EP0312729A1 - Heat-sensitive protection device for a surge arrester incorporated in surge protector assemblies for telephone lines - Google Patents
Heat-sensitive protection device for a surge arrester incorporated in surge protector assemblies for telephone linesInfo
- Publication number
- EP0312729A1 EP0312729A1 EP88113259A EP88113259A EP0312729A1 EP 0312729 A1 EP0312729 A1 EP 0312729A1 EP 88113259 A EP88113259 A EP 88113259A EP 88113259 A EP88113259 A EP 88113259A EP 0312729 A1 EP0312729 A1 EP 0312729A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surge arrester
- surge
- protection device
- chamber
- spring
- 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
Links
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
- 230000001012 protector Effects 0.000 title 1
- 238000005192 partition Methods 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract 2
- 239000004033 plastic Substances 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
Definitions
- the invention relates to a thermal protection device according to the preamble of claim 1.
- a thermal protection device of this type is previously known from DE 27 38 078 A1.
- the melting element is designed as a sleeve surrounding the overvoltage conductor, which is pierced by the spring arms of the bow spring in the event of an overvoltage.
- the disadvantage here is that the melting element forms an additional component, which must also be adapted precisely to the shape of the surge arrester. Furthermore, leakage currents can flow between the spring arms of the bow spring and the contacts of the surge arrester.
- a non-generic thermal protection device wherein which of the surge arrester is not inserted into a chamber of a housing body.
- cup-shaped melting elements are arranged here for receiving compression springs, which connect two yoke-like contact plates to one another.
- the base parts of the cup-shaped melting elements melt, as a result of which the springs connect the yoke-like contact plates to one another.
- the disadvantage here is that the cup-shaped melting elements form additional components.
- the invention is therefore based on the object of providing a thermal protection device of the generic type in which only as few and simple components as possible are required and leakage currents between the bow spring and the contacts of the surge arrester are avoided.
- the Schelzelement is formed from a partition between the two chambers for receiving the surge arrester and the bow spring made of thermoplastic material, which forms a simple and, above all, easy to replace component. Due to the arrangement of the bow spring in the separate chamber, there is also sufficient electrical separation between the bow spring and the contacts of the surge arrester, so that no leakage currents can occur. The surge arrester can also be used again after a surge.
- the one-piece design of the partition wall with the housing body creates a possibility of inserting or removing the surge arrester in the surge arrester magazine independently of the bow spring. This significantly reduces the loading time of the surge arrester magazines.
- the surge arrester magazine 11 consists of a housing body 13 made of thermoplastic material and a metallic earth rail 12.
- one or more chambers 14, which are open at the top, are provided for receiving surge arresters 6, which are preferably arranged next to one another in a row.
- the chambers 14 are assigned chambers 9 for receiving bow springs 3.
- the inner contour of the chamber 14 is adapted to the cylindrical surge arrester 6, which has contacts 7, 8 on both end faces.
- the cylindrical chamber 14 is closed at the bottom by the earth rail 12 extending over the entire bottom surface of the housing body 13, so that the contact 7 of the surge arrester 6 inserted into the chamber 14 is electrically connected to the earth rail 12.
- a contact spring 15 connected to a telecommunication cable bears against the other contact 8 of the surge arrester 6 on the upper side 16 of the housing body 13. The contact spring 15 resiliently presses the surge arrester 6 against the earth rail 12, which is thus held clamped in the chamber 14.
- a further rectangular, upwardly open chamber 9 is provided, which, in contrast to chamber 14, is closed on the bottom and thus has no connection to earth rail 12. Both chambers 9, 14 are separated from one another by a thin partition 1 made of a thermoplastic plastic of the housing body 13.
- a U-shaped bow spring 3 with two spring arms 4, 5 is inserted into the chamber 9, which is open at the top, in such a way that the spring arms 4, 5 point in the direction of the partition wall 2.
- the ends of the spring arms 4, 5 are now assigned to the contacts 7, 8 of the surge arrester 6 and are only separated from one another by the partition 2.
- the bow spring 3 is slightly biased so that the two spring arms 4, 5 of the bow spring 3 are pressed at right angles against the partition 1.
- the overcurrent flows via the contact spring 15 to the contact 8 of the surge arrester 6.
- the contact spring 15 There is a gas spark gap between the one contact 8 and the other contact 7 of the surge arrester, so that an arc arises between the contacts 7, 8 of the surge arrester 6. Since the contact 7 rests directly on the earth rail 12, the resulting overcurrent is dissipated to earth.
- a further chamber 9 with the U-shaped bow spring 3 is provided next to each chamber 14 receiving a surge arrester 6. Due to the heating of the surge arrester 6 at high temperatures, the dividing wall 1 delimiting the two chambers 9, 14 becomes plastic, so that the spring arms 4,5 of the bow spring 3 pressing against the dividing wall 1 under a spring force penetrate the dividing wall 1. An electrical connection between the bow spring 3 and the surge arrester 6 is thus established since the spring arm 4 meets the contact 8 and the spring arm 5 of the bow spring 3 meets the contact 7 of the surge arrester 6. The arc formed in the gas spark gap of the surge arrester 6 is thus short-circuited by the bow spring 3, as a result of which the overcurrent can flow off directly to the earth potential.
- the partition 1 has a minimum thickness of approximately 0.3 mm.
- the partition is designed as an individual part which can be inserted between the two chambers 9, 14.
Landscapes
- Fuses (AREA)
- Emergency Protection Circuit Devices (AREA)
- Thermistors And Varistors (AREA)
- Protection Of Static Devices (AREA)
Abstract
Die Erfindung bezieht sich auf eine Thermoschutzvorrichtung für in Überspannungsableitermagazine 11 der Fernmeldetechnik eingebaute Überspannungsableiter 6, wobei dem in eine Kammer 14 des Gehäusekörpers 13 eingesetzten Überspannungsableiter 6 eine Bügelfeder 3 und ein Schmelzelement 2 zugeordnet sind, das im Überspannungsfall zum Kurzschließen der beiden Kontakte 7,8 des Überspannungsableiters 6 von mindestens einem Federarm 4,5 der Bügelfeder 3 durchstoßen wird. Um die Thermoschutzvorrichtung mit möglichst einfachen Bauteilen auszubilden und Kriechströme zwischen der Bügelfeder 3 und den Kontakten 7,8 des Überspannungsableiters 6 zu vermeiden, ist vorgesehen, daß der Kammer 14 für den Überspannungsableiter 6 eine im Gehäusekörper 13 ausgebildete separate Kammer 9 zur Aufnahme der Bügelfeder 3 zugeordnet ist und daß zwischen den beiden Kammern 9,14 eine Trennwand 1 aus thermoplastischem Kunststoff als Schmelzelement 2 angeordnet ist.The invention relates to a thermal protection device for surge arresters 6 installed in surge arrester magazines 11 of telecommunications technology, with the surge arrester 6 used in a chamber 14 of the housing body 13 being assigned a bow spring 3 and a fusible element 2 which, in the event of an overvoltage, short-circuit the two contacts 7, 8 of the surge arrester 6 is pierced by at least one spring arm 4, 5 of the bow spring 3. In order to design the thermal protection device with the simplest possible components and to avoid leakage currents between the bow spring 3 and the contacts 7, 8 of the surge arrester 6, it is provided that the chamber 14 for the surge arrester 6 has a separate chamber 9 formed in the housing body 13 for receiving the bow spring 3 is assigned and that between the two chambers 9, 14 a partition 1 made of thermoplastic is arranged as a melting element 2.
Description
Die Erfindung bezieht sich auf eine Thermoschutzvorrichtung gemäß dem Oberbegriff des Anspruches 1.The invention relates to a thermal protection device according to the preamble of claim 1.
Eine Thermoschutzvorrichtung dieser Art ist aus der DE 27 38 078 A1 vorbekannt. Hierbei ist das Schmelzelement als eine den Überspannungsleiter umgebende Hülse ausgebildet, die im Überspannungsfall von den Federarmen der Bügelfeder durchstoßen wird. Nachteilig hierbei ist, daß das Schmelzelement ein zusätzliches Bauteil bildet, das außerdem an die Form des Überspannungsableiters genau angepaßt werden muß. Ferner können Kriechströme zwischen den Federarmen der Bügelfeder und den Kontakten des Überspannungsableiters fließen.A thermal protection device of this type is previously known from DE 27 38 078 A1. Here, the melting element is designed as a sleeve surrounding the overvoltage conductor, which is pierced by the spring arms of the bow spring in the event of an overvoltage. The disadvantage here is that the melting element forms an additional component, which must also be adapted precisely to the shape of the surge arrester. Furthermore, leakage currents can flow between the spring arms of the bow spring and the contacts of the surge arrester.
Es ist ferner aus der EP 0.040.522 A1 eine gattungsfremde Thermoschutzvorrichtung bekannt, wobei welcher der Überspannungsableiter nicht in eine Kammer eines Gehäusekörpers eingesetzt ist. Statt dessen sind hier napfförmige Schmelzelemente zur Aufnahme von Druckfedern angeordnet, welche zwei jochartige Kontaktplatten miteinander verbinden. Im Überspannungsfall schmelzen die Bodenteile der napfförmigen Schmelzelemente, wodurch die Federn die jochartigen Kontaktplatten miteinander verbinden. Nachteilig hierbei ist, daß die napfförmigen Schmelzelemente zusätzliche Bauteile bilden.From EP 0.040.522 A1, a non-generic thermal protection device is also known, wherein which of the surge arrester is not inserted into a chamber of a housing body. Instead, cup-shaped melting elements are arranged here for receiving compression springs, which connect two yoke-like contact plates to one another. In the event of an overvoltage, the base parts of the cup-shaped melting elements melt, as a result of which the springs connect the yoke-like contact plates to one another. The disadvantage here is that the cup-shaped melting elements form additional components.
Es ist ferner aus dem Prospekt "Surge Arresters" der The M-O Valve Company Ltd. eine Thermoschutzvorrichtung für Überspannungsableiter bekannt, die mit einem festverbundenen Federstab versehen sind, der durch eine Kunststoffummantelung auf Abstand zum Überspannungsableiter gehalten ist. Im Überspannungsfall schmilzt die Kunststoffummantelung, wodurch der Federstab über die Kontakte der Überspannungsableiter kurzschließt. Nachteilig ist, daß der Federstab ein fest mit dem Überspannungsableiter verbundenes Sonderbauteil bildet und daß der Überspannungsableiter nach dem Wegschmelzen der Kunststoffummantelung nicht mehr verwendbar ist.It is also from the "Surge Arresters" prospectus of The M-O Valve Company Ltd. a thermal protection device for surge arresters are known, which are provided with a fixed spring rod which is held at a distance from the surge arrester by a plastic sheath. In the event of an overvoltage, the plastic coating melts, causing the spring rod to short-circuit via the contacts of the surge arrester. It is disadvantageous that the spring rod forms a special component firmly connected to the surge arrester and that the surge arrester can no longer be used after the plastic sheathing has melted away.
Der Erfindung liegt von daher die Aufgabe zugrunde, eine Thermoschutzvorrichtung der gattungsgemäßen Art zu schaffen, bei der nur möglichst wenige und einfache Bauteile erforderlich und Kriechströme zwischen der Bügelfeder und den Kontakten des Überspannungsableiters vermieden sind.The invention is therefore based on the object of providing a thermal protection device of the generic type in which only as few and simple components as possible are required and leakage currents between the bow spring and the contacts of the surge arrester are avoided.
Die Lösung dieser Aufgabe ergibt sich aus den kennzeichnenden Merkmalen des Anspruches 1. Erfindungsgemäß wird das Schelzelement aus einer zwischen den beiden Kammern zur Aufnahme des Überspannungsableiters und der Bügelfeder angeordneten Trennwand aus thermoplastischem Kunststoff gebildet, welche ein einfaches und vor allem einfach zu ersetzendes Bauteil bildet. Durch die Anordnung der Bügelfeder in der separaten Kammer besteht darüberhinaus zwischen der Bügelfeder und den Kontakten des Überspannungsableiters eine ausreichende elektrische Trennung, sodaß keine Kriechströme entstehen können. Auch ist der Überspannungsableiter nach einem Überspannungsfall wieder verwendbar.The solution to this problem results from the characterizing features of claim 1. According to the invention, the Schelzelement is formed from a partition between the two chambers for receiving the surge arrester and the bow spring made of thermoplastic material, which forms a simple and, above all, easy to replace component. Due to the arrangement of the bow spring in the separate chamber, there is also sufficient electrical separation between the bow spring and the contacts of the surge arrester, so that no leakage currents can occur. The surge arrester can also be used again after a surge.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. So wird durch die einteilige Ausbildung der Trennwand mit dem Gehäusekörper eine Möglichkeit geschaffen, den Überspannungsableiter unabhängig von der Bügelfeder in das Überspannungsableitermagazin einzusetzen bzw. aus diesem herauszunehmen. Hierdurch wird die Bestückungszeit der Überspannungsableitermagazine wesentlich verringert.Further advantageous embodiments of the invention result from the subclaims. The one-piece design of the partition wall with the housing body creates a possibility of inserting or removing the surge arrester in the surge arrester magazine independently of the bow spring. This significantly reduces the loading time of the surge arrester magazines.
Die Erfindung ist nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles einer Thermoschutzvorrichtung näher erläutert. Es zeigen:
- Fig. 1 Eine perspektivische Darstellung des Überspannungsableitermagazines mit Thermoschutzvorrichtung und
- Fig. 2 eine Schnittdarstellung gemäß der Linie I-I in Fig. 1
- Fig. 1 is a perspective view of the surge arrester magazine with thermal protection device and
- FIG. 2 is a sectional view along line II in FIG. 1
Das Überspannungsableitermagazin 11 besteht aus einem Gehäusekörper 13 aus thermoplastischem Kunststoff und einer metallischen Erdschiene 12. Im Gehäusekörper 13 sind eine oder mehrere, nach oben offene Kammern 14 zur Aufnahme von Überspannungsableitern 6 vorgesehen, die vorzugsweise nebeneinander in einer Reihe angeordnet sind. Den Kammern 14 sind Kammern 9 zur Aufnahme von Bügelfedern 3 zugeordnet. Wie in den Figuren 1 und 2 dargestellt, ist die innere Kontur der Kammer 14 dem zylinderförmigen Überspannungsableiter 6 angepaßt, der auf beiden Stirnseiten Kontakte 7,8 besitzt.The
Die zylinderförmige Kammer 14 ist bodenseitig durch die sich über die ganze Bodenfläche des Gehäusekörpers 13 erstreckende Erdschiene 12 verschlossen, so daß der Kontakt 7 des in die Kammer 14 eingesetzten Überspannungsableiters 6 mit der Erdschiene 12 elektrisch verbunden ist. An der Oberseite 16 des Gehäusekörpers 13 liegt am anderen Kontakt 8 des Überspannungsableiters 6 eine mit einem Fernmeldekabel verbundene Kontaktfeder 15 an. Die Kontaktfeder 15 drückt federnd den Überspannungsableiter 6 gegen die Erdschiene 12, der somit in der Kammer 14 klemmend gehalten ist.The
Neben jeder Kammer 14 ist eine weitere, rechteckförmige, nach oben offene Kammer 9 vorgesehen, die im Gegensatz zur Kammer 14 bodenseitig verschlossen ist und somit keine Verbindung zur Erdschiene 12 besitzt. Beide Kammern 9,14 sind durch eine dünne Trennwand 1 aus einem thermoplastischen Kunststoff des Gehäusekörpers 13 voneinander getrennt.In addition to each
In die nach oben offene Kammer 9 ist eine U-förmig ausgebildete Bügelfeder 3 mit zwei Federarmen 4,5 eingesteckt, und zwar so, daß die Federarme 4,5 in Richtung Trennwand 2 zeigen. Die Enden der Federarme 4,5 sind jetzt den Kontakten 7,8 des Überspannungsableiters 6 zugeordnet und nur durch die Trennwand 2 voneinander getrennt. Die Bügelfeder 3 ist leicht vorgespannt, so daß die beiden Federarme 4,5 der Bügelfeder 3 rechtwinklig federnd gegen die Trennwand 1 gedrückt sind.A U-shaped
Beim Auftreten einer Überspannung fließt der Überstrom über die Kontaktfeder 15 zum Kontakt 8 des Überspannungsableiters 6. Zwischen dem einen Kontakt 8 und dem anderen Kontakt 7 des Überspannungsableiters besteht eine Gasfunkenstrecke, so daß zwischen den Kontakten 7,8 des Überspannungsableiters 6 ein Lichtbogen entsteht. Da der Kontakt 7 direkt an der Erdschiene 12 aufliegt, wird der entstandene Überstrom auf Erde abgeleitet.When an overvoltage occurs, the overcurrent flows via the
Fließt der Überstrom auf eine längere Zeit, so würde das Überspannungsableitermagazin 11 aufgrund der hohen Temperatur zerstört werden. Um diese Zerstörung zu verhindern, ist neben jeder, einen Überspannungsableiter 6 aufnehmenden Kammer 14 eine weitere Kammer 9 mit der U-förmigen Bügelfeder 3 vorgesehen. Durch die Erwärmung des Überspannungsableiters 6 bei hohen Temperaturen wird die die beiden Kammern 9,14 begrenzende Trennwand 1 plastisch, so daß die unter einer Federkraft gegen die Trennwand 1 andrückenden Federarme 4,5 der Bügelfeder 3 die Trennwand 1 durchstoßen. Eine elektrische Verbindung zwischen Bügelfeder 3 und dem Überspannungsableiter 6 ist somit hergestellt, da der Federarm 4 auf den Kontakt 8 und der Federarm 5 der Bügelfeder 3 auf den Kontakt 7 des Überspannungsableiters 6 treffen. Der in der Gasfunkenstrecke des Überspannungsableiters 6 gebildete Lichtbogen wird somit durch die Bügelfeder 3 kurzgeschlossen, wodurch der Überstrom direkt auf das Erdpotential abfließen kann. Die Trennwand 1 hat Mindestdicke von ca. 0,3 mm.If the overcurrent flows for a longer period of time, the
In einer nicht dargestellten Ausführungsform ist die Trennwand als zwischen die beiden Kammern 9,14 einlegbares Einzelteil ausgebildet.In an embodiment not shown, the partition is designed as an individual part which can be inserted between the two
Claims (3)
dadurch gekennzeichnet,
daß der Kammer (14) für den Überspannungsableiter (6) eine im Gehäusekörper (13) ausgebildete separate Kammer (9) zur Aufnahme der Bügelfeder (3) zugeordnet ist und daß zwischen den beiden Kammern (9,14) eine Trennwand (1) aus thermoplastischem Kunststoff als Schmelzelement (2) angeordnet ist.1.Thermal protection device for surge arresters installed in surge arrester magazines of telecommunications technology, the surge arrester used in a chamber of the housing body being assigned a bow spring and a fusible element which, in the event of a surge, is pierced by at least one spring arm of the bow spring to short-circuit the two contacts of the surge arrester,
characterized,
that the chamber (14) for the surge arrester (6) is assigned a separate chamber (9) formed in the housing body (13) for receiving the bow spring (3) and that a partition (1) is formed between the two chambers (9, 14) thermoplastic is arranged as a melting element (2).
dadurch gekennzeichnet,
daß die Trennwand (1) eine Wanddicke von ca. 0,3 mm aufweist.2. Thermal protection device according to claim 1,
characterized,
that the partition (1) has a wall thickness of about 0.3 mm.
dadurch gekennzeichnet
daß die Trennwand (1) einteilig mit dem Gehäusekörper (13) des Überspannungsableitermagazines (1) ausgebildet ist.3. Thermal protection device according to claim 1 or 2,
characterized
that the partition (1) is formed in one piece with the housing body (13) of the surge arrester magazine (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88113259T ATE69126T1 (en) | 1987-10-20 | 1988-08-13 | THERMAL PROTECTION DEVICE FOR OVERVOLTAGE ARRESTERS INCORPORATED IN OVERVOLTAGE ARRESTER MAGAZINES OF TELECOMMUNICATION TECHNOLOGY. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3735837 | 1987-10-20 | ||
DE3735837 | 1987-10-20 | ||
DE3820272 | 1988-06-10 | ||
DE3820272A DE3820272C1 (en) | 1987-10-20 | 1988-06-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0312729A1 true EP0312729A1 (en) | 1989-04-26 |
EP0312729B1 EP0312729B1 (en) | 1991-10-30 |
Family
ID=25861018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88113259A Expired - Lifetime EP0312729B1 (en) | 1987-10-20 | 1988-08-13 | Heat-sensitive protection device for a surge arrester incorporated in surge protector assemblies for telephone lines |
Country Status (17)
Country | Link |
---|---|
US (1) | US4887183A (en) |
EP (1) | EP0312729B1 (en) |
JP (1) | JPH01109626A (en) |
CN (1) | CN1012867B (en) |
AR (1) | AR241296A1 (en) |
AT (1) | ATE69126T1 (en) |
AU (1) | AU606223B2 (en) |
BR (1) | BR8805396A (en) |
CA (1) | CA1330826C (en) |
DE (2) | DE3820272C1 (en) |
ES (1) | ES2026980T3 (en) |
GR (1) | GR3003039T3 (en) |
HK (1) | HK84092A (en) |
IN (1) | IN169696B (en) |
MX (1) | MX164630B (en) |
RU (1) | RU2024136C1 (en) |
YU (1) | YU47295B (en) |
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FR2696581A1 (en) * | 1992-10-06 | 1994-04-08 | Mars Actel | Three-pole protection module with short-circuit fuse. |
DE19519785C1 (en) * | 1995-05-30 | 1996-08-29 | Quante Ag | Pluggable overvoltage protection device for telecommunications terminal board |
DE19622461A1 (en) * | 1996-05-24 | 1997-11-27 | Siemens Ag | Gas-filled surge arrester with external short-circuit device |
EP0845843A1 (en) * | 1996-11-29 | 1998-06-03 | Soule Materiel Electrique | Protection device for telephone lines |
WO1998037605A1 (en) * | 1997-02-21 | 1998-08-27 | Siemens Aktiengesellschaft | Gas-filled surge protector with external short-circuiting device |
EP3358577A1 (en) * | 2012-06-19 | 2018-08-08 | Raycap Intellectual Property, Ltd. | Overvoltage protection device including a varistor a fuse and two fail safe mechanisms |
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US6430019B1 (en) | 1998-06-08 | 2002-08-06 | Ferraz S.A. | Circuit protection device |
US6040971A (en) * | 1998-06-08 | 2000-03-21 | Martenson; Kenneth R. | Circuit protection device |
US6166894A (en) * | 1999-03-15 | 2000-12-26 | Lucent Technologies Inc. | PCB based protector cartridge |
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BRPI0614137A2 (en) * | 2005-08-05 | 2012-11-20 | Kiwa Spol S R O | state-of-the-art overvoltage protection |
DE102007051854B4 (en) * | 2006-11-09 | 2017-05-04 | Dehn + Söhne Gmbh + Co. Kg | Surge arrester with a housing and with at least one discharge element |
US7483252B2 (en) * | 2006-12-05 | 2009-01-27 | Ferraz Shawmut S.A. | Circuit protection device |
US8064182B2 (en) | 2007-02-28 | 2011-11-22 | Adc Telecommunications, Inc. | Overvoltage protection plug |
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US8411404B2 (en) * | 2008-05-27 | 2013-04-02 | Adc Telecommunications, Inc. | Overvoltage protection plug |
FR2958787B1 (en) * | 2010-04-09 | 2012-05-11 | Abb France | DEVICE FOR PROTECTION AGAINST OVERVOLTAGES WITH DEDUCTIVE THERMAL DISCONNECTORS |
FR2958789B1 (en) * | 2010-04-09 | 2012-05-11 | Abb France | DEVICE FOR PROTECTION AGAINST TRANSIENT OVERVOLTAGES WITH IMPROVED THERMAL DISCONNECTOR |
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US8477468B2 (en) | 2011-11-04 | 2013-07-02 | Mersen Usa Newburyport-Ma, Llc | Circuit protection device |
US8810988B2 (en) | 2011-11-04 | 2014-08-19 | Mersen Usa Newburyport-Ma, Llc | Circuit protection device |
CN103986140A (en) * | 2014-05-09 | 2014-08-13 | 广西南宁百兰斯科技开发有限公司 | Inserting piece type anti-thunder device |
US9520709B2 (en) | 2014-10-15 | 2016-12-13 | Schneider Electric USA, Inc. | Surge protection device having two part ceramic case for metal oxide varistor with isolated thermal cut off |
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DE2911109C3 (en) * | 1979-03-21 | 1982-03-04 | Siemens AG, 1000 Berlin und 8000 München | Surge arrester for several lines to be fused together |
US4233641A (en) * | 1979-04-06 | 1980-11-11 | Reliable Electric Company | Line protector for a communications circuit |
US4449156A (en) * | 1982-09-24 | 1984-05-15 | Porta Systems Corp. | Telephone central office gas tube replacement protector |
DE3410610A1 (en) * | 1984-03-22 | 1985-09-26 | Siemens AG, 1000 Berlin und 8000 München | Fuse element for lines used in electrical telecommunications technology |
GB2170352B (en) * | 1984-10-24 | 1988-05-25 | Dubilier Plc | Temperature responsive switch |
DE3604785A1 (en) * | 1986-02-13 | 1987-08-20 | Siemens Ag | METAL-ENCLOSED, GAS-INSULATED HIGH-VOLTAGE SYSTEM WITH AN OVERVOLTAGE ARRESTER |
-
1988
- 1988-06-10 DE DE3820272A patent/DE3820272C1/de not_active Expired
- 1988-08-13 AT AT88113259T patent/ATE69126T1/en not_active IP Right Cessation
- 1988-08-13 DE DE8888113259T patent/DE3865943D1/en not_active Expired - Fee Related
- 1988-08-13 EP EP88113259A patent/EP0312729B1/en not_active Expired - Lifetime
- 1988-08-13 ES ES198888113259T patent/ES2026980T3/en not_active Expired - Lifetime
- 1988-08-30 IN IN725/CAL/88A patent/IN169696B/en unknown
- 1988-09-06 JP JP63221493A patent/JPH01109626A/en active Granted
- 1988-09-21 CA CA000578079A patent/CA1330826C/en not_active Expired - Fee Related
- 1988-09-28 RU SU884356552A patent/RU2024136C1/en active
- 1988-10-13 US US07/257,388 patent/US4887183A/en not_active Expired - Fee Related
- 1988-10-17 AR AR88312217A patent/AR241296A1/en active
- 1988-10-19 BR BR8805396A patent/BR8805396A/en not_active IP Right Cessation
- 1988-10-19 YU YU195888A patent/YU47295B/en unknown
- 1988-10-19 MX MX13472A patent/MX164630B/en unknown
- 1988-10-20 CN CN88107348A patent/CN1012867B/en not_active Expired
- 1988-10-20 AU AU24097/88A patent/AU606223B2/en not_active Ceased
-
1991
- 1991-10-31 GR GR91401505T patent/GR3003039T3/en unknown
-
1992
- 1992-10-29 HK HK840/92A patent/HK84092A/en unknown
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DE2738078A1 (en) * | 1976-08-31 | 1978-03-09 | Tii Corp | FAULT-PROOF OVERVOLTAGE PROTECTION DEVICE |
EP0040522A1 (en) * | 1980-05-16 | 1981-11-25 | The M-O Valve Company Limited | Excess voltage arresters |
US4402031A (en) * | 1981-12-07 | 1983-08-30 | Porta Systems Corp. | Gas tube protector module |
EP0146207A2 (en) * | 1983-12-06 | 1985-06-26 | Dubilier Plc | Improvements in electrical components |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2696581A1 (en) * | 1992-10-06 | 1994-04-08 | Mars Actel | Three-pole protection module with short-circuit fuse. |
EP0592295A1 (en) * | 1992-10-06 | 1994-04-13 | Alcatel Cable Interface | Three-pole protection module with short-circuit fuse |
DE19519785C1 (en) * | 1995-05-30 | 1996-08-29 | Quante Ag | Pluggable overvoltage protection device for telecommunications terminal board |
EP0746071A1 (en) * | 1995-05-30 | 1996-12-04 | Quante Ag | Plug-in overvoltage protection device |
DE19622461A1 (en) * | 1996-05-24 | 1997-11-27 | Siemens Ag | Gas-filled surge arrester with external short-circuit device |
DE19622461B4 (en) * | 1996-05-24 | 2005-04-21 | Epcos Ag | Gas-filled surge arrester with external short-circuit device |
FR2756673A1 (en) * | 1996-11-29 | 1998-06-05 | Soule Materiel Electr | PROTECTION DEVICE FOR TELEPHONE LINES |
EP0845843A1 (en) * | 1996-11-29 | 1998-06-03 | Soule Materiel Electrique | Protection device for telephone lines |
WO1998037605A1 (en) * | 1997-02-21 | 1998-08-27 | Siemens Aktiengesellschaft | Gas-filled surge protector with external short-circuiting device |
DE19708651A1 (en) * | 1997-02-21 | 1998-09-03 | Siemens Ag | Gas-filled surge arrester with external short-circuit device |
US6445560B1 (en) | 1997-02-21 | 2002-09-03 | Epcos Ag | Gas-filled surge protector with external short-circuiting device |
EP3358577A1 (en) * | 2012-06-19 | 2018-08-08 | Raycap Intellectual Property, Ltd. | Overvoltage protection device including a varistor a fuse and two fail safe mechanisms |
EP3640958A1 (en) * | 2012-06-19 | 2020-04-22 | Raycap Ip Assets Ltd | Overvoltage protection devices including wafer of varistor material |
Also Published As
Publication number | Publication date |
---|---|
AU606223B2 (en) | 1991-01-31 |
CA1330826C (en) | 1994-07-19 |
YU47295B (en) | 1995-01-31 |
RU2024136C1 (en) | 1994-11-30 |
AU2409788A (en) | 1989-04-20 |
AR241296A1 (en) | 1992-04-30 |
CN1012867B (en) | 1991-06-12 |
GR3003039T3 (en) | 1993-02-17 |
EP0312729B1 (en) | 1991-10-30 |
DE3865943D1 (en) | 1991-12-05 |
ES2026980T3 (en) | 1992-05-16 |
HK84092A (en) | 1992-11-06 |
DE3820272C1 (en) | 1989-04-06 |
BR8805396A (en) | 1989-06-20 |
JPH01109626A (en) | 1989-04-26 |
ATE69126T1 (en) | 1991-11-15 |
CN1032716A (en) | 1989-05-03 |
IN169696B (en) | 1991-12-07 |
MX164630B (en) | 1992-09-10 |
JPH0576125B2 (en) | 1993-10-22 |
YU195888A (en) | 1991-06-30 |
US4887183A (en) | 1989-12-12 |
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