EP1952407A1 - Isolation renforcée en mica - Google Patents

Isolation renforcée en mica

Info

Publication number
EP1952407A1
EP1952407A1 EP06793986A EP06793986A EP1952407A1 EP 1952407 A1 EP1952407 A1 EP 1952407A1 EP 06793986 A EP06793986 A EP 06793986A EP 06793986 A EP06793986 A EP 06793986A EP 1952407 A1 EP1952407 A1 EP 1952407A1
Authority
EP
European Patent Office
Prior art keywords
mica
tube
insulating tube
carrier
hose
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.)
Granted
Application number
EP06793986A
Other languages
German (de)
English (en)
Other versions
EP1952407B1 (fr
Inventor
Bernhard Klaussner
Willi Lutz
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1952407A1 publication Critical patent/EP1952407A1/fr
Application granted granted Critical
Publication of EP1952407B1 publication Critical patent/EP1952407B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]

Definitions

  • the invention relates to a mica-reinforced insulating tube for the isolation of electrical contact connections.
  • Electrical contact connections of electrical equipment, eg. B between coils of electrical machines or transformers are to be insulated against each other and against ground potential, in particular at rated voltages of more than 1 kV. This is followed, in particular for electrical equipment in the rated voltage range from 1 KV insulation of the contact connections by manual wrapping with Glim- merb skilledn.
  • JP 1160339 A2 discloses a microfluidic tube which has a plurality of layers, wherein the inner layer consists of strips containing mica and is followed by a resin coating which is surrounded by a heat-shrinkable tube.
  • the object of the invention to provide for contact connections in particular for electrical equipment with rated voltages above 1 KV insulation, which are easy to manufacture and have low wall thicknesses. Furthermore, the insulation should be flexible, so that corresponding contact connections can also be isolated with sufficient electrical strength.
  • the solution of the problem is also achieved by a method for producing a mica reinforced insulating hose characterized by the following steps: - A carrier hose is expanded by compressed air and / or a mandrel to a desired inner diameter, - a mica tape is located around in this state
  • Braided carrier hose - The overlap and / or the number of layers of mica tape is adjustable.
  • This mica reinforced insulation according to the invention is characterized by a layered structure which, according to the invention, is characterized by a carrier tube and mica materials located thereon.
  • a mica bandage By means of single-layer or multi-layer layers of a mica bandage with adjustable overlapping, the electrical strength or the partial discharge resistance can be adapted to the respective voltage requirements. These are the rated voltage stresses as well as the expected over-voltage effects in inverter operation of electrical machines or due to overvoltages due to network anomalies, e.g. Lightning strike or traveling wave effects on electrical wires and cables.
  • the layered construction can be carried out, for example, by braiding a fabric tube, which is braided, knitted or embroidered, with a coating of mica tape. Furthermore, continuous one-piece hoses with a coating of PU, acrylate or silicone with a mica tape can also be wrapped around in order to obtain a mica reinforced insulating hose for the insulation of electrical contact connections.
  • Mica is an inorganic insulating material and has comparatively very good electrical insulation and heat properties. In addition, a very good creepage and puncture resistance.
  • the electricity constant ⁇ r is between 5 and 8.
  • a mica tape has small pieces of mica, which are glued with a binder and pressed under the action of heat.
  • the density of mica pieces directly affects the electrical insulation properties.
  • this porous mica tape on an accelerator, which thereby favors the curing of the impregnating resin in the carrier tube.
  • mica reinforced insulating hose is provided with a mechanical protection of a fiber braid, which may be a glass or plastic fiber.
  • the inventive mica-reinforced insulating tube is produced in a preferred embodiment by the following steps: by compressed air and / or by a mandrel, the carrier tube is brought to the desired inner diameter, and in this state surrounded by a mica tape.
  • these two or three operations, producing the carrier tube with subsequent rewinding of the mica tape and possibly applying a mechanical see protective tube or protective braid can be performed by a device or a work process.
  • the mica content increases the electrical strength and the partial discharge resistance of the insulation even with a small wall thickness than unreinforced lacquered or extruded insulating hoses.
  • the mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is e.g. significantly increased by the tissue reinforcement of the carrier tube. This also prevents a shift of the layers of mica tape, especially in the assembly of other parts, so that the electrical resistance of the electrical equipment can be guaranteed.
  • contacts in the rated voltage range above 1 kV can also be made resistant to partial discharges in a simple manner.
  • these hoses, which are now formed, are pushed over the respective location to be insulated in the case of the respective electrical equipment, such as electrical machines, converters, or transformers, without having to fear that the existing layers of the insulation will change their position.
  • the insulation is thus applied before the final shaping of the contact connection and withstands the mechanical stresses in this shaping.
  • the figure shows a section of an inventive insulation tube 1, the base of which forms a braided glass tube which is designed as a carrier tube 2.
  • This braided glass tube 2 is surrounded by a jacket 3, for example, LSR (liquid silicone rubber).
  • This jacket 3 is constructed, for example, from liquid silicone rubber.
  • This arrangement is now surrounded by a mica tape 4, which results in a mica layer defined layer thickness by a predetermined number of layers and / or a predetermined overlap of the individual layers.
  • the respective glimmer bands 4 advantageously have a respectively defined layer thickness and / or layer width.
  • a PET (poly-ethylene terrevalate) fiber braid 5 is suitable.
  • the preparation takes place in a correspondingly designed device, which can apply the individual layers defined.
  • the manufacturing steps are performed in a device.
  • knitted or knitted carrier hose 2 made of glass or synthetic fibers is brought to the desired inner diameter, for example by compressed air.
  • the carrier hose 2 can also be applied to a correspondingly dimensioned mandrel.
  • the carrier tube 2 is provided before the next step with a jacket 3 made of PU, acrylate or silicone.
  • the mica tape 4 is porous and advantageously contains an accelerator, in order thereby to favor the hardening of a potion resin in the carrier hose 2.
  • the mica portion of the carrier hose 2 is varied in sections and thus adjusted in a predeterminable manner.
  • a mechanical protection of the glim- merbandumsponnene carrier hose 2 is provided with a fiber mesh 5 made of glass or plastic fibers in an advantageous manner.
  • the mica content increases the electrical strength and the partial charge resistance of the insulating tube 1 with respect to painted or extruded relatively low wall thickness.
  • the mechanical strength and flexibility over conventional rolled mica tape rolls or tubes is among other things by the fabric reinforcement of the carrier tube 2 compared to other insulating tubes significantly increased.
  • the inventive mica reinforced insulating tube 1 has at least one of a mica tape 4 braided carrier hose 2.
  • a sheath 3 and / or a fiber braid 5 are provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Insulating Bodies (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP06793986A 2005-11-21 2006-10-06 Isolation renforcée en mica Not-in-force EP1952407B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005055290A DE102005055290B3 (de) 2005-11-21 2005-11-21 Glimmerverstärkter Isolierschlauch
PCT/EP2006/067141 WO2007057251A1 (fr) 2005-11-21 2006-10-06 Isolation renforcée en mica

Publications (2)

Publication Number Publication Date
EP1952407A1 true EP1952407A1 (fr) 2008-08-06
EP1952407B1 EP1952407B1 (fr) 2009-02-25

Family

ID=37492452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06793986A Not-in-force EP1952407B1 (fr) 2005-11-21 2006-10-06 Isolation renforcée en mica

Country Status (7)

Country Link
US (1) US20080286505A1 (fr)
EP (1) EP1952407B1 (fr)
CN (1) CN101313369B (fr)
AT (1) ATE424029T1 (fr)
BR (1) BRPI0618803B1 (fr)
DE (2) DE102005055290B3 (fr)
WO (1) WO2007057251A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824801A1 (fr) 2013-07-12 2015-01-14 Siemens Aktiengesellschaft Procédé de fabrication d'une machine rotative dynamoélectrique et machine rotative dynamoélectrique
EP2874280A1 (fr) 2013-11-14 2015-05-20 Siemens Aktiengesellschaft Masse de fermeture à encoche, fermeture à encoche et procédé de fabrication d'une fermeture à encoche
US10354779B2 (en) * 2017-03-31 2019-07-16 Radix Wire & Cable, Llc Free air fire alarm cable
US11411278B2 (en) * 2019-03-01 2022-08-09 Milwaukee Electric Tool Corporation Power tool and battery pack for use with the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2772696A (en) * 1953-04-21 1956-12-04 Westinghouse Electric Corp Flexible resin bonded mica members
US3823255A (en) * 1972-04-20 1974-07-09 Cyprus Mines Corp Flame and radiation resistant cable
US4607851A (en) * 1977-11-30 1986-08-26 Metex Corporation Method of making composite wire mesh seal
FR2573910B1 (fr) * 1984-11-29 1987-06-19 Habia Cable Revetement isolant souple resistant au feu pour conduites, fils et cables electriques
DE3514879A1 (de) * 1985-04-04 1986-10-09 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Verfahren zur herabsetzung der wasserdampfdiffusion in einem aus mehreren schichten bestehenden kunststoff-verbundisolator
JPS62154505A (ja) * 1985-12-26 1987-07-09 アクソン・カーブル・エス・アー 管、電線、電気ケ−ブル及び光フアイバ用耐火性可撓性絶縁被覆
JPH01160339A (ja) * 1987-12-17 1989-06-23 Toshiba Corp 回転電機の絶縁コイルの製造方法
US5144739A (en) * 1991-06-26 1992-09-08 General Electric Company Method of establishing a leakage current path for a commutator
DE4244298C2 (de) * 1992-12-28 2003-02-27 Alstom Isolierband und Verfahren zu seiner Herstellung
DE4434825A1 (de) * 1994-09-29 1996-05-23 Tissu Rothrist Ag Verbundwerkstoff in Flachform

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007057251A1 *

Also Published As

Publication number Publication date
US20080286505A1 (en) 2008-11-20
CN101313369A (zh) 2008-11-26
EP1952407B1 (fr) 2009-02-25
WO2007057251A1 (fr) 2007-05-24
ATE424029T1 (de) 2009-03-15
BRPI0618803B1 (pt) 2018-01-23
CN101313369B (zh) 2011-11-23
BRPI0618803A2 (pt) 2011-09-13
DE502006002980D1 (de) 2009-04-09
DE102005055290B3 (de) 2007-05-03

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