EP0642141A1 - Parafoudre - Google Patents

Parafoudre Download PDF

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Publication number
EP0642141A1
EP0642141A1 EP94112705A EP94112705A EP0642141A1 EP 0642141 A1 EP0642141 A1 EP 0642141A1 EP 94112705 A EP94112705 A EP 94112705A EP 94112705 A EP94112705 A EP 94112705A EP 0642141 A1 EP0642141 A1 EP 0642141A1
Authority
EP
European Patent Office
Prior art keywords
frame
surge arrester
arrester according
block
connection 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.)
Granted
Application number
EP94112705A
Other languages
German (de)
English (en)
Other versions
EP0642141B1 (fr
Inventor
Walter Schmidt
Christoph Schüpbach
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 Management 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 Management AG filed Critical ABB Management AG
Priority to SI9430058T priority Critical patent/SI0642141T1/xx
Publication of EP0642141A1 publication Critical patent/EP0642141A1/fr
Application granted granted Critical
Publication of EP0642141B1 publication Critical patent/EP0642141B1/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 axially slightly resilient plastic strips. The plastic strips are positively guided in the fittings.
  • the surge arrester has cylindrical varistor elements which are layered into a stack. A spacer plate is provided between the stack and the respective connection fitting, which is pressed against the stack by means of a threaded bolt screwed into the fitting. The fittings limit the stack of varistor elements. Grooved washers are located between the varistor elements and between the varistor elements and the electrically conductive spacer plates provided to improve contact.
  • the arrangement described is encapsulated with insulating material.
  • the invention solves the problem of creating a surge arrester which can be produced from parts which are simple and inexpensive to produce with comparatively few steps.
  • the surge arrester has at least two connection fittings held by a frame, with at least one block of varistor material clamped between the connection fittings.
  • the frame, the at least one block and partially the connection fittings are cast with an insulating plastic material to form a monolithic body.
  • the frame is made in one piece and is made of an insulating material. Means are also provided which maintain the contact force between the connection fittings and the at least one block of varistor material.
  • Either at least one electrically conductive, resilient element, for example a wave washer, or an axially resilient frame is provided as the means which maintains the contact force between the connection fittings and the at least one block of varistor material. This ensures that there is sufficient contact force throughout the life of the surge arrester.
  • the insulating material of the frame is fiber-reinforced, in particular glass-fiber reinforced, so that the frame can withstand high mechanical loads.
  • a particularly highly resilient frame results if tangled fibers are used for the fiber reinforcement of the frame.
  • 10 to 80 percent by weight of fibers are introduced.
  • glass fibers When using glass fibers as reinforcement, a proportion of 30 to 50 percent by weight of glass fibers has proven to be favorable.
  • the frame can be produced particularly inexpensively if it is injection molded or pressed from polymer material or cast from epoxy resin.
  • the frame can optionally also be wound from at least one fiber-reinforced strand soaked in epoxy resin.
  • the connection fittings are advantageously designed as threaded pins. It has proven to be particularly advantageous to rigidly connect one of the grub screws to the frame.
  • the grooved washers ensure that a large number of contact points are formed for a perfect current transfer.
  • these soft grooved washers advantageously compensate for any unevenness in the block surface, so that these unevenness cannot reduce the current carrying capacity. It proves to be particularly advantageous that the grooved washers also simultaneously the current transition zones of the surge arrester against the Seal the penetration of insulating material during the casting process to apply the jacket.
  • FIG. 1 and 2 show a schematic illustration of a longitudinal section through an overvoltage arrester according to the invention, the overvoltage arrester according to FIG. 2 being rotated by 90 ° about its longitudinal axis in relation to that of FIG. 1.
  • the surge arrester has a closed, one-piece frame 1 made of an insulating material which can spring somewhat in the axial direction. If the frame 1 does not spring or does not spring sufficiently, at least one resilient, electrically conductive element, for example a wave washer 1a, is provided.
  • the frame 1 has an elliptical or cylindrical end piece 2 at its ends facing the two connection sides of the surge arrester.
  • the two end pieces 2 are held together here by two integrally formed and symmetrically opposite connecting parts 3.
  • An axially extended threaded pin 4 is screwed into each of the elliptical or cylindrical end pieces 2.
  • the set screws 4 serve as connection fittings for the electrical connections of the surge arrester.
  • metallic threaded inserts 5 are inserted into the end pieces 2, which guide the threaded pins 4 in a threaded bore, but a number of other possibilities are known for how permanently stable threads can be introduced into plastic parts.
  • the threads can also be cut directly into the plastic of the frame 1.
  • a shoulder 6 is formed on each end of the end pieces 2.
  • a cylindrically shaped recess 7 is made, in which a metallic pressure plate 8 is guided with play.
  • the set screw 4 acts directly on this pressure plate 8 when the frame 1 has resilient connecting parts 3. If the connecting parts 3 do not spring or do not spring sufficiently, then electrically conductive, resilient elements are introduced between the pressure plate 8 and the threaded pin 4.
  • the use of wave washers 1a has proven to be particularly favorable here. These wave washers 1a can only be installed on one side of the surge arrester or, if greater forces are required, on both sides of the surge arrester. Disc springs or coiled springs can also be used as resilient elements.
  • Blocks 9 made of varistor material, such as ZnO, are clamped between the two pressure plates 8.
  • the blocks 9 are generally cylindrical. Between the pressure plates 8 and the next block 9, a cylindrically shaped grooved disk 10 is inserted, which has a central bore, and a grooved disk 10 is also always inserted between adjacent blocks 9.
  • the set screws 4 act, possibly via the wave washers 1a, on the pressure plates 8.
  • a sealing washer 11 is pushed onto each of the set screws 4, the cross section of which is adapted to the end piece 2 and here is elliptical or cylindrical is trained.
  • the sealing disc 11 is preferably made of a weather-resistant aluminum alloy, such as AlMg3.
  • the sealing disc 11 can also be made of stainless steel, brass or bronze.
  • the sealing disk 11 is pressed against the end face of the frame 1 by means of a nut 12 screwed onto the respective threaded pin 4.
  • the sealing washer 11 is intended to seal the finished surge arrester against environmental influences. Together with the paragraph 6, the sealing disk 11 forms a groove which is filled with electrically insulating plastic when cast around.
  • the assembly thus preassembled is placed in a mold and cast without a gap or voids up to the sealing disk 11 with a jacket 13 made of electrically insulating plastic.
  • a suitable plastic here is, for example, silicone rubber.
  • insulating shields 14 are molded onto the jacket 13 at the same time.
  • the set screws 4, which are required for the electrical connections of the surge arrester, remain shiny metallic.
  • the frame 1 of the surge arrester is preferably produced from a glass fiber reinforced polyamide 6.6 in an injection molding process, the glass fiber content being in a range from 30 to 50 percent by weight.
  • a particularly stable frame 1 is obtained if the glass fibers are introduced as tangled fibers.
  • the polyamide 610, the polyamide 11 and also the polyamide 12 can also be used for the production of the frame 1.
  • recycling products based on the polyamides mentioned in particular if there are no major demands on the resistance to breakage of the surge arresters.
  • the frame 1 can also be machined from a corresponding solid material. It is also possible to frame 1 with the help of a resin-soaked To wrap glass fiber thread or ribbon.
  • the frame 1 is normally manufactured in the size adapted to the respective size of the surge arrester, so that no additional adjustment work on the frame 1 is necessary. In small series, however, it may prove necessary for economic reasons to adapt the frame 1 to different sizes of the surge arrester. For this purpose, it is possible to separate the connecting parts 3 and to lengthen them with appropriate intermediate pieces. However, these intermediate pieces must be inserted absolutely firmly.
  • the section AA is entered in FIG. 3 to 6 show the section AA, as it could look in different possible embodiments of the invention.
  • 3 shows, for example, an elliptical jacket 13 which surrounds the blocks 9.
  • the cross sections of the connecting parts 3 are adapted to the shape of the jacket 13.
  • 4 shows a cylindrical jacket 13 which surrounds the blocks 9.
  • the cross sections of the connecting parts 3 are adapted to the shape of the jacket 13.
  • 5 shows an essentially rectangular jacket 13 which surrounds the blocks 9.
  • the cross sections of the connecting parts 3 are adapted to the shape of the jacket 13. 6 shows an arrangement which has not yet been provided with a jacket.
  • the connecting parts 3 are arranged asymmetrically, but in such a way that the frame 1 has an opening 15 on one side, which allows the mounting of the blocks 9.
  • This frame 1 is provided with a cylindrical jacket 13, which is why the cross sections of the connecting parts 3 are adapted to the shape of the jacket 13.
  • Such a frame 1 is particularly torsion-resistant and is used for surge arresters
  • the pulley 10 has a central bore. A multitude of grooves concentrically surround this hole.
  • the grooved disc is made of soft annealed aluminum.
  • the outermost edge of the outermost grooves serves as a sealing edge against plastic that penetrates during potting.
  • a large number of groove shapes is conceivable, but a sufficient sealing edge must always be formed on the outside, and it must also be ensured that a sufficient number of contact points for the electrical contact can be formed when the groove disks 10 are installed.
  • This grub screw 4 has a shaped piece 16 which is rigidly connected to it, for example a nut glued to it, the hexagon of which prevents the grub screw 4 from rotating in the frame 1. In this case, the contact force is generated solely by the opposite threaded pin 4.
  • the contact force which is applied to the arrangement by the threaded pins 4 ensures that the edges of the grooved disks 10 deform locally, which results in defined point contacts which allow a particularly good current transfer in the surge arrester.
  • 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 disks 10 enable this large number of point contacts. In this way it is ensured that the comparatively very high current flowing when the surge arrester responds is always safely dissipated through the active part of the surge arrester without the occasional overloading of current transitions and the associated braising that causes defects.
  • the operational safety of the arrester is significantly increased in this way.
  • the monolithic body to which the finished surge arrester is designed has a high mechanical stability, in particular also with regard to resistance to breakage, and it is also insensitive to decomposing 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)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP94112705A 1993-09-06 1994-08-13 Parafoudre Expired - Lifetime EP0642141B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9430058T SI0642141T1 (en) 1993-09-06 1994-08-13 Surge arrester

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2640/93 1993-09-06
CH264093 1993-09-06

Publications (2)

Publication Number Publication Date
EP0642141A1 true EP0642141A1 (fr) 1995-03-08
EP0642141B1 EP0642141B1 (fr) 1997-03-05

Family

ID=4238310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112705A Expired - Lifetime EP0642141B1 (fr) 1993-09-06 1994-08-13 Parafoudre

Country Status (17)

Country Link
US (1) US5602710A (fr)
EP (1) EP0642141B1 (fr)
JP (1) JPH07169552A (fr)
CN (1) CN1043697C (fr)
AT (1) ATE149731T1 (fr)
AU (1) AU669303B2 (fr)
BR (1) BR9403437A (fr)
CA (1) CA2130303A1 (fr)
CZ (1) CZ284101B6 (fr)
DE (1) DE59401902D1 (fr)
ES (1) ES2101406T3 (fr)
FI (1) FI944066A (fr)
HU (1) HU217760B (fr)
PL (1) PL174268B1 (fr)
RU (1) RU2121724C1 (fr)
SI (1) SI0642141T1 (fr)
ZA (1) ZA946399B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650579A1 (de) * 1996-12-06 1998-06-10 Asea Brown Boveri Überspannungsableiter
US5959822A (en) * 1995-12-22 1999-09-28 Hubbell Incorporated Compact lightning arrester assembly
WO2001033581A2 (fr) * 1999-11-02 2001-05-10 Cooper Industries, Inc. Module limiteur de surtension comprenant une pile de composants relies
US7075406B2 (en) 2004-03-16 2006-07-11 Cooper Technologies Company Station class surge arrester
US7436283B2 (en) 2003-11-20 2008-10-14 Cooper Technologies Company Mechanical reinforcement structure for fuses
US7633737B2 (en) 2004-04-29 2009-12-15 Cooper Technologies Company Liquid immersed surge arrester
WO2011095590A1 (fr) 2010-02-05 2011-08-11 Abb Technology Ag Limiteur de surtension
US8085520B2 (en) 2004-01-23 2011-12-27 Cooper Technologies Company Manufacturing process for surge arrester module using pre-impregnated composite
EP2991084A1 (fr) * 2014-08-26 2016-03-02 Siemens Aktiengesellschaft Paratonnerre
EP3023998A1 (fr) 2014-11-21 2016-05-25 ABB Technology AG Limiteur de surtension multi-terminal
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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726118B1 (fr) * 1994-10-19 1996-12-06 Girard Francois Dispositif parafoudre
US5930102A (en) 1997-10-08 1999-07-27 Joslyn Manufacturing Co. Surge arrester having single surge arresting block
DE19926950A1 (de) * 1999-06-14 2000-12-21 Abb Research Ltd Kabelendgarnitur
JP4342078B2 (ja) * 2000-04-07 2009-10-14 株式会社東芝 避雷器
US6279811B1 (en) 2000-05-12 2001-08-28 Mcgraw-Edison Company Solder application technique
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
WO2003037479A1 (fr) * 2001-10-13 2003-05-08 Professional Dental Manufacturing, Inc. Appareil destine au filtrage de l'eau
EP1304786A1 (fr) * 2001-10-18 2003-04-23 ABB Schweiz AG Limiteur de tension
KR100460434B1 (ko) * 2002-11-07 2004-12-08 정용기 쌍극자 피뢰침
US7660093B2 (en) 2007-11-20 2010-02-09 Hubbell Incorporated Arrester block module assembly and method
DE102007057265A1 (de) * 2007-11-26 2009-05-28 Siemens Ag Isolatoranordnung
CN102648501A (zh) * 2009-12-04 2012-08-22 Abb研究有限公司 高压电涌避雷器
MX2011008109A (es) * 2011-08-01 2012-02-23 Mappec Materiales Productos Polimericos Y Elementos De Construccion S A De C V Dispositivo protector de sobretensión con mecanismo para liberar presión.
CN103151126B (zh) * 2013-03-12 2015-09-30 郑越 用于220v或380v交流电力系统的过压保护器
WO2015067297A1 (fr) 2013-11-05 2015-05-14 Abb Technology Ltd Parasurtenseur à ailettes moulées et appareil de moulage
EP2998970B1 (fr) * 2014-09-22 2017-08-02 Siemens Aktiengesellschaft Limiteur du surtension
JP6454511B2 (ja) * 2014-10-09 2019-01-16 株式会社フジクラ 避雷器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280189A1 (fr) * 1987-02-23 1988-08-31 Asea Brown Boveri Ab Limiteur de surtension
EP0545038A1 (fr) * 1991-12-04 1993-06-09 Asea Brown Boveri Ag Parafoudre

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5043838A (en) * 1989-03-31 1991-08-27 Hubbell Incorporated Modular electrical assemblies with pressure relief
US4930039A (en) * 1989-04-18 1990-05-29 Cooper Industries, Inc. Fail-safe surge arrester

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280189A1 (fr) * 1987-02-23 1988-08-31 Asea Brown Boveri Ab Limiteur de surtension
EP0545038A1 (fr) * 1991-12-04 1993-06-09 Asea Brown Boveri Ag Parafoudre

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959822A (en) * 1995-12-22 1999-09-28 Hubbell Incorporated Compact lightning arrester assembly
DE19650579A1 (de) * 1996-12-06 1998-06-10 Asea Brown Boveri Überspannungsableiter
US5896266A (en) * 1996-12-06 1999-04-20 Asea Brown Boveri Ag Overvoltage suppressor having insulating housing
WO2001033581A2 (fr) * 1999-11-02 2001-05-10 Cooper Industries, Inc. Module limiteur de surtension comprenant une pile de composants relies
WO2001033581A3 (fr) * 1999-11-02 2001-10-04 Cooper Ind Inc Module limiteur de surtension comprenant une pile de composants relies
US6519129B1 (en) 1999-11-02 2003-02-11 Cooper Industries, Inc. Surge arrester module with bonded component stack
US6847514B2 (en) 1999-11-02 2005-01-25 Cooper Industries, Inc. Surge arrester module with bonded component stack
US7436283B2 (en) 2003-11-20 2008-10-14 Cooper Technologies Company Mechanical reinforcement structure for fuses
US8085520B2 (en) 2004-01-23 2011-12-27 Cooper Technologies Company Manufacturing process for surge arrester module using pre-impregnated composite
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
WO2011095590A1 (fr) 2010-02-05 2011-08-11 Abb Technology Ag Limiteur de surtension
US8593775B2 (en) 2010-02-05 2013-11-26 Abb Technology Ag Surge arrester
EP2991084A1 (fr) * 2014-08-26 2016-03-02 Siemens Aktiengesellschaft Paratonnerre
EP3023998A1 (fr) 2014-11-21 2016-05-25 ABB Technology AG Limiteur de surtension multi-terminal
US9824800B2 (en) 2014-11-21 2017-11-21 Abb Schweiz Ag Multi-terminal surge arrester
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

Also Published As

Publication number Publication date
FI944066A (fi) 1995-03-07
DE59401902D1 (de) 1997-04-10
CN1043697C (zh) 1999-06-16
BR9403437A (pt) 1995-05-09
HU217760B (hu) 2000-04-28
ZA946399B (en) 1995-03-28
SI0642141T1 (en) 1997-10-31
AU7144394A (en) 1995-03-16
JPH07169552A (ja) 1995-07-04
ATE149731T1 (de) 1997-03-15
US5602710A (en) 1997-02-11
CZ284101B6 (cs) 1998-08-12
CZ210494A3 (en) 1995-03-15
EP0642141B1 (fr) 1997-03-05
CN1102904A (zh) 1995-05-24
FI944066A0 (fi) 1994-09-05
RU94031899A (ru) 1996-08-20
HUT71074A (en) 1995-11-28
HU9402559D0 (en) 1994-10-28
PL174268B1 (pl) 1998-07-31
PL304882A1 (en) 1995-03-20
CA2130303A1 (fr) 1995-03-07
ES2101406T3 (es) 1997-07-01
RU2121724C1 (ru) 1998-11-10
AU669303B2 (en) 1996-05-30

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