnitt 112a. Reference is first made to figure 1, where the reference number 1 indicates a safety device formed by an electrically conductive sleeve 11 where several bores 113 extend from a mantle surface 111 through a sleeve wall 112. In each bore 113 an elongated, electrically conductive element 121 is arranged , preferably in the form of a screw which engages with threads in the bore 113. The sleeve 11 is shown here as cylindrical, but other pipe shapes can also be used, see for example figure 5. The bores are evenly distributed on the periphery of the sleeve 11 with a division corresponding to number of conductors to be short-circuited. The bores 113 are here arranged in a row 12a. Sleeve 11 has a radial wall cross-section 112a.
Figur 2 viser en sikringsanordning 1 som kortslutter en firlederkabel 2 ved at skruene 121 er i elektrisk ledende kontakt med hver av firlederkabelens 2 ledere 21a, 21b, 21c, 21d. Boringene 113 er her anordnet radielt med 90 graders vinkelavstand. Figure 2 shows a safety device 1 which short-circuits a four-conductor cable 2 in that the screws 121 are in electrically conductive contact with each of the four-conductor cable's 2 conductors 21a, 21b, 21c, 21d. The bores 113 are here arranged radially with 90 degree angular spacing.
På figur 3 er sikringsanordningen 1 forsynt med skruer 121 anordnet i to skruerekker 12a, 12b. In Figure 3, the securing device 1 is provided with screws 121 arranged in two rows of screws 12a, 12b.
Dette kan være nyttig for å oppnå tilstrekkelig tverrsnittsareal i den elektrisk ledende forbindelsen mellom en leder 21a, 21b, 21c, 21d og hylsa 11. This can be useful for achieving sufficient cross-sectional area in the electrically conductive connection between a conductor 21a, 21b, 21c, 21d and the sleeve 11.
På figur 3 er det også vist flere ledige boringer 113 som er innrettet til mottak av de langstrakte, elektrisk ledende elementene 121. Ved å plassere et stort antall boringer 113 ut over på hylsas 11 periferi, vil en alltid kunne finne boringer 113 som ligger rett overfor en leder uavhengig av om lederne er regelmessig eller uregelmessig fordelt over hylsas 11 tverrsnitt Figure 3 also shows several free bores 113 which are designed to receive the elongated, electrically conductive elements 121. By placing a large number of bores 113 on the periphery of the sleeve 11, one will always be able to find bores 113 that lie straight towards a conductor regardless of whether the conductors are regularly or irregularly distributed over the sleeve's 11 cross-section
Det henvises så til figur 4, hvor en alternativ utførelse av sikringsanordningen 1 omfatter ei hylse 11 med sirkulært tverrsnitt som omslutter et parti av en samling av tre enlederkabler 2a, 2b, 2c. Tre korresponderende skruer 121 er anordnet med 120 graders vinkelavstand omkring hylsa 11 og forbinder de respektive enlederkablenes 2a, 2b, 2c ledere 22 med hylsa 11. En jordingsledning 13 er festet på hylsas 11 mantelflate 111 og er innrettet til å kunne forbindes med jord 14. Enlederkablene 2a, 2b, 2c er typisk høyspentkabler, og sikringsanordningen 1 anvendes i slike situasjoner først og fremst som en markering av at det er utført nødvendig kontroll med at kablene er gjort spenningsløse og sikret i tilførselsenden i forkant av arbeidet som utføres for å avdekke ledere 21a, 21b, 21c i enden av kablene 2a, 2b, 2c. Reference is then made to figure 4, where an alternative embodiment of the safety device 1 comprises a sleeve 11 with a circular cross-section which encloses a part of a collection of three single-conductor cables 2a, 2b, 2c. Three corresponding screws 121 are arranged at an angular distance of 120 degrees around the sleeve 11 and connect the conductors 22 of the respective single-conductor cables 2a, 2b, 2c with the sleeve 11. An earthing wire 13 is attached to the outer surface 111 of the sleeve 11 and is designed to be able to be connected to earth 14. The single-conductor cables 2a, 2b, 2c are typically high-voltage cables, and the safety device 1 is used in such situations primarily as a mark that the necessary control has been carried out, that the cables have been de-energized and secured at the supply end in advance of the work that is carried out to uncover conductors 21a, 21b, 21c at the end of the cables 2a, 2b, 2c.
Figur 5 viser en ytterligere utførelse av sikringsanordning 1 som omfatter ei mangekantet hylse 11 som her omslutter et parti av en samling av tre enlederkabler 2a, 2b, 2c tilsvarende det som er vist på figur 4. Figure 5 shows a further embodiment of security device 1 which comprises a polygonal sleeve 11 which here encloses a part of a collection of three single-conductor cables 2a, 2b, 2c corresponding to what is shown in Figure 4.
Figur 6 viser en ende av en kabel 2 sikret med en sikringsanordning 1 ifølge figur 1 og beskyttet av ei krympehette 3 som strekker seg forbi sikringsanordningen 1 og inn på kabelens 2 isolerende kappe 22, hvor den slutter tett og hindre inntrengning av fuktighet til kabelens 2 leder(e) (ikke vist på figur 6). I tillegg til å kortslutte lederne, hindrer sikringsanordningen 1 krympehetta 3 i å kunne trekkes av kabelen 2. Figure 6 shows an end of a cable 2 secured with a securing device 1 according to Figure 1 and protected by a shrink cap 3 which extends past the securing device 1 and onto the insulating jacket 22 of the cable 2, where it closes tightly and prevents the penetration of moisture into the cable 2 leader(s) (not shown in figure 6). In addition to short-circuiting the conductors, the safety device 1 prevents the shrink cap 3 from being pulled off the cable 2.
For å unngå galvanisk korrosjon, er det fordelaktig om de elektrisk ledende materialene i sikringsanordningen 1 velges fra ei gruppe metaller med liten galvanisk spenningsforskjell samtidig som både skruer 121 og hylse 11 har god ledningsevne og tilstrekkelig stort ledningstverrsnitt til å tåle den aktuelle strømstyrken som kan oppstå ved kortslutning etter feilaktig påføring av spenning på én eller flere av lederne 21a, 21b, 21c, 21d. In order to avoid galvanic corrosion, it is advantageous if the electrically conductive materials in the fuse device 1 are selected from a group of metals with a small galvanic voltage difference at the same time that both screws 121 and sleeve 11 have good conductivity and a sufficiently large wire cross-section to withstand the current strength that may occur in the event of a short circuit after incorrect application of voltage to one or more of the conductors 21a, 21b, 21c, 21d.
Sikringsanordningen 1 kan tildanne en bæreflate for et system for merking av kabelenden, for eksempel med informasjon om at kabelen er sikret samt informasjon om hvilket koplingspunkt kabelen er tilsluttet. The securing device 1 can form a support surface for a system for marking the cable end, for example with information that the cable is secured as well as information about which connection point the cable is connected to.
En fordel med sikringsanordningen 1 ifølge oppfinnelsen er at det er enkelt å måle om kortslutningen en gjennomført, i og med at den aktuelle lederens 21a, 21b, 21c, 21d endeparti er lett tilgjengelig i hylsas 11 ende for tilkopling av måleutstyr, og måling skjer ved å kontrollere om det er elektrisk ledende forbindelse mellom lederen 21a, 21b, 21c, 21d og hylsa 11 med f.eks. et såkalt multimeter. An advantage of the fuse device 1 according to the invention is that it is easy to measure whether the short circuit has been completed, in that the end part of the relevant conductor 21a, 21b, 21c, 21d is easily accessible at the end of the sleeve 11 for connecting measuring equipment, and measurement takes place by to check whether there is an electrically conductive connection between the conductor 21a, 21b, 21c, 21d and the sleeve 11 with e.g. a so-called multimeter.
Det bør bemerkes at alle de ovennevnte utførelsesformer illustrerer oppfinnelsen, men begrenser den ikke, og fagpersoner på området vil kunne utforme mange alternative utførelsesformer uten å avvike fra omfanget av de vedlagte kravene. I kravene skal referansenumre i parentes ikke sees som begrensende. It should be noted that all of the above embodiments illustrate the invention, but do not limit it, and those skilled in the art will be able to devise many alternative embodiments without departing from the scope of the appended claims. In the requirements, reference numbers in parentheses should not be seen as limiting.
Bruken av verbet "å omfatte" og dets ulike former ekskluderer ikke tilstedeværelsen av elementer eller trinn som ikke er nevnt i kravene. De ubestemte artiklene "en", "ei" eller "et" foran et element ekskluderer ikke tilstedeværelsen av flere slike elementer. The use of the verb "to comprise" and its various forms does not exclude the presence of elements or steps not mentioned in the claims. The indefinite articles "an", "ei" or "et" before an element do not exclude the presence of several such elements.
Det faktum at enkelte trekk er anført i innbyrdes forskjellige avhengige krav, indikerer ikke at en kombinasjon av disse trekk ikke med fordel kan brukes. The fact that certain features are listed in mutually different dependent claims does not indicate that a combination of these features cannot be advantageously used.
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20162065A NO343038B1 (en) | 2016-12-27 | 2016-12-27 | Power wiring harness |
PCT/NO2017/050327 WO2018124883A1 (en) | 2016-12-27 | 2017-12-14 | Safety device for electric power cable end |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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NO20162065A NO343038B1 (en) | 2016-12-27 | 2016-12-27 | Power wiring harness |
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NO20162065A1 NO20162065A1 (en) | 2018-06-28 |
NO343038B1 true NO343038B1 (en) | 2018-10-08 |
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NO20162065A NO343038B1 (en) | 2016-12-27 | 2016-12-27 | Power wiring harness |
Country Status (2)
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NO (1) | NO343038B1 (en) |
WO (1) | WO2018124883A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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NL2022791B1 (en) * | 2019-03-22 | 2020-10-02 | Batenburg Energietechniek B V | Short-circuiting device |
FR3127853B1 (en) * | 2021-10-05 | 2024-04-26 | Upeca | System and method for short-circuiting a cable |
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GB1189369A (en) * | 1967-12-22 | 1970-04-22 | Oswald Willy Thorsman | Improvements relating to Connectors for Electric Wires |
GB1344481A (en) * | 1970-03-24 | 1974-01-23 | Kafak Ab | Apparatus for grounding current bars in electrical switchgear |
EP0017048A1 (en) * | 1979-04-09 | 1980-10-15 | Karl Pfisterer Elektrotechnische Spezialartikel GmbH & Co. KG | Fully insulated clamp for insulated conductors |
EP1105897A1 (en) * | 1998-08-19 | 2001-06-13 | Siemens Aktiengesellschaft | Short-circuiting device |
US20120028493A1 (en) * | 2008-10-17 | 2012-02-02 | Richard Temblador | Piercing Connector for Continuous Flexible Bus |
US20130133943A1 (en) * | 2011-10-06 | 2013-05-30 | Bridgeport Fittings, Inc. | Split electrical grounding bushing with securely attached sections forming continuous insulation |
NO334165B1 (en) * | 2004-08-19 | 2013-12-23 | Cable Terminology Ltd | Electric earthing nut |
US20140000110A1 (en) * | 2012-07-02 | 2014-01-02 | Nexans | Method for electrically conductively connecting the electrical conductors of two high voltage cables |
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DD247777A1 (en) * | 1986-03-26 | 1987-07-15 | Leuna Werke Veb | EARTH AND SHORT CLOCK DEVICE |
DE4428181C1 (en) * | 1994-08-09 | 1996-03-07 | Langmatz Lic Gmbh | Securing device for free-end of electric earth cable for new buildings |
CN101325318B (en) * | 2008-07-10 | 2010-11-03 | 桐乡市供电局 | Ground wire apparatus for cable end part |
CN103427265B (en) * | 2013-08-01 | 2015-09-02 | 四川华丰企业集团有限公司 | Short-circuit structure between multichannel high voltage cable |
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2016
- 2016-12-27 NO NO20162065A patent/NO343038B1/en unknown
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2017
- 2017-12-14 WO PCT/NO2017/050327 patent/WO2018124883A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1189369A (en) * | 1967-12-22 | 1970-04-22 | Oswald Willy Thorsman | Improvements relating to Connectors for Electric Wires |
GB1344481A (en) * | 1970-03-24 | 1974-01-23 | Kafak Ab | Apparatus for grounding current bars in electrical switchgear |
EP0017048A1 (en) * | 1979-04-09 | 1980-10-15 | Karl Pfisterer Elektrotechnische Spezialartikel GmbH & Co. KG | Fully insulated clamp for insulated conductors |
EP1105897A1 (en) * | 1998-08-19 | 2001-06-13 | Siemens Aktiengesellschaft | Short-circuiting device |
NO334165B1 (en) * | 2004-08-19 | 2013-12-23 | Cable Terminology Ltd | Electric earthing nut |
US20120028493A1 (en) * | 2008-10-17 | 2012-02-02 | Richard Temblador | Piercing Connector for Continuous Flexible Bus |
US20130133943A1 (en) * | 2011-10-06 | 2013-05-30 | Bridgeport Fittings, Inc. | Split electrical grounding bushing with securely attached sections forming continuous insulation |
US20140000110A1 (en) * | 2012-07-02 | 2014-01-02 | Nexans | Method for electrically conductively connecting the electrical conductors of two high voltage cables |
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WO2018124883A1 (en) | 2018-07-05 |
NO20162065A1 (en) | 2018-06-28 |
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