EP1205946A1 - Isolateur support de conducteur électrique - Google Patents

Isolateur support de conducteur électrique Download PDF

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Publication number
EP1205946A1
EP1205946A1 EP00124251A EP00124251A EP1205946A1 EP 1205946 A1 EP1205946 A1 EP 1205946A1 EP 00124251 A EP00124251 A EP 00124251A EP 00124251 A EP00124251 A EP 00124251A EP 1205946 A1 EP1205946 A1 EP 1205946A1
Authority
EP
European Patent Office
Prior art keywords
conductor
support insulator
main circuit
conductor support
insulator
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Withdrawn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
EP00124251A
Other languages
German (de)
English (en)
Inventor
Michiharu Okuno
Aiichiro Hashizume
Junichiro Nishitani
Masahiro Arioka
Masaaki Takeshita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to EP00124251A priority Critical patent/EP1205946A1/fr
Publication of EP1205946A1 publication Critical patent/EP1205946A1/fr
Withdrawn legal-status Critical Current

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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
    • H01B17/18—Supporting insulators for very heavy conductors, e.g. bus-bars, rails

Definitions

  • This invention relates to an electrical conductor support insulator for supporting an electrical conductor.
  • Fig. 11 is a side view illustrating a manner in which a main circuit conductor within a switchgear is supported by a conventional conductor support insulator (hereinafter referred to as the first conventional insulator).
  • the reference numeral 11 is an electrically insulating support insulator, and a bushing 12 with a female thread therein is provide at the upper and the lower end portions of the conductor support insulator 11.
  • the lower end portion of the conductor support insulator 11 is secured to a support frame 14 by a bolt 13 thread-engaged into the bushing 12.
  • a main circuit conductor 15 disposed within a switchgear is mounted to the conductor support insulator 11 by a bolt 16 thread-engaged with the bushing 12.
  • the conductor support insulator 11 In supporting the main circuit conductor 15 disposed within the switchgear, the conductor support insulator 11 is secured to the support frame 14 by the bolt 15, forming in the main circuit conductor 15 a mounting hole through which the bolt 16 is passed, and the main circuit conductor 15 is secured by the bolt 16 directly to the conductor support insulator 11.
  • Fig. 12 is a side view illustrating another manner in which a main circuit conductor within a switchgear is supported by a conventional conductor support insulator (hereinafter referred to as the second conventional insulator).
  • the reference numeral 21 is an electrically insulating support insulator, and a bushing 22 with a female thread therein is provide at the upper and the lower end portions of the conductor support insulator 21.
  • the lower end portion of the conductor support insulator 21 is secured to a support frame 23 by through the bushing 22.
  • an L-shaped support metal fitting 24 is secured by the bolt 25 thread-engaged into the bushing 22.
  • a main circuit conductor 26 disposed within a switchgear is mounted to the support metal fitting 24 by a bolt 27.
  • the conductor support insulator 21 In supporting the main circuit conductor 26 disposed within the switchgear, the conductor support insulator 21 is secured to the support frame 23 and mounting the support metal fitting 24 to the conductor support insulator 21 by the bolt 25, forming in the main circuit conductor 26 a mounting hole through which the bolt 27 is passed, and the main circuit conductor 26 is secured by the bolt 27 to the support metal fitting 24.
  • the main circuit conductor was supported as above described, so that, when the main circuit conductors 15 or 26 disposed within a switchgear is to be supported, a mounting hole must be formed in the main circuit conductor 15 or 26 both in the first and the second conventional insulators. Also, in the second conventional insulator the support metal fitting 24 must be used.
  • the bushing 12 or 22 must be embedded within the conductor support insulator 11 or 21, thus increasing the cost and, when the main circuit conductor 15 or 26 which is an insulated conductor is to be supported, the bushings 12 or 22 are at intermediate potential which may lead to the insulation breakdown, causing a problem of failure in maintaining a necessary electrical insulation performance. Therefore, to cope with this problem, the insulation is removed from the fixed portion to make it at the same potential as the bare live portions but this raises another problem of difficulty in decreasing the space insulation distance with respect to the main circuit conductors in other phases and the grounded metal.
  • the bolt 13 when the conductor support insulator 11 is to be mounted to the support frame 14, the bolt 13 must be inserted and thread-engaged in the insulator from the back side of the support frame 14, resulting in a difficult and inefficient operability.
  • the present invention has been made in view of the above circumstance and has as its object the provision of an electrical conductor support insulator in which, by providing a hole that can pass and support a plurality of kinds of conductors, no bushing is provided and no securing member such as bolt and support metal fitting is needed and in which various kinds of electrical conductors can be simply and easily supported
  • Another object of the present invention is to provide an electrical conductor support insulator in which the step portion is made to have a cross-shaped cross section, whereby the amount of the insulating material to be used can be reduced and the cost can be decreased.
  • Still another object of the present invention is to provide an electrical conductor support insulator in which one portion of the mounting portion to be secured to an external member such as the support frame or the like is formed into a slot having a U-shape, whereby the assembly efficiency can be improved.
  • the electrical conductor support insulator of the present invention is provided with a hole for passing therethrough and supporting an electrical conductor.
  • An edge of the hole may be formed into a curved configuration in which patterns are partially different for passing through and supporting a plurality of electrical conductors of different configurations.
  • the hole configuration is selected so that its fits to various kinds of conductors. Therefore the various conductors can be supported and various conductor arrangements within the switchgear can be realized.
  • the configuration of a stem portion may have a cross-shaped cross section.
  • the stem portion of the insulator may have a cross section of the cross-shape in order to maintain the strength. Therefore, the insulating material used can be reduced as compared to the stem of cylindrical shape.
  • a fixed portion for being fixed to an external body may be provided, and one portion of the fixed portion may be formed into a slit of a U-shape.
  • the fixed portion to be fixed to the external body may be formed into the slit of the U-shape. Therefore, the mounting operation of the conductor support insulator to the external body can be achieved from the insulator side, resulting in an improvement in the operation efficiency.
  • Figs. 1a and 1b are front and side views of the electrical conductor support insulator of the present invention
  • Figs. 2a and 2b are top and bottom views of the electrical conductor support insulator of the present invention.
  • a hole 1a for passing through and supporting various kinds of main circuit conductors disposed within a switchgear is formed in the upper portion (head portion) of the conductor support insulator 1, a hole 1a for passing through and supporting various kinds of main circuit conductors disposed within a switchgear is formed.
  • the circumferential edge of this hole 1a has a configuration in which arcs of various radii are connected so that the main circuit conductors of one or a plurality of various configurations may be passed threthrough and supported.
  • a reinforcing member 1b for maintaining a mechanical strength is provided in the middle portion (stem portion) of the conductor support insulator 1.
  • the lower portion (foot portion) of the conductor support insulator 1, which is a mounting portion to a support frame 3 which will be described later, has formed at four positions of the mounting portion a substantially U-shaped slits for providing bolt mounting portion 1c.
  • the conductor support insulator 1 of the above-described structure is integrally molded with a molding material of epoxy resin groups and glass base material polyester resin groups.
  • FIGs. 3 and 4 are a side view and an enlarged front view showing an example of the manner in which a main circuit conductor is supported by the electrical conductor support insulator.
  • two main circuit conductors 2, 2 are passed through and supported by the hole 1a of the conductor support insulator 1 in the horizontal direction.
  • FIGs. 5 and 6 are a side view and an enlarged front view showing another example of the manner in which a main circuit conductor is supported by the electrical conductor support insulator.
  • a single main circuit conductor 2 is passed through and supported by the hole 1a of the conductor support insulator 1 in the vertical direction.
  • Figs. 7 to 10 are enlarged front views showing still other examples of the manner in which a main circuit conductor is supported by the electrical conductor support insulator.
  • a single main circuit conductor 2 that has a width equal to that of the examples shown in Figs. 3 and 4 is passed through and supported by the hole 1a of the conductor support insulator 1 in the horizontal direction.
  • a single main circuit conductor 2 that has a width smaller than that of the example shown in Fig. 7 is passed through and supported by the hole 1a of the conductor support insulator 1 in the horizontal direction.
  • Fig. 7 a single main circuit conductor 2 that has a width smaller than that of the example shown in Fig. 7 is passed through and supported by the hole 1a of the conductor support insulator 1 in the horizontal direction.
  • a single main circuit conductor 2 that has a width larger man that of the example shown in Figs. 5 and 6 is passed through and supported by the hole 1a of the conductor support insulator 1 in the vertical direction.
  • two main circuit conductors 2, 2 that has a width equal to that of the example shown in Fig. 9 are passed through and supported by the hole 1a of the conductor support insulator 1 in the vertical direction.
  • the manner in which the main circuit conductor 2 to be supported is mounted (the horizontal mounting, the vertical mounting), the size (large width, small width) and number (one, two) can be selected according to the current to be carried. It is to be noted that the above described configuration of the hole 1a of the conductor support insulator 1 and the mounting example of the main circuit conductor 2 are mere examples and that the present invention is not limited thereto.
  • the conductor support insulator 1 is secured to the support frame 3 by a mounting bolt 4 through the bolt mounting portion 1c of the conductor support insulator 1 (see Figs. 3 and 5).
  • this mounting operation can completely be achieved from the conductor support insulator 1 side, thus improving the operation efficiency.
  • the mounting position of the conductor support insulator 1 relative to the support frame 3 can be determined by moving the mounting bolts 4 within the bolt mounting portion 1c of the U-shaped slits.
  • one or two main circuit conductors 2 to be supported within the switchgear is passed through and supported by the hole 1a of the conductor support insulator 1.
  • the arc shape of the circumference edge of the hole 1a is utilized to support one or plurality of main circuit conductors 2 by the conductor support insulator 1 without using any mounting member such as bolts, support metal fittings or the like.
  • various main circuit conductors 2 can be supported by the conductor support insulator 1 irrespective of their size, shape and number.
  • main circuit conductor 2 can be supported without the need for the bolt mounting, when an electrically insulated main circuit conductor 2 is used, the main circuit conductor 2 can be supported with the insulation maintained, so that the space insulating distance with respect to other main circuit conductors, surrounding grounded metal members can be shortened as compared to the conventional design.
  • the electrical conductor support insulator of the present invention a hole for passing therethrough and supporting an electrical conductor is provided, so that the conductor can be easily supported without the need for the use of any special member such as bolts, support metal fittings or the like conventionally needed. Also, the bushing in the conductor support insulator is made unnecessary, allowing the space insulation distance to be shortened and an insulated conductor can be held as it is. Also, any special mounting member such as bolts, support metal fittings or the like is not needed, allowing the number of parts to be decreased and the operation time to be shortened, resulting in a low cost switchgear.
  • a circumference edge of the hole may be formed into a curved configuration in which patterns are partially different for passing through and supporting a plurality of electrical conductors of different configurations, so that various kinds of conductors of different shapes can be supported, permitting various conductor arrangements within the switchgear.
  • the configuration of a stem portion has a cross-shaped cross section, so that the amount of insulator material can be reduced, thereby the reduction of cost can be realized.
  • a mounting portion for being fixed to an external body such as the support frame is provided, and one portion of said fixed portion is formed into a slit of a U-shape, so that the mounting operation of the conductor support insulator can be carried out from the side of the conductor support insulator and does not have to be carried out from the back side of the support frame as done in the conventional technique, enabling the improvement in the operation efficiency.
EP00124251A 2000-11-10 2000-11-10 Isolateur support de conducteur électrique Withdrawn EP1205946A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00124251A EP1205946A1 (fr) 2000-11-10 2000-11-10 Isolateur support de conducteur électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00124251A EP1205946A1 (fr) 2000-11-10 2000-11-10 Isolateur support de conducteur électrique

Publications (1)

Publication Number Publication Date
EP1205946A1 true EP1205946A1 (fr) 2002-05-15

Family

ID=8170311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124251A Withdrawn EP1205946A1 (fr) 2000-11-10 2000-11-10 Isolateur support de conducteur électrique

Country Status (1)

Country Link
EP (1) EP1205946A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004061872A1 (fr) * 2002-12-20 2004-07-22 Siemens Aktiengesellschaft Isolateur support en forme de colonne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1194113A (fr) * 1959-11-06
FR1222403A (fr) * 1952-11-12 1960-06-09 Isolateur pour clôtures électriques
FR1271237A (fr) * 1960-07-29 1961-09-08 Const Radio Electr Du Bearn Isolateur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1194113A (fr) * 1959-11-06
FR1222403A (fr) * 1952-11-12 1960-06-09 Isolateur pour clôtures électriques
FR1271237A (fr) * 1960-07-29 1961-09-08 Const Radio Electr Du Bearn Isolateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004061872A1 (fr) * 2002-12-20 2004-07-22 Siemens Aktiengesellschaft Isolateur support en forme de colonne

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