EP0810613B1 - Limiteur de surtension - Google Patents

Limiteur de surtension Download PDF

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Publication number
EP0810613B1
EP0810613B1 EP97810222A EP97810222A EP0810613B1 EP 0810613 B1 EP0810613 B1 EP 0810613B1 EP 97810222 A EP97810222 A EP 97810222A EP 97810222 A EP97810222 A EP 97810222A EP 0810613 B1 EP0810613 B1 EP 0810613B1
Authority
EP
European Patent Office
Prior art keywords
active part
loop
part according
axis
connecting fittings
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
EP97810222A
Other languages
German (de)
English (en)
Other versions
EP0810613A2 (fr
EP0810613A3 (fr
Inventor
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 Schweiz AG
Original Assignee
ABB Schweiz 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 ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to SI9730723T priority Critical patent/SI0810613T1/sl
Publication of EP0810613A2 publication Critical patent/EP0810613A2/fr
Publication of EP0810613A3 publication Critical patent/EP0810613A3/fr
Application granted granted Critical
Publication of EP0810613B1 publication Critical patent/EP0810613B1/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
    • 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 an active part for a surge arrester according to the preamble of claim 1.
  • the invention refers to a prior art, as it results from EP 0614 198 A2.
  • One in this state of the Technology described surge arrester contains several cylindrical resistance elements with varistor behavior, which column-shaped stacked between two power connection fittings are arranged.
  • One the varistors and the two connection fittings to form an axially acting Contact force cohesive clamping part has at least two with their ends resting on the connection fittings Loops up.
  • a cast housing made of a weatherproof Plastic surrounds the varistors, the loops and the most of the connection fittings.
  • the task is based, an active part of to create the aforementioned type, which despite simple construction due to good mechanical and electrical Characteristics distinguishes and which at the same time in particularly inexpensive manner can be produced.
  • the active part according to the invention faces the prior art the Advantage on that there is only a single loop for Fixing and clamping two connection fittings and at least one held between the valves varistor needed. Therefore, it can be special in particular be made economically.
  • To his assembly becomes just a pre-made and temporarily a axial guide ensuring template needed in the Connection fittings and the at least one varistor first stacked in the form of a column and then by attaching the Loop to form a bias to mechanical stable active part of the surge arrester connected become. Since in this case the axis of the column-shaped Active part, the loop ends substantially symmetrical penetrates, the loop creates a in the entire active part uniform contact force. When an overvoltage occurs is thus a uniform current density of one in the active part ensured discharge current and is therefore a Inadmissibly high local heating of contact transitions of the Active part avoided with great certainty.
  • connection fitting 1 is with a trained as a screw hole 11 fastening device for a not shown on high voltage potential provided with an executable electrical conductor.
  • connection fitting 2 is with a fastening screw 12 formed as a fastening device feasible at earth potential.
  • She has one axially aligned threaded hole 3, in which a pressure screw 4 is guided displaceably in the axial direction.
  • Numeral 5 denotes a loop of a wound, glass fiber reinforced and in a plastic matrix embedded band. The loop 5 is with both ends in slit-shaped sections of material recesses 6, 7 out, which in the connection fittings 1, 2 are formed.
  • connection fittings 1, 2 is to form a columnar Ableitergots a cylindrical varistor element 8 of non-linear resistance material, about the base of metal oxide, such as in particular ZnO arranged.
  • a columnar Ableitergots a cylindrical varistor element 8 of non-linear resistance material, about the base of metal oxide, such as in particular ZnO arranged.
  • metal oxide such as in particular ZnO arranged.
  • an element 8 and two or more columnar stacked varistor elements be provided.
  • connection fitting 1 In a molded into the connection fitting 1 disc-shaped Recess are electrically conductive parts, namely two contact pressure generating and each as a plate spring trained spring elements 9 and one preferably made Aluminum or copper or an aluminum or copper alloy existing thrust washer 10, in the axial direction slidably mounted (Fig.2).
  • a disc-shaped Recess of the connection fitting 2 In a disc-shaped Recess of the connection fitting 2 is one of the same Material as the part 10 existing thrust washer 13 also Slidably mounted in the axial direction (Fig.2).
  • current transfer elements 14 Between the pressure plate 10 and the varistor element 8 and between the Thrust washer 13 and the varistor element 8 are current transfer elements 14 arranged, which in each case as a disc with concentrically guided around the axis and in the two end faces the disc formed grooves are formed (Fig.3).
  • the current transfer elements 14 are advantageous with soft annealed aluminum formed.
  • each of the reference numerals 15, 16 marked slot-shaped sections in essentially transverse to the axis z of the outer surface of the Electric connection fitting 1 and 2 extends over the axis z is.
  • Each of the two ends of the loop 5 is above the axis z out into the slot-shaped section 15 or 16 introduced and lies in each case on a slit-shaped section 15 and 16 delimiting surface 17 and 18 ( Figure 3).
  • This ensures that the loop 5 in the area of Axis z is held centrally and a uniform contact pressure ensured in the arrester active part.
  • a uniform Current density of the occurrence of an overvoltage in the arrester active part Guided arrester current is guaranteed.
  • inadmissibly high levels of local warming occur Arrester active part avoided.
  • the support surfaces 17, 18 substantially circular arc-shaped surface profile.
  • the loop ends then lie with a uniform, relatively small Curvature on the connection fittings 1, 2 on. This will be undesirably large bending and shearing stresses of Loops largely avoided.
  • a rectangular, in particular a square, cross-sectional profile the loop 5 with a relative small width transverse to the axis z is particularly advantageous because then the slit-shaped section 15 or 16 only must be extended slightly over the axis z addition.
  • the connection fitting 1 or 2 then has a high mechanical Strength on.
  • connection fittings 1, 2 are partial, the varistor elements 8, the printing plates 10, 13 and the loop 5 are completely from a shielded cast housing 19 of insulating material, preferably of an elastomeric Silicone, enclosed (Fig.1).
  • connection fitting 2 To make the active part of the series after the connection fitting 2, the pressure plate 13, one of the Current transfer elements 14, the varistor element 8, another Stromübergangselement 14, the pressure plate 10, the two Spring elements 9 and the connection fitting 1 in a template stacked and with a biasing force applied.
  • the connection fittings 1, 2 are doing so aligned such that the two slot-shaped sections 15, 16 congruent superimposed ( Figures 2 and 3).
  • the biasing force is then canceled and the arrester active part is completed.
  • Twisting the pressure screw 4 can additionally contact and Holding force to be generated in the arrester active part.
  • a prefabricated loop can also be a loop used during the manufacture of the surge arrester is formed.
  • the two connection fittings 1, 2 under the formation of contact force firmly clamped together and thereby a mechanically stable active part of the produced Surge arrester formed.
  • a good mechanical Strength of the arrester active part extends this tension in the general already completely off.
  • fiberglass fabricated tape may therefore be used the spring elements 9 omitted.
  • such a band is a prepreg, in particular based on glass fibers and epoxy.
  • a prepreg points a good adhesion effect.
  • prepreg wound loop is also after winding stable without additional fastening device and can then Cured at elevated temperatures. This forms then one of glass fibers and one of the glass fibers embedding, hardened plastic matrix existing loop.
  • connection fittings 1, 2 By bracing the two connection fittings 1, 2 is in addition to a good contact of the individual in the current path between the two connection fittings located parts at the same time a nestling of the grooves of the current transfer elements 14 to the end faces of the varistor element 8 and the Pressure discs 10, 13 reached.
  • insulating material preferably on the base of an elastomeric silicone

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (11)

  1. Pièce active pour un limiteur de surtension avec deux armatures de connexion (1, 2) espacées l'une de l'autre le long d'un axe (z), au moins un élément à varistance (8) en forme de cylindre, disposé entre les deux armatures de connexion (1, 2) et une pièce de serrage tenant ensemble les armatures de connexion (1, 2) et ledit au moins un élément à varistance (8) avec formation d'une force de contact, avec une boucle (5) constituée d'une matière isolante, caractérisée en ce que, dans chacune des deux armatures de connexion (1, 2), un évidement de matière (6, 7) est respectivement moulé avec une section (15, 16) produite en forme de fente, se prolongeant essentiellement transversalement à l'axe (z), laquelle s'étend de la surface externe de l'armature (1, 2) jusqu'à dépasser l'axe (z), et en ce que la boucle (5) dans la zone des extrémités de boucle dépassant l'axe (z) est introduite dans les sections (15, 16) en forme de fente des deux armatures de connexion (1, 2) et s'appuie avec chacune des deux extrémités de boucle respectivement sur une surface (17, 18) délimitant la section (15, 16) en forme de fente.
  2. Pièce active selon la revendication 1, caractérisée en ce que la surface d'appui (17, 18) présente un profil de surface essentiellement en forme d'arc de cercle.
  3. Pièce active selon la revendication 1 ou 2, caractérisée en ce qu'un creux en forme de rondelle est formé dans au moins l'une des deux armatures de connexion (1, 2) pour recevoir au moins un élément élastique (9) et/ou une rondelle de pression (10, 13) produisant la force de contact.
  4. Pièce active selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la boucle (5) renferme une bande enroulée.
  5. Pièce active selon la revendication 4, caractérisée en ce que la bande enroulée est intégrée dans une matrice de matière plastique.
  6. Pièce active selon la revendication 5, caractérisée en ce que la matrice de matière plastique avant l'application de la boucle (5) sur les surfaces d'appui (17, 18) est formée par durcissement d'une matière plastique durcissable.
  7. Pièce active selon la revendication 5, caractérisée en ce que la matrice de matière plastique après l'application de la boucle (5) sur les surfaces d'appui (17, 18) est formée par durcissement d'une matière plastique durcissable.
  8. Pièce active selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la boucle (5) présente un profil de coupe transversale rectangulaire.
  9. Pièce active selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'au moins un élément (14) déformable laissant passer le courant lors de la formation de la force de contact est prévu dans le parcours du courant entre les deux armatures de connexion (1, 2).
  10. Pièce active selon la revendication 9, caractérisée en ce que l'élément (14) laissant passer le courant est produit sous forme de rondelle et réalisé de façon concentrique autour de l'axe (z) et présente des rainures moulées dans les surfaces frontales de la rondelle.
  11. Limiteur de surtension avec une pièce active selon l'une quelconque des revendications 1 à 10, et avec un boítier moulé (9) constitué d'une matière isolante, enveloppant les armatures de connexion (1, 2), ledit au moins un élément à varistance (8) et au moins partiellement la pièce de serrage.
EP97810222A 1996-06-01 1997-04-14 Limiteur de surtension Expired - Lifetime EP0810613B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730723T SI0810613T1 (sl) 1996-06-01 1997-04-14 Prenapetostni odvodnik

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19622140A DE19622140A1 (de) 1996-06-01 1996-06-01 Überspannungsableiter
DE19622140 1996-06-01

Publications (3)

Publication Number Publication Date
EP0810613A2 EP0810613A2 (fr) 1997-12-03
EP0810613A3 EP0810613A3 (fr) 1998-07-22
EP0810613B1 true EP0810613B1 (fr) 2005-10-26

Family

ID=7795952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810222A Expired - Lifetime EP0810613B1 (fr) 1996-06-01 1997-04-14 Limiteur de surtension

Country Status (17)

Country Link
US (1) US5942968A (fr)
EP (1) EP0810613B1 (fr)
JP (1) JP3951255B2 (fr)
KR (1) KR100453028B1 (fr)
CN (1) CN1100327C (fr)
AU (1) AU713453B2 (fr)
BR (1) BR9703423A (fr)
CA (1) CA2202967C (fr)
CZ (1) CZ293795B6 (fr)
DE (2) DE19622140A1 (fr)
ES (1) ES2252772T3 (fr)
HR (1) HRP970302B1 (fr)
HU (1) HU221226B1 (fr)
PL (1) PL183048B1 (fr)
RU (1) RU2172535C2 (fr)
SI (1) SI0810613T1 (fr)
ZA (1) ZA973633B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813135A1 (de) * 1998-03-25 1999-09-30 Asea Brown Boveri Überspannungsableiter
DE19942633A1 (de) 1999-09-07 2001-03-08 Abb Hochspannungstechnik Ag Überspannungsableiter
KR20010069475A (ko) * 2001-03-27 2001-07-25 서형권 피뢰기
JP4299244B2 (ja) * 2002-07-19 2009-07-22 エプコス アクチエンゲゼルシャフト 過電圧の防止のための保護素子及びその適用
ATE442654T1 (de) * 2003-02-12 2009-09-15 Abb Technology Ag Aktivteil für einen überspannungsableiter
EP1603140A1 (fr) * 2004-06-04 2005-12-07 ABB Technology AG Composant actif pour limiteur de surtension encapsulé
EP1603141B1 (fr) 2004-06-04 2016-08-24 ABB Schweiz AG Limiteur de surtensions avec isolation au gaz
DE602006007864D1 (de) * 2006-12-22 2009-08-27 Abb Technology Ltd Überspannungsableiter
KR100858966B1 (ko) * 2007-09-21 2008-09-17 삼현씨앤에스 주식회사 배리스터 장치
DE102011009124A1 (de) 2011-01-21 2012-07-26 Tridelta Überspannungsableiter Gmbh Überspannungsableiter mit Käfig-Design
RU2474901C1 (ru) * 2011-09-06 2013-02-10 Закрытое акционерное общество "Завод энергозащитных устройств" Способ изготовления оксидно-цинковых варисторов
EP2600358B1 (fr) * 2011-12-02 2014-04-30 ABB Technology AG Parafoudre
EP2953141B1 (fr) * 2014-06-04 2016-09-28 ABB Schweiz AG Module de limiteur de surtension et limiteur de surtension
EP3144942B1 (fr) * 2015-09-18 2018-02-21 Siemens Aktiengesellschaft Dispositif de protection contre les surtensions
JP6350611B2 (ja) 2016-08-10 2018-07-04 株式会社明電舎 避雷器
CN211830199U (zh) * 2020-01-22 2020-10-30 伊顿智能动力有限公司 隔爆型浪涌保护器
JP2022052786A (ja) * 2020-09-24 2022-04-05 株式会社明電舎 避雷器
CN113299445A (zh) * 2021-05-28 2021-08-24 固力发电气有限公司 一种高压复合支柱绝缘子

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447118A (en) * 1966-08-16 1969-05-27 Westinghouse Electric Corp Stacking module for flat packaged electrical devices
US3936785A (en) * 1974-04-01 1976-02-03 Cook Electric Company Gas tube arrester subassembly
US3987343A (en) * 1974-05-22 1976-10-19 Joslyn Mfg. And Supply Co. Surge protector
DE2861341D1 (en) * 1977-06-17 1982-01-28 Chisso Corp Production of dichlorosilane derivatives
US5138517A (en) * 1984-12-14 1992-08-11 Hubbell Incorporated Polymer housed electrical assemblies using modular construction
GB8527548D0 (en) * 1985-11-08 1985-12-11 Raychem Gmbh Electrical equipment
FR2646957B1 (fr) * 1989-05-12 1994-02-04 Sediver Ste Europ Isolateurs Ver Enveloppe etanche a base d'enroulement filamentaire, et parafoudre composite en faisant application
DE4306691A1 (de) * 1993-03-04 1994-11-03 Abb Management Ag Ueberspannungsableiter
SE516123C2 (sv) * 1994-05-13 2001-11-19 Abb Ab Ventilavledare, metod för framställning av en sådan samt användning
SE504075C2 (sv) * 1994-08-29 1996-11-04 Asea Brown Boveri Ventilavledare

Also Published As

Publication number Publication date
JPH1070013A (ja) 1998-03-10
HRP970302A2 (en) 1998-02-28
DE59712450D1 (de) 2005-12-01
CN1170939A (zh) 1998-01-21
AU713453B2 (en) 1999-12-02
ZA973633B (en) 1997-11-25
PL183048B1 (pl) 2002-05-31
PL320246A1 (en) 1997-12-08
CZ166497A3 (cs) 1998-12-16
BR9703423A (pt) 1998-09-08
CA2202967C (fr) 2005-03-29
CA2202967A1 (fr) 1997-12-01
DE19622140A1 (de) 1997-12-04
KR980005073A (ko) 1998-03-30
EP0810613A2 (fr) 1997-12-03
CZ293795B6 (cs) 2004-08-18
JP3951255B2 (ja) 2007-08-01
CN1100327C (zh) 2003-01-29
HRP970302B1 (en) 2004-10-31
HUP9700976A2 (hu) 1998-04-28
EP0810613A3 (fr) 1998-07-22
HUP9700976A3 (en) 2000-03-28
AU2466397A (en) 1997-12-11
HU221226B1 (en) 2002-08-28
KR100453028B1 (ko) 2004-12-17
US5942968A (en) 1999-08-24
HU9700976D0 (en) 1997-07-28
RU2172535C2 (ru) 2001-08-20
ES2252772T3 (es) 2006-05-16
SI0810613T1 (sl) 2006-04-30

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