EP1117107B1 - Überspannungsableiter - Google Patents

Überspannungsableiter Download PDF

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Publication number
EP1117107B1
EP1117107B1 EP00811193A EP00811193A EP1117107B1 EP 1117107 B1 EP1117107 B1 EP 1117107B1 EP 00811193 A EP00811193 A EP 00811193A EP 00811193 A EP00811193 A EP 00811193A EP 1117107 B1 EP1117107 B1 EP 1117107B1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
arrester according
contact
housing
elements
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
EP00811193A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1117107A2 (de
EP1117107A3 (de
Inventor
Bernhard Richter
Stephan Hoffarth
Michael Hagemeister
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
Publication of EP1117107A2 publication Critical patent/EP1117107A2/de
Publication of EP1117107A3 publication Critical patent/EP1117107A3/de
Application granted granted Critical
Publication of EP1117107B1 publication Critical patent/EP1117107B1/de
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 patent claim 1.
  • the invention relates to a surge arrester, as described in US-A-5,113,306.
  • This surge arrester has a housing, are guided through the wall of two power connections for a housed in the housing arrester unit.
  • the arrester unit contains an insulating sleeve, at the upper end of which is attached an electrode electrically conductively connected to a first of the two electrical connections.
  • the lower end of the sleeve is held on a Isolierstoffjoch, on which the lower end of a compression spring is supported.
  • the upper end of this spring is supported on an electrode electrically connected to the second power connector.
  • a plurality of cylindrical varistor blocks are arranged between the two electrodes arranged in the form of a column.
  • US-A-4,899,248 describes a surge arrester having a plurality of non-linear current-voltage behavior modules held in the form of a column in a housing.
  • Each module has a plurality of varistor blocks, which are electrically conductively connected via current transfer elements arranged therebetween and at the end and two spring washers fitted on the end with two current terminals of the module.
  • the contact pressure is formed by a wound around part of the power connections and the varistors, the power transmission elements and the washers of fiberglass reinforced plastic.
  • cylindrical varistor blocks arranged in the manner of a column are held together at the ends by means of two rigid pressure plates and end electrodes and are compressed longitudinally by means of glass fiber rods.
  • a pivot means arranged at the foot of the column it is achieved that large bending forces transmit only a small bending moment to the varistors.
  • a surge arrester for low-voltage systems described in DE 19545505 C1 is a varistor with a thermal shutdown of a fuse strip and a thermal release with eutectic fusible alloy in thermally conductive connection, which causes the separation of the thermal release in an inadmissible heating of the varistor and triggers a damage indicator by spring force.
  • the shock-current resistant fuse strip is arranged with predetermined breaking points within a fuse box and melts in a triggering case, where he suspends the attachment of the damage indicator within the fuse box.
  • the thermal trip located outside the fuse box consists of a detector wire that holds the damage indicator in the "no display" position and is split when the fuse strip melts or melts due to the short circuit current. This surge arrester is relatively expensive to produce.
  • the invention solves the problem of specifying a surge arrester of the type mentioned, which can be easily and inexpensively manufactured and yet characterized by excellent operating characteristics.
  • the varistor contains an unmetallized active part and two elastic contact elements which are pressed onto the end faces of the active part and form electrical contact, which are preferably made of graphite.
  • the active part is not passivated at the edge.
  • a great long-term stability of the surge arrester is achieved when the active part of the varistor is passivated on the edge, as can be realized by an applied on the Varistorrand electrical insulation made of glass or epoxy paint or by a pulled over the Varistorrand rubber or silicone ring. If the passivation has a ring and if this ring is higher than the active part and / or the ring has a pronounced profile, it can at the same time be used to position the elastically designed contact elements.
  • the surge arrester according to the invention comprises a circuit breaker realized by a fusion connection and a damage display device which is biased when the circuit breaker is open and the circuit breaker is open, it is recommended that the fusion connection be pressed into one of the two elastic contact elements of the varistor To mold disk-shaped element of the circuit breaker, since then a good heat transfer from the varistor to the fuse link and thus a safe triggering of the circuit breaker are ensured.
  • an extremely cost-effective production of a surge arrester according to the invention can be achieved if the arrester housing is formed predominantly axially symmetrical and has two frictionally interconnected to form the contact pressure and the bias housing parts, of which in a first opening for carrying out the first power connection and a Signal surface containing part of the damage display device and in a second an opening for the implementation of the second power connector are formed.
  • this arrester In the manufacture of this arrester are only prefabricated parts, such as a connection fitting or this connection fitting, a damage indicator and a biased circuit breaker containing component, one of the elastic contact element, the active part, another of the elastic contact elements, optionally connected to this contact element power transmission element and a Contact force generating compression spring inserted into a predominantly tubular housing part formed and fixed the inserted parts to form contact force by snapping a second terminal fitting containing cap-shaped housing part.
  • a connection fitting or this connection fitting a damage indicator and a biased circuit breaker containing component
  • one of the elastic contact element, the active part another of the elastic contact elements, optionally connected to this contact element power transmission element and a Contact force generating compression spring inserted into a predominantly tubular housing part formed and fixed the inserted parts to form contact force by snapping a second terminal fitting containing cap-shaped housing part.
  • the surge arrester designed in this way can therefore be manufactured very quickly and with very simple means, in particular locally.
  • Fig. 1 shows a cross section through a surge arrester with a two-piece predominantly axially symmetrical designed discharge housing made of plastic, such as preferably a stabilized against photooxidation, mechanically reinforced polyamide.
  • a favorable reinforcement can be achieved by incorporating filler, preferably in the form of glass beads.
  • a predominantly tubular executed housing part 2 an inner recess 18 is formed for engagement of a Schnapparretiervorraum 1a designed as an insulating housing part 1, which on the one hand firmly connected to a metallic power connector 16 and the other via a designed as O - ring sealing ring 9 to the housing part 2 watertight is.
  • a predominantly disc-shaped power transmission element 7 is connected via a metallic, electrical current conductive compression spring 4 to the power connector contact 16 in electrically conductive pressure connection.
  • the compression spring 4 exerts on the power transmission element 7 a predetermined force of z. B. 200 N; she is short-circuiting her induction externally bridged by flexible short-circuit elements 4a made of tinned copper.
  • a designed as an inner annular shoulder abutment 19 in the housing part 2 allows a marginal contact with a predominantly disc-shaped power transmission element 8 of a circuit breaker, which via a central, punctiform or circular cylindrical fusible link 15, preferably a silver solder, with a predetermined melting temperature in a temperature range of typically 140 ° C - 300 ° C, for example, of 180 ° C, with a designed as a threaded pin 8a, current-conducting part of the circuit breaker is firmly connected.
  • the pin 8a is screwed into a threaded hole 17a of a power connector 17 and thus electrically connected thereto.
  • a fixed, one-piece, electrically conductive contact may be provided (not shown).
  • This damage display device is in the operating state of the surge arrester on the one hand at the edge with a flange on the power transmission element 8 of the circuit breaker on; On the other hand, it rests watertight on an end part of the housing part 2 and on the power connection contact 17 via a sealing ring 10 embodied as a 0-ring.
  • This compression spring is supported on the one hand on the damage display device 3 and on the other hand on part 8 of the circuit breaker.
  • the current transmission element 7 is connected via a grooved surface and via a preferably designed as a graphite disc elastic contact element 13 with an end face 12a of a disk-shaped active part 12 of a varistor in electrically gut mandatder pressure connection.
  • the current transmission element 8 is connected via a grooved surface and via a likewise designed as a graphite disc elastic contact element 13 with an end face 12b of the active part 12 in electrically gut mandatder pressure connection.
  • the grooved contact abutment surfaces of the current transfer elements 7, 8 cause a uniform force transmission to the elastic contact elements 11, 13 and a good heat transfer from the active part 12 to the power transmission element 8 of the circuit breaker.
  • the transfer element 7 is firmly connected in the center of its ribbed surface by means of a drop 14 of a superglue with the elastic contact element 11.
  • the active part 12 preferably of a metal oxide, in particular based on zinc oxide, is not metallised on its end faces 12a, 12b. On the edge, it is coated or covered with a dielectric passivating agent, such as an electrical insulation made of glass or epoxy lacquer or a ring 6, preferably of a dielectric elastomer, in particular silicone.
  • a dielectric passivating agent such as an electrical insulation made of glass or epoxy lacquer or a ring 6, preferably of a dielectric elastomer, in particular silicone.
  • the ring 6 is slightly higher than the active part 12 of the varistor, so that it simultaneously forms a centering means for the elastic contact elements 11, 13 and the active part 12.
  • the surge arrester In normal operation, the surge arrester is high-impedance. At dangerous overvoltages, caused z. B. by atmospheric discharges or by switching operations, the electrical resistance of the varistor decreases with increasing voltage and limits these. If the temperature of the varistor rises due to overload and the melting temperature of the fusible link 15 is reached, the fusion opens. The compression spring 5 now pushes the damage display device 3 together with the power connector 17 in the direction of an arrow 21 to the right until the edge flange of the damage indicator 3, which previously applied to the part 8 of the circuit breaker rests against a contact surface or on an abutment 20 of the housing part 2.
  • the surge arrester can be installed in any position in an electrical system to be protected, wherein at least one of the two power connection contacts 16, 17 must be flexibly connected.
  • Fig. 2 shows the current transfer element 8 of the circuit breaker with a ring around its center arranged fuse 15a instead of a punctiform formed 15 as shown in FIG. 1.
  • the equipped with this fuse circuit breaker has the advantage of a more precise adjustment of power separation, since the melting region 15a not directly with connected to the acting as a heat dissipating screw 8a.
  • the surge arrester can also be equipped with a plurality of varistors 12 (not shown). Their end faces 12a, 12b may instead of plane-parallel, for example, convex or concave (not shown).
  • the elastic contact element 11, 13 and the non-metalized end faces 12a, 12b each allow their good electrical contact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP00811193A 2000-01-10 2000-12-14 Überspannungsableiter Expired - Lifetime EP1117107B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10000617A DE10000617A1 (de) 2000-01-10 2000-01-10 Ueberspannungsableiter
DE10000617 2000-01-10

Publications (3)

Publication Number Publication Date
EP1117107A2 EP1117107A2 (de) 2001-07-18
EP1117107A3 EP1117107A3 (de) 2004-12-22
EP1117107B1 true EP1117107B1 (de) 2007-01-24

Family

ID=7627045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00811193A Expired - Lifetime EP1117107B1 (de) 2000-01-10 2000-12-14 Überspannungsableiter

Country Status (16)

Country Link
US (1) US6614640B2 (zh)
EP (1) EP1117107B1 (zh)
JP (1) JP2005038869A (zh)
CN (1) CN1218329C (zh)
AT (1) ATE352848T1 (zh)
BR (1) BR0100035A (zh)
CA (1) CA2332384A1 (zh)
CZ (1) CZ200145A3 (zh)
DE (2) DE10000617A1 (zh)
ES (1) ES2280191T3 (zh)
HR (1) HRPK20010016B1 (zh)
HU (1) HUP0100061A3 (zh)
PL (1) PL199074B1 (zh)
RU (1) RU2260220C2 (zh)
TW (1) TW498352B (zh)
UA (1) UA71916C2 (zh)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10136617C1 (de) * 2001-07-17 2002-10-10 Siemens Ag Überspannungsableiter zum Einsatz in Energieübertragungsnetzen
EP1304786A1 (de) * 2001-10-18 2003-04-23 ABB Schweiz AG Spannungsbegrenzer
DE10162916A1 (de) * 2001-12-20 2003-07-10 Epcos Ag Federbügel, Überspannungsableiter mit dem Federbügel und Anordnung eines Überspannungsableiters
DE20380358U1 (de) * 2003-12-15 2006-10-12 Soule Protection Surtensions Einrichtung zum Bereitstellen von Schutz vor elektrischen Überspannungen mit Klemmen
DE102004025912A1 (de) * 2004-05-27 2005-12-22 Epcos Ag Überspannungsableiter
DE102006034404B4 (de) * 2006-06-08 2014-05-28 Dehn + Söhne Gmbh + Co. Kg Überstromschutzeinrichtung für den Einsatz mit Überspannungsschutzgeräten, mit einem zusätzlichen als Schlagbolzen ausgeführten mechanischen Auslöser
DE102010007428A1 (de) * 2010-02-09 2011-08-11 Phoenix Contact GmbH & Co. KG, 32825 Überspannungsschutzelement
DE102011100437B4 (de) * 2010-10-29 2016-04-07 Dehn + Söhne Gmbh + Co. Kg Anordnung zur Ausbildung einer thermischen Trennstelle
CN102082427A (zh) * 2010-12-21 2011-06-01 上海雷迅防雷技术有限公司 一种压敏芯片串石墨片的电涌保护器
DE102012004678A1 (de) * 2012-03-12 2013-09-12 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät
EP2669903B1 (de) * 2012-05-30 2018-09-12 Siemens Aktiengesellschaft Gekapselter überspannungsableiter mit zentraldurchführung
US8743525B2 (en) 2012-06-19 2014-06-03 Raycap Intellectual Property, Ltd Overvoltage protection devices including wafer of varistor material
US9906017B2 (en) 2014-06-03 2018-02-27 Ripd Research And Ip Development Ltd. Modular overvoltage protection units
CN104265556B (zh) * 2014-09-15 2016-08-17 浙江师范大学 一种基于介电弹性体的潮汐能发电机结构设计
EP3182438B1 (en) * 2015-12-18 2018-10-03 ABB Schweiz AG Subsea pressure resistant housing for an electric component
US10319545B2 (en) 2016-11-30 2019-06-11 Iskra Za{hacek over (s)}{hacek over (c)}ite d.o.o. Surge protective device modules and DIN rail device systems including same
US10447026B2 (en) 2016-12-23 2019-10-15 Ripd Ip Development Ltd Devices for active overvoltage protection
US10707678B2 (en) 2016-12-23 2020-07-07 Ripd Research And Ip Development Ltd. Overvoltage protection device including multiple varistor wafers
US10340110B2 (en) 2017-05-12 2019-07-02 Raycap IP Development Ltd Surge protective device modules including integral thermal disconnect mechanisms and methods including same
DE102017118181B4 (de) * 2017-07-07 2019-01-17 Dehn + Söhne Gmbh + Co. Kg Gekapselte Überspannungsschutzvorrichtung mit einem becherartigen Gehäuse
US10685767B2 (en) 2017-09-14 2020-06-16 Raycap IP Development Ltd Surge protective device modules and systems including same
US11223200B2 (en) 2018-07-26 2022-01-11 Ripd Ip Development Ltd Surge protective devices, circuits, modules and systems including same
US11862967B2 (en) 2021-09-13 2024-01-02 Raycap, S.A. Surge protective device assembly modules
US11723145B2 (en) 2021-09-20 2023-08-08 Raycap IP Development Ltd PCB-mountable surge protective device modules and SPD circuit systems and methods including same
US11990745B2 (en) 2022-01-12 2024-05-21 Raycap IP Development Ltd Methods and systems for remote monitoring of surge protective devices

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JP3815026B2 (ja) * 1998-02-26 2006-08-30 三菱電機株式会社 限流器

Also Published As

Publication number Publication date
HRPK20010016B1 (en) 2003-08-31
CZ200145A3 (cs) 2002-02-13
ES2280191T3 (es) 2007-09-16
EP1117107A2 (de) 2001-07-18
RU2260220C2 (ru) 2005-09-10
DE50014002D1 (de) 2007-03-15
CN1218329C (zh) 2005-09-07
US6614640B2 (en) 2003-09-02
CN1304142A (zh) 2001-07-18
CA2332384A1 (en) 2001-07-10
TW498352B (en) 2002-08-11
DE10000617A1 (de) 2001-07-12
HRP20010016A2 (en) 2001-12-31
HUP0100061A2 (hu) 2001-10-28
BR0100035A (pt) 2001-08-21
PL344976A1 (en) 2001-07-16
US20010019471A1 (en) 2001-09-06
HU0100061D0 (en) 2001-03-28
JP2005038869A (ja) 2005-02-10
HUP0100061A3 (en) 2002-10-28
EP1117107A3 (de) 2004-12-22
PL199074B1 (pl) 2008-08-29
ATE352848T1 (de) 2007-02-15
UA71916C2 (en) 2005-01-17

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