WO2001023691A1 - Bras transversal constitue d'isolateur - Google Patents

Bras transversal constitue d'isolateur Download PDF

Info

Publication number
WO2001023691A1
WO2001023691A1 PCT/AU2000/001176 AU0001176W WO0123691A1 WO 2001023691 A1 WO2001023691 A1 WO 2001023691A1 AU 0001176 W AU0001176 W AU 0001176W WO 0123691 A1 WO0123691 A1 WO 0123691A1
Authority
WO
WIPO (PCT)
Prior art keywords
reticulation
mounting
arm
ofthe
pole
Prior art date
Application number
PCT/AU2000/001176
Other languages
English (en)
Inventor
Alfred George Baker
Kenneth Brett Boag
Original Assignee
Electrical Moulded Components Pacific 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
Application filed by Electrical Moulded Components Pacific Pty. Ltd. filed Critical Electrical Moulded Components Pacific Pty. Ltd.
Priority to AU77634/00A priority Critical patent/AU771648B2/en
Priority to CA002385741A priority patent/CA2385741C/fr
Publication of WO2001023691A1 publication Critical patent/WO2001023691A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/14—Supporting insulators
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/24—Cross arms

Definitions

  • TITLE CROSS ARM FORMED OF INSULATOR
  • the present invention relates to the reticulation of electrical power.
  • Above ground power distribution with voltages ranging from 1 lkV to 72kV, involve multiple conductors attached to support structures at intervals up to 500 metres (but often much more frequently to suit delivery of power to consumers).
  • Each support structure is generally made from timber, steel or concrete. These support structures must be high enough to clear normal traffic and vegetation.
  • Each support structure is fitted with at least one cross member, commonly referred to as a 'cross-arm'.
  • the cross-arms in turn support insulators at specified spacings. Conductors are then attached to the insulators.
  • Power is normally distributed in a three-phase arrangement which involves three conductors travelling together to the destination.
  • the structures involved for power transmission, at higher voltages up to 1 ,000 kN, are larger and more complex, but employ the same elements of support structure, cross member, insulator and conductor.
  • the insulators are attached to either steel or timber cross-arms.
  • the insulators have been ceramic.
  • Ceramic insulators have a number of disadvantages. For example, they cannot be cast in asymmetrical shapes. Porcelain insulators also have to be assembled from multiple components with steel joining sections. Ceramic insulators also have the disadvantage that the difference in the thermal coefficients of expansion between the steel sections and the ceramic insulating material, together with the brittleness ofthe ceramic, means that failure by fracture ofthe ceramic is prevalent.
  • the traditional cross-arms have been of either timber, or more recently, steel. Both timber and steel cross-arms have disadvantages.
  • the steel cross-arm is a conductor and any breakdown in the insulator causes an immediate short-circuit to earth or to the adjacent conductor, resulting in interruption to power supply.
  • Insulators are attached to the cross-arm by means of a variety of sometimes complex steel plates, bolts, nuts, washers or the like that require a linesperson to fit as many as twelve components to attach one insulator. The linesperson will need to fit as three such insulators, and fit the cross-arm itself.
  • the present invention accordingly aims to provide electrical reticulation apparatus which does not require the attachment of insulators to cross-arms.
  • the present invention also aims to provide electrical reticulation apparatus which does not use timber or steel cross arms.
  • the present invention accordingly provides electrical reticulation apparatus for use in an electrical reticulation system which includes poles, towers or the like for the support of overhead conductors, the reticulation apparatus including an insulating support member:-
  • the reticulation apparatus includes means for mounting the support member to the pole, tower or the like.
  • each attachment means be provided integrally with one end of an arm, and that the other end of the arm be provided integrally with the means for mounting the support member to the pole, tower or the like.
  • the reticulation apparatus include at least two such arms. It is especially preferred that these two arms extend co-linearly.
  • the reticulation apparatus include a third arm, which is orientated to extend in a direction mid-way between the other two arms.
  • the reticulation apparatus include a socket for the reception ofthe top of a pole.
  • each arm there be at least one shed provided on each arm, between the mounting means and the means for mounting the support member to the pole, tower or the like.
  • means for the temporary mounting of a block and tackle or the like be provided on at least one arm between the mounting means and the sheds.
  • the apparatus be a casting.
  • the apparatus be cast in an epoxy, phenolic, polyester, vinyl ester or polyurethane resin. It is especially preferred that the apparatus be cast in cyclo- aliphatic epoxy.
  • the apparatus be a composite structure which includes reinforcing which is within a casting.
  • the apparatus includes a guard to guard against access by possums or like animals, which possum guard is void in its interior and which includes a generally frustro-conical surface which flares outwardly.
  • Figure 1 is a side elevational view of electrical reticulation apparatus according to one embodiment ofthe present invention.
  • Figure 2 is a side elevational view, showing some hidden detail, of electrical reticulation apparatus according to another embodiment ofthe present invention.
  • Figure 3 is an elevational view ofthe embodiment of figure 2, showing it when mounted on a pole.
  • Figure 4 is an elevational view, partly in section, of a modification of a portion of the embodiments of figures 1 and 3.
  • Figure 5 is an elevational view of another embodiment ofthe present invention.
  • Figure 6 is a plan view ofthe embodiment of figure 5, showing it when mounted on a pole.
  • Electrical reticulation apparatus according to one embodiment ofthe present invention, and which is adapted for use in a three-phase power supply is indicated generally at 1 in figure 1.
  • the apparatus 1 includes three arms 2, 3 and 4 which are provided integrally.
  • the arms 2 and 3 are configured so that they can extend generally horizontally when the apparatus 1 is mounted on a pole, tower or the like.
  • the arm 4 is provided centrally between arms 2 and 3 and is configured to extend generally vertically when the apparatus 1 is mounted on a pole, tower or the like.
  • the apparatus 1 includes means 11 for mounting the apparatus to the pole, tower or the like.
  • the mounting means 11 includes a socket for the reception ofthe top of a pole.
  • Alternative embodiments ofthe invention which are not illustrated use other suitable mounting means.
  • the ends of the arms 2, 3 and 4 which are remote from the mounting means 11 carry mountings 6, 7 and 8 respectively.
  • the mountings 6, 7 and 8 are similar to the mountings which are used for retention of overhead conductors by traditional ceramic insulators.
  • Sheds 12, 13 and 14 are provided on the arms 2, 3 and 4 respectively and serve the same functions as do the sheds on a traditional ceramic insulator. There are additional sheds 15 in the transitional region between the mounting means 11 and the arm 4 to provide additional protective creepage from the conductors to the pole or tower.
  • a support member 1 When mounting conductors on a cross-arm or the like, workers currently may temporarily attach a block and tackle or the like to the cross-arm to lift cable up to the cross-arm. It is accordingly preferred that a support member 1 according to the present invention further include a mounting means (which is not illustrated in the drawings) integrally with either or both ofthe arms (2 and 3) at a position between the mounting means (6 and 7) and the sheds (12 and 13) for temporarily mounting a block and tackle or the like.
  • a mounting means which is not illustrated in the drawings
  • the one-piece structure of apparatus 1 does not require any pre- assembly before it mounted on a pole or tower or before the overhead conductors are attached to it.
  • the lengths ofthe arms 2 and 3 can be varied to achieve the preferred or specified clear air distance which is required between conductors.
  • the embodiment ofthe invention which is shown in figures 2 and 3 is the same as the embodiment of figure 1 except that it includes a possum guard 21.
  • the possum guard 21 includes a frustro-conical surface which flares outwardly from the apparatus.
  • the interior of the possum-guard 21 is void, and surrounds the end of the supporting pole or the like 22 to prevent possums from climbing from the pole 22 onto the apparatus.
  • FIG 4 shows a preferred form or the embodiments of figures 1 to 3.
  • This embodiment differs from figures 1 to 3 in that the sheds 24 are inclined at an angle away from the horizontal. This orientation ofthe sheds encourages the run-off of pollution from the surfaces of the sheds, particularly during rain storms.
  • inventions ofthe invention which are shown in figures 5 and 6 are adapted for use in a two-phase power supply have only two arms such as arms 2 and 3. It is preferred that these arms are mounted horizontally opposed.
  • Figures 5 and 6 also illustrate a method of mounting the apparatus to the pole 28. It is to be understood that this method of mounting is also suitable for three-phase apparatus, and is not limited to the two-phase form of the invention which is illustrated in these figures.
  • the apparatus 1 includes bolt holes 31 and 32 extending through it for reception of mounting hardware 26 and 27.
  • the mounting hardware 26 and 27 is used to mount the apparatus 1 to a pole or the like 28.
  • the creepage (which is the distance from conductor to earth) is vastly higher than in traditional configurations. This improves protection of the reticulation system from the effects of lightning, pollution and salt spray. Also, protected creepage (the interruption of a direct line of potential arcing between conductor and earth or between conductors) is provided in an optimal manner. As there are no metal components attaching an insulator to a cross-arm, assembly labour is greatly reduced compared with the prior art.
  • the weight ofthe apparatus according to the present invention is also significantly less than the weight of a comparable assembly of a steel or timber cross-arm with attached insulators.
  • the apparatus of the present invention is also strong in every direction as it is free from flaws that are common in timber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Insulators (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

L'appareil de réticulation électrique (1) remplace la construction d'isolateur(s) et de bras transversal classique pour lignes aériennes d'électricité. L'appareil (1) constitue un moulage unitaire ou une structure composite et est entièrement isolé. Il comprend des bras (2 et 3) conçus pour être orientés pratiquement horizontalement lors de leur utilisation et un bras (4) conçu pour être orienté quasiment verticalement lors de son utilisation. Un dispositif de montage (11) permet de monter l'appareil (11) à un pôle, un pylône ou similaire. Les extrémités des bras (2, 3 et 4) distantes du dispositif de montage (11) sont élaborées pour retenir les conducteurs aériens.
PCT/AU2000/001176 1999-09-28 2000-09-28 Bras transversal constitue d'isolateur WO2001023691A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU77634/00A AU771648B2 (en) 1999-09-28 2000-09-28 Cross arm formed of insulator
CA002385741A CA2385741C (fr) 1999-09-28 2000-09-28 Bras transversal constitue d'isolateur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ3126A AUPQ312699A0 (en) 1999-09-28 1999-09-28 Electrical reticulation apparatus
AUPQ3126 1999-09-28

Publications (1)

Publication Number Publication Date
WO2001023691A1 true WO2001023691A1 (fr) 2001-04-05

Family

ID=3817290

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/001176 WO2001023691A1 (fr) 1999-09-28 2000-09-28 Bras transversal constitue d'isolateur

Country Status (4)

Country Link
AU (1) AUPQ312699A0 (fr)
CA (1) CA2385741C (fr)
MY (1) MY129056A (fr)
WO (1) WO2001023691A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007070966A2 (fr) * 2005-12-23 2007-06-28 Preformed Line Products Company Traverse de service améliorée
AU2007101043B4 (en) * 2005-12-23 2008-06-05 Preformed Line Products (Australia) Pty Ltd Improved utility cross-arm
US8470969B2 (en) 2001-11-13 2013-06-25 Genentech, Inc. Apo-2 ligand/trail formulations
CN108952303A (zh) * 2018-08-30 2018-12-07 中国能源建设集团陕西省电力设计院有限公司 一种330kV双回路复合横担窄基塔
RU2722177C1 (ru) * 2019-05-07 2020-05-28 ОАО "Сетевая компания" ТРАВЕРСА И СПОСОБ ЗАМЕНЫ ОДНОСТОЕЧНОЙ ПРОМЕЖУТОЧНОЙ ОПОРЫ НА ВОЗДУШНОЙ ЛИНИИ ДО 1 кВ С НЕИЗОЛИРОВАННЫМИ ПРОВОДАМИ БЕЗ ОТКЛЮЧЕНИЯ ЭЛЕКТРОУСТАНОВКИ
RU2781851C1 (ru) * 2021-09-16 2022-10-19 Сергей Евгеньевич Пешнин Способ восстановления воздушных линий электропередачи 6-110 кв или организации временного электроснабжения и устройство для его осуществления
WO2023140932A1 (fr) * 2022-01-21 2023-07-27 S&C Electric Company Isolateur a tôles asymétriques

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB751124A (en) * 1954-03-02 1956-06-27 George Osborne Mclean Improvements in supporting and insulating systems for overhead electric lines
CH473453A (de) * 1968-04-04 1969-05-31 Langenthal Porzellan Stützisolator für elektrische Freileitungen
US4682747A (en) * 1986-04-24 1987-07-28 King Jr Halm C Utility insulated cross-arm
US4701577A (en) * 1985-05-28 1987-10-20 Manufacture D'appareillage Electrique De Cahors Cable support for an electric power-line pole
CA2051515A1 (fr) * 1991-07-24 1993-01-25 Delano F. Fowler Support de fils transmetteurs
CA2021868C (fr) * 1990-07-24 1995-04-18 Delano F. Fowler Traverse pour fil transmetteur
US6027082A (en) * 1998-11-03 2000-02-22 Cai Unit, Inc. Convertible electric utility cross arm insulator unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB751124A (en) * 1954-03-02 1956-06-27 George Osborne Mclean Improvements in supporting and insulating systems for overhead electric lines
CH473453A (de) * 1968-04-04 1969-05-31 Langenthal Porzellan Stützisolator für elektrische Freileitungen
US4701577A (en) * 1985-05-28 1987-10-20 Manufacture D'appareillage Electrique De Cahors Cable support for an electric power-line pole
US4682747A (en) * 1986-04-24 1987-07-28 King Jr Halm C Utility insulated cross-arm
CA2021868C (fr) * 1990-07-24 1995-04-18 Delano F. Fowler Traverse pour fil transmetteur
CA2051515A1 (fr) * 1991-07-24 1993-01-25 Delano F. Fowler Support de fils transmetteurs
US6027082A (en) * 1998-11-03 2000-02-22 Cai Unit, Inc. Convertible electric utility cross arm insulator unit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198005, Derwent World Patents Index; Class R41, AN 1980-A9505C *
SOVIET INVENTIONS ILLUSTRATED Section II May 1967 Derwent World Patents Index; Page 17, ELECTRICITY, ELECTRONICS, COMMUNICATIONS: "Electrical, C" *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8470969B2 (en) 2001-11-13 2013-06-25 Genentech, Inc. Apo-2 ligand/trail formulations
WO2007070966A2 (fr) * 2005-12-23 2007-06-28 Preformed Line Products Company Traverse de service améliorée
WO2007070966A3 (fr) * 2005-12-23 2007-09-07 Preformed Line Products Austra Traverse de service améliorée
AU2007101043B4 (en) * 2005-12-23 2008-06-05 Preformed Line Products (Australia) Pty Ltd Improved utility cross-arm
CN108952303A (zh) * 2018-08-30 2018-12-07 中国能源建设集团陕西省电力设计院有限公司 一种330kV双回路复合横担窄基塔
RU2722177C1 (ru) * 2019-05-07 2020-05-28 ОАО "Сетевая компания" ТРАВЕРСА И СПОСОБ ЗАМЕНЫ ОДНОСТОЕЧНОЙ ПРОМЕЖУТОЧНОЙ ОПОРЫ НА ВОЗДУШНОЙ ЛИНИИ ДО 1 кВ С НЕИЗОЛИРОВАННЫМИ ПРОВОДАМИ БЕЗ ОТКЛЮЧЕНИЯ ЭЛЕКТРОУСТАНОВКИ
RU2781851C1 (ru) * 2021-09-16 2022-10-19 Сергей Евгеньевич Пешнин Способ восстановления воздушных линий электропередачи 6-110 кв или организации временного электроснабжения и устройство для его осуществления
WO2023140932A1 (fr) * 2022-01-21 2023-07-27 S&C Electric Company Isolateur a tôles asymétriques
RU221648U1 (ru) * 2022-12-22 2023-11-15 Общество с ограниченной ответственностью "Газпром трансгаз Ухта" Приспособление для правки деформированных траверс воздушных линий электропередач

Also Published As

Publication number Publication date
AUPQ312699A0 (en) 1999-10-21
MY129056A (en) 2007-03-30
CA2385741A1 (fr) 2001-04-05
CA2385741C (fr) 2007-09-18

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