EP0545038B1 - Parafoudre - Google Patents

Parafoudre Download PDF

Info

Publication number
EP0545038B1
EP0545038B1 EP92117361A EP92117361A EP0545038B1 EP 0545038 B1 EP0545038 B1 EP 0545038B1 EP 92117361 A EP92117361 A EP 92117361A EP 92117361 A EP92117361 A EP 92117361A EP 0545038 B1 EP0545038 B1 EP 0545038B1
Authority
EP
European Patent Office
Prior art keywords
connecting fittings
surge voltage
voltage arrester
pellet
arrester according
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.)
Expired - Lifetime
Application number
EP92117361A
Other languages
German (de)
English (en)
Other versions
EP0545038A1 (fr
Inventor
Klaus Giese
Walter Nydegger
Walter Schmidt
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0545038A1 publication Critical patent/EP0545038A1/fr
Application granted granted Critical
Publication of EP0545038B1 publication Critical patent/EP0545038B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors

Definitions

  • the invention is based on a surge arrester according to the preamble of claim 1.
  • a surge arrester is known with two fittings braced against one another by an insulating rod.
  • the insulating rod penetrates cylindrical varistor elements which are layered into a stack in the center thereof.
  • the fittings limit the stack of varistor elements.
  • the arrangement described is encapsulated with insulating material, insulating material also being introduced into the area around the insulating rod in the interior of the stack.
  • a surge arrester is known from WO-A-9117554, in which the two fittings are braced by three isolating rods, the isolating rods being arranged symmetrically to the longitudinal axis of the surge arrester.
  • the invention seeks to remedy this.
  • the invention as characterized in the independent claim, solves the problem of creating a surge arrester that can be created with simple means and that is also easy to cast.
  • the grooved washers ensure that a large number of contact points are formed for a perfect current transfer. The more clearly defined contact points arise, the better the current carrying capacity of a current transition. In addition, these soft washers advantageously compensate for any unevenness in the pill surface, so that these unevenness cannot reduce the current carrying capacity. It proves to be particularly advantageous that the grooved washers also seal the current transition zones of the surge arrester against the penetration of insulating material during the casting process.
  • the surge arrester has two metal connection fittings 1, 2.
  • the connection fitting 1 is provided with a fastening option (not shown) for an electrical conductor.
  • a threaded bore 3 is provided in the center, in which a pressure screw 4 is arranged.
  • the two connection fittings 1, 2 are connected to one another by two rigid, but somewhat stretchable in the axial direction, glass fiber reinforced plastic strips 5. These plastic strips 5 are fastened to the connection fittings 1, 2 by means of screws 6.
  • the plastic strips 5 have a rectangular cross section and are arranged symmetrically to the longitudinal axis of the surge arrester. As can be seen from FIGS.
  • connection fittings 1, 2 here have rectangular cross sections, but it is also possible to provide other cross sections, such as cylindrical ones.
  • the rectangular cross section of the connection fittings 1, 2 was chosen to save material and weight.
  • the frame formed by the connection fittings 1, 2 and the plastic strips 5 encloses pills 7 made of varistor material, such as ZnO.
  • the pills 7 are cylindrical.
  • a suitable plate 8 made of metal is inserted into a recess in the connection fitting 1. Between the plate 8 and the next pill 7, a cylindrically shaped grooved disk 9 is inserted, which has a central bore 10, as well as between adjacent pills 7.
  • the pressure screw 4 acts on the pressure plate 11 and guides the current from the pressure plate 11 to the connection fitting 2.
  • the arrangement thus finished is placed in a mold and cast without a gap or voids with a jacket 13 made of electrically insulating plastic.
  • a suitable plastic here is, for example, silicone rubber.
  • insulating screens 14 are formed at the same time. The entire arrangement is surrounded by the jacket 13, only the parts of the connection fittings 1, 2 that are required for electrical connections remain shiny metallic.
  • Fig. 1 three section lines are entered, section A-A in Fig. 2, section B-B in Fig. 3 and section C-C in Fig. 4 being shown.
  • 5 shows the pulley 9, which has a central bore 10.
  • a plurality of grooves 15 concentrically surround this bore 10.
  • the pulley 9 is made of soft annealed aluminum.
  • 10 shows an enlarged section through this grooved disk 9.
  • the outermost edges 16, 17 of the outermost grooves 15 also serve as a sealing edge against plastic that penetrates during potting.
  • a large number of groove shapes is conceivable, however, a sufficient sealing edge must always be formed, and it must also be ensured that a sufficient number of contact points can be formed when installing the groove washers 9.
  • plastic tapes or bundles of plastic fibers are used, if no high demands are placed on the resistance to breakage of the surge arrester. It is also possible to provide cross sections of the plastic strips 5 other than rectangular.
  • the contact force that is exerted on the arrangement by the pressure screw 4 ensures that the edges 16, 17 of the grooved disks 9 deform locally, as a result of which defined point-like contacts are created which allow particularly good current transfer.
  • the best current transfer is achieved when there are a large number of such point contacts, which are evenly distributed over an area.
  • the grooved washers 9 ensure this multitude of point contacts. This ensures that the comparatively very high current flowing when the surge arrester responds is always safely discharged through the active part of the surge arrester without a partial overloading of current transitions and the associated braising, which causes defects, can occur.
  • the operational safety of the arrester is significantly increased in this way.
  • the monolithic block to which the finished surge arrester is designed has high mechanical stability, in particular also with regard to the high resistance to breakage, and it is also insensitive to climatic influences, so that it can be used advantageously in all climatic zones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (7)

  1. Parafoudre avec deux armatures de raccordement (1, 2) réunies l'une à l'autre, avec au moins un bouchon (7) en matière de varistor serré entre les armatures de raccordement (1, 2), dans lequel il est prévu pour la réunion des armatures de raccordement (1, 2) au moins deux éléments tendeurs isolants disposés symétriquement à côté dudit au moins un bouchon (7), et dans lequel lesdits au moins deux éléments tendeurs, ledit au moins un bouchon (7) et partiellement les armatures de raccordement (1, 2) sont moulés en un bloc monolithique avec une matière plastique isolante, caractérisé en ce que
    - en guise d'éléments tendeurs, il est prévu des barres rigides en matière plastique (5), légèrement extensibles en direction axiale, et que
    - ces barres rigides en matière plastique (5) sont encastrées par emboîtement par leur extrémité dans chacune des armatures de raccordement (1, 2) et assemblées à celle-ci.
  2. Parafoudre suivant la revendication 1, caractérisé en ce que
    - en guise de barres en matière plastique (5) il est prévu des barres en résine époxyde renforcée par des fibres de verre.
  3. Parafoudre suivant l'une des revendications 1 ou 2, caractérisé en ce que
    - pour la fabrication de points de passage corrects du courant entre les armatures de raccordement (1, 2) et ledit au moins un bouchon (7), il est prévu une vis de pression (4).
  4. Parafoudre suivant l'une des revendications 1 à 3, caractérisé en ce que
    - à chaque point de passage du courant entre ledit au moins un bouchon (7) et les armatures de raccordement (1, 2), un disque métallique strié (9) assure le passage du courant, et que
    - entre des bouchons (7) voisins un disque métallique strié (9) assure le passage du courant.
  5. Parafoudre suivant la revendication 4, caractérisé en ce que
    - le disque métallique strié (9) présente un contour extérieur adapté aux bouchons (7), et que
    - le métal du disque strié (9) est adouci par recuit.
  6. Parafoudre suivant la revendication 5, caractérisé en ce que
    - aussi bien les bouchons (7) que les disques striés (9) sont de forme cylindrique.
  7. Parafoudre suivant l'une des revendications 4 à 6, caractérisé en ce que
    - le disque strié (9) est fabriqué en aluminium.
EP92117361A 1991-12-04 1992-10-10 Parafoudre Expired - Lifetime EP0545038B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3558/91 1991-12-04
CH3558/91A CH682858A5 (de) 1991-12-04 1991-12-04 Ueberspannungsableiter.

Publications (2)

Publication Number Publication Date
EP0545038A1 EP0545038A1 (fr) 1993-06-09
EP0545038B1 true EP0545038B1 (fr) 1995-05-10

Family

ID=4258582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117361A Expired - Lifetime EP0545038B1 (fr) 1991-12-04 1992-10-10 Parafoudre

Country Status (11)

Country Link
US (1) US5291366A (fr)
EP (1) EP0545038B1 (fr)
AT (1) ATE122496T1 (fr)
AU (1) AU655083B2 (fr)
CA (1) CA2081442C (fr)
CH (1) CH682858A5 (fr)
CZ (1) CZ280827B6 (fr)
DE (1) DE59202147D1 (fr)
ES (1) ES2074319T3 (fr)
HU (1) HU215656B (fr)
PL (1) PL171837B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007010857A1 (de) * 2007-03-01 2008-09-04 Siemens Ag Überspannungsableiter mit einer Varistoranordnung und Varistormodul zur Verwendung in einem Überspannungsableiter

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306691A1 (de) * 1993-03-04 1994-11-03 Abb Management Ag Ueberspannungsableiter
DE4319986A1 (de) * 1993-06-11 1994-12-15 Siemens Ag Überspannungsableiter
SI0642141T1 (en) * 1993-09-06 1997-10-31 Asea Brown Boveri Surge arrester
HUT69281A (en) * 1993-10-13 1995-09-28 Furukawa Electric Technologiai Monolith lightning arrester of high tensile stress
SE504075C2 (sv) * 1994-08-29 1996-11-04 Asea Brown Boveri Ventilavledare
FR2726118B1 (fr) * 1994-10-19 1996-12-06 Girard Francois Dispositif parafoudre
DE19504532A1 (de) * 1995-02-11 1996-08-14 Abb Management Ag Verfahren zur Herstellung eines Isolators
US5625523A (en) * 1995-04-03 1997-04-29 Nedriga; Walter N. Surge arrester
US5712757A (en) * 1996-06-27 1998-01-27 Raychem Corporation Surge arrester having ridged terminals
US5757604A (en) * 1996-06-27 1998-05-26 Raychem Corporation Surge arrester having grooved and ridged terminals
US5680289A (en) * 1996-06-27 1997-10-21 Raychem Corporation Surge arrester
DE19650579A1 (de) * 1996-12-06 1998-06-10 Asea Brown Boveri Überspannungsableiter
US6396676B1 (en) 1997-02-25 2002-05-28 Bowthrope Industries Limited Electrical surge arresters
US6008975A (en) * 1997-03-03 1999-12-28 Mcgraw-Edison Company Self-compressive surge arrester module and method of making same
US6519129B1 (en) 1999-11-02 2003-02-11 Cooper Industries, Inc. Surge arrester module with bonded component stack
US6279811B1 (en) 2000-05-12 2001-08-28 Mcgraw-Edison Company Solder application technique
US6657128B2 (en) 2001-01-29 2003-12-02 Mcgraw-Edison Company Hydrophobic properties of polymer housings
US7015786B2 (en) * 2001-08-29 2006-03-21 Mcgraw-Edison Company Mechanical reinforcement to improve high current, short duration withstand of a monolithic disk or bonded disk stack
SE527132C2 (sv) 2003-04-30 2005-12-27 Abb Technology Ltd Ventilavledare
US7436283B2 (en) * 2003-11-20 2008-10-14 Cooper Technologies Company Mechanical reinforcement structure for fuses
US8117739B2 (en) * 2004-01-23 2012-02-21 Cooper Technologies Company Manufacturing process for surge arrester module using pre-impregnated composite
US7075406B2 (en) * 2004-03-16 2006-07-11 Cooper Technologies Company Station class surge arrester
US7633737B2 (en) * 2004-04-29 2009-12-15 Cooper Technologies Company Liquid immersed surge arrester
DE102008005678B4 (de) 2007-02-01 2021-12-09 Abb Power Grids Switzerland Ag Überspannungsableiter
US7660093B2 (en) 2007-11-20 2010-02-09 Hubbell Incorporated Arrester block module assembly and method
WO2011095590A1 (fr) * 2010-02-05 2011-08-11 Abb Technology Ag Limiteur de surtension
EP2953141B1 (fr) 2014-06-04 2016-09-28 ABB Schweiz AG Module de limiteur de surtension et limiteur de surtension
JP6454511B2 (ja) * 2014-10-09 2019-01-16 株式会社フジクラ 避雷器
EP3023998B1 (fr) * 2014-11-21 2018-05-02 ABB Schweiz AG Limiteur de surtension multi-terminal
CN109038461B (zh) * 2018-08-14 2020-03-06 芜湖市凯鑫避雷器有限责任公司 一种避雷器稳定安装座
US11894166B2 (en) 2022-01-05 2024-02-06 Richards Mfg. Co., A New Jersey Limited Partnership Manufacturing process for surge arrestor module using compaction bladder system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8527548D0 (en) * 1985-11-08 1985-12-11 Raychem Gmbh Electrical equipment
SE456623B (sv) * 1987-02-23 1988-10-17 Asea Ab Ventilavledare
AU595433B2 (en) * 1987-03-06 1990-03-29 Societe Anonyme Dite Ceraver A method of manufacturing a lightning arrester, and a lightning arrester obtained by the method
JPS63312602A (ja) * 1987-06-16 1988-12-21 Ngk Insulators Ltd 避雷器ユニット
FR2619244B1 (fr) * 1987-08-06 1992-09-04 Sediver Ste Europ Isolateurs V Procede de fabrication d'un parafoudre et parafoudre obtenu par ce procede
FR2641423B1 (fr) * 1988-12-30 1991-05-24 Ferraz Dispositif parafoudre pour la protection des lignes electriques
US4930039A (en) * 1989-04-18 1990-05-29 Cooper Industries, Inc. Fail-safe surge arrester
FR2659169B1 (fr) * 1990-03-02 1992-06-19 Ferraz Dispositif parafoudre pour la protection des lignes electriques.
SE466176B (sv) * 1990-05-08 1992-01-07 Asea Brown Boveri Ventilavledare med ett isolatorhoelje i vilket dragstaenger aer anordnade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007010857A1 (de) * 2007-03-01 2008-09-04 Siemens Ag Überspannungsableiter mit einer Varistoranordnung und Varistormodul zur Verwendung in einem Überspannungsableiter

Also Published As

Publication number Publication date
ATE122496T1 (de) 1995-05-15
CA2081442A1 (fr) 1993-06-05
US5291366A (en) 1994-03-01
CA2081442C (fr) 2001-12-11
PL171837B1 (en) 1997-06-30
DE59202147D1 (de) 1995-06-14
HU215656B (hu) 1999-02-01
ES2074319T3 (es) 1995-09-01
EP0545038A1 (fr) 1993-06-09
HU9203825D0 (en) 1993-03-29
CH682858A5 (de) 1993-11-30
AU655083B2 (en) 1994-12-01
CZ280827B6 (cs) 1996-04-17
AU2811692A (en) 1993-06-10
CZ355592A3 (en) 1993-06-16
HUT63013A (en) 1993-06-28
PL296750A1 (en) 1993-06-14

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