EP0318339B1 - Funkenstrecken-Überspannungsableiter mit wenigstens einem Schmelzleiter - Google Patents

Funkenstrecken-Überspannungsableiter mit wenigstens einem Schmelzleiter Download PDF

Info

Publication number
EP0318339B1
EP0318339B1 EP88402577A EP88402577A EP0318339B1 EP 0318339 B1 EP0318339 B1 EP 0318339B1 EP 88402577 A EP88402577 A EP 88402577A EP 88402577 A EP88402577 A EP 88402577A EP 0318339 B1 EP0318339 B1 EP 0318339B1
Authority
EP
European Patent Office
Prior art keywords
casing
strip
electrode
fusible element
metal
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
EP88402577A
Other languages
English (en)
French (fr)
Other versions
EP0318339A1 (de
Inventor
Michel Dorival
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.)
CITEL SAS
Original Assignee
CITEL SAS
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 CITEL SAS filed Critical CITEL SAS
Publication of EP0318339A1 publication Critical patent/EP0318339A1/de
Application granted granted Critical
Publication of EP0318339B1 publication Critical patent/EP0318339B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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 relates to a lightning arrester device of the type which includes an external metal envelope delimiting an enclosure which contains a neutral gas, and at least one metal rod forming an electrode and penetrating inside the envelope, means for insulating seals being provided between the rod and the envelope to close the latter, and which comprise, in addition, at least one fusible element capable of establishing a short circuit between the electrode and the envelope when the quantity of energy that the surge arrester must pass exceeds a determined threshold.
  • lightning protection devices are intended to be installed on power supply lines of electronic assemblies, such as telephone exchanges, computer installations, etc., which must be protected against overvoltages liable to seriously damage them. These lightning protection devices are intended to derive such overvoltages which can be caused by external elements such as lightning falling on a supply line.
  • the amount of energy that the arrester must drain exceeds the normal possibilities of the device, so that overheating occurs which can lead to the destruction of the device and the ineffectiveness of the protection provided by a such device.
  • FR-A-2 574 589 shows a lightning arrester device of this type.
  • the fusible element is constituted by a washer mounted at the end of the outer metal casing. This washer is relatively exposed to atmospheric agents which may contain pollutants which may reduce the efficiency of the fuse element.
  • the mounting of said fusible element at the end of the metal casing leads to an increase in the size in the axial direction of the arrester device.
  • the main object of the invention is to provide a lightning arrester device of the kind defined above which meets better than hitherto the various requirements of practice and which, in particular, provides better protection of the fusible element or elements against atmospheric agents, under reduced overall dimensions in the axial direction. It is further desirable that the manufacture of such a surge arrester be as simple as possible.
  • a lightning arrester device of the kind defined above is characterized in that the metal casing comprises, in the vicinity of an end receiving an electrode, a housing on its outer wall, housing in which the fusible element is placed , and that a strip of insulating material surrounds said fusible element and the housing, this strip having holes and itself being surrounded by a conductive metal ring electrically connected to the electrode, the assembly being such that in the event of heating of the envelope, the fusible element melts and flows through at least one hole in the insulating strip to establish an electrical short-circuit contact between the envelope and the metal tank connected to the electrode .
  • the size in the axial direction of the arrester is not increased by the presence of at least one fusible element, and this fusible element is well protected against atmospheric agents which could reduce its efficiency.
  • the housing provided on the outer wall of the metal casing is constituted by a annular groove.
  • the fusible element is advantageously formed by a strip of fusible material wound in the annular groove.
  • the thickness of this strip is at most equal to the depth of the groove.
  • the strip of fusible material is advantageously obtained by flattening a wire of circular section usually used for welding electrical components.
  • This kind of fusible element wire comprises a stripping product housed inside micro-channels so as to be sheltered from atmospheric agents and polluting elements.
  • the conductive metal ring electrically connected to the electrode is preferably obtained by winding a metal strip which comprises, substantially at mid-length, a transverse extension intended to be folded at right angles to establish the electrical connection with the electrode; preferably, the metal strip has, at each of its ends, a longitudinal extension, these two extensions being joined together during the winding of the strip to form a pin.
  • said metal casing comprises in the vicinity from each of its ends, on its outer wall, a housing, in particular an annular groove, for receiving the fusible element, which is surrounded by a strip of insulating material, said strip had holes and being itself surrounded by a conductive metal ring electrically connected to the associated electrode, the assembly being such that in the event of the envelope heating, at least one fusible element melts and flows through at least one hole in the insulating strip corresponding to establish an electrical short-circuit contact between the envelope and the metal ring connected to the electrode.
  • the invention consists, apart from the arrangements set out above, of a certain number of other arrangements which will be more explicitly discussed below in connection with a particular embodiment described in detail with reference to the drawing below. annexed, but which is in no way limiting.
  • Figure 1 of this drawing is an elevational view, with cut parts and torn part of a three-pole type arrester device, according to the invention.
  • Figure 2 finally, is a developed view of a metal strip intended to form a ring with connection to an electrode.
  • a lightning arrester D for the protection of a circuit or an installation against an overvoltage.
  • This device comprises an outer metal casing 1 delimiting an enclosure 2 containing an inert gas under controlled pressure.
  • This gas can be argon and the pressure can be lower or higher than atmospheric pressure.
  • the casing 1 is constituted by a metallic cylinder of revolution.
  • the device D is of the three-pole type and provided, at each end of the envelope 1, with a metal rod 3a, 3b forming an electrode and penetrating inside the envelope 1.
  • the electrodes 3a, 3b are aligned and arranged coaxially in the envelope 1.
  • the ends of the electrodes located inside the envelope 1 are spaced from one another in the axial direction.
  • Insulating sealing means 4 are provided between each rod 3a and 3b and the casing 1 to close the corresponding end of the latter; these sealing means 4 may include a glass bead or equivalent means.
  • the lightning arrester D further comprises less, a fusible element 5 for establishing a short circuit between an electrode and the casing 1 when the amount of energy which the arrester D must flow exceeds a pre-determined threshold.
  • the metal casing comprises, in the vicinity of each of its ends receiving an electrode, a housing L provided on its outer wall, housing in which the fuse element 5 is placed.
  • this housing L is formed by an annular groove 6 provided in the outer wall of the envelope 1 and located in the vicinity of each end.
  • This groove 6 is separated from said end by a cylinder shoulder 7 whose outside diameter is the same as that of the envelope 1.
  • the depth of the housing L is sufficient so that the fusible element 5 does not protrude relative to the outer surface of the envelope 1.
  • the depth of this housing is equal to the difference between the external radius of the envelope 1 and the radius of the bottom of the groove 6.
  • the fusible element 5 is advantageously formed by a strip 8 of fusible material wound in the annular groove 6.
  • the length of this strip 8 is chosen to be equal to the circumference of the bottom of the groove 6 and such that the wound strip 8 forms a cylindrical crown, entirely housed in the groove 6 and the ends of which come end to end.
  • This strip 8 is preferably obtained by flattening a wire of circular cross section usually used for soldering electrical components and consisting, for example, of a lead-tin eutectic alloy.
  • a welding wire contains pickling product located in micro-channels and isolated from the atmosphere. Consequently, the strip 8 obtained by flattening the wire also contains stripper housed in micro-channels; this stripper is thus sheltered from polluting atmospheric agents and retains all its effectiveness to intervene at the time of the fusion of the band 8.
  • Each fuse element 5 is surrounded by a strip 9 of insulating material, said strip comprising holes 10 ⁇ distributed along its entire length.
  • the strip 9 is advantageously made of polyimide material having a high insulating power.
  • the insulating strip 9 is wound around the fusible element 5 so as to form a sort of cylindrical crown.
  • the width h of this strip 9, which corresponds to the axial length of the crown formed from the wound strip, is greater than the width f of the groove 6 and the fusible element 5.
  • the strip 9 can completely cover the element 5 and the groove 6 and extend beyond the groove on either side of the latter to establish good insulation.
  • the insulating strip 9 is itself surrounded by a conductive metal ring 11, electrically connected to the electrode 3a, or 3b of the end considered.
  • Each metal ring 11 is advantageously obtained by winding a flat metal strip 12 (FIG. 2) which comprises, at mid-length, a transverse extension 13 intended to be folded substantially at right angles, radially inward, as shown in FIG. 1.
  • This extension 13 comprises, towards its end remote from the middle part of the strip 12, a hole 14 intended to be crossed by the associated electrode (see FIG. 1), a weld 15 being produced at the level of this hole between the electrode and the extension 13 to ensure good electrical continuity.
  • the extension 13 could comprise, in place of the hole 14, a tongue cut along two large sides orthogonal to the mean direction of the strip 12, adjoining along a small side to an area of the extension 13 and the other small side of which is in the alignment of the edge of the extension 13 away from the strip 12.
  • this tab would be folded substantially at a right angle outward to apply and be welded to the electrode 3 a .
  • the strip 12 At each of its longitudinal ends, the strip 12, as visible in FIG. 2, comprises, along its edge furthest from the part 13, two extensions 16, 17, of width less than that of the strip 12.
  • the two extensions 16, 17 When said strip 12 is wound in a cylindrical ring, the two extensions 16, 17 are placed in the diametrical plane of symmetry for the folded part 13 and are joined to each other so as to form a pin 18a, 18b respectively, electrically connected to the corresponding electrode 3a, 3b.
  • These pins 18a, 18b are intended to be plugged into a base (not shown), allowing the insertion of the device D in a line connected to an installation to be protected.
  • the metal casing 1 is connected to ground, as shown diagrammatically in FIG. 1.
  • the operation of the lightning arrester D is as follows.
  • the arrester D When the arrester D is subjected to an overvoltage and must ensure the flow of an amount of energy greater than a determined threshold, heating of the casing 1 occurs. This heating is transmitted to the fusible elements 5 provided at each end of the envelope. When one of these elements 5 reaches its melting temperature, it turns into a liquid and can flow through certain holes 10 ⁇ to establish an electrical connection between the casing 1 and the metal ring 11, therefore with the corresponding electrode.
  • the pickling product included in the fuse element 5 contributes to establishing good electrical contact and an effective weld during cooling.
  • a short circuit is thus established between the envelope 1 and at least one of the electrodes 3a, 3b, which makes it possible to derive the excess electrical energy to flow out.
  • the lightning arrester D is preferably arranged with its axis substantially horizontal as shown in FIG. 1, but it would be possible to mount it differently because the fusible element 5 is practically enclosed in a volume limited by the groove 6 and the insulating strip 11 and can flow in case of fusion, only through the holes 10 ⁇ to come into contact with the ring 11.
  • the device D according to the invention is of reduced bulk in the axial direction since the fusible elements 5 are located on the external face of the envelope 1.
  • Each fusible element 5 is well protected against the external atmosphere. The absorption of moisture from the air by this fusible element and the stripping product which it may contain is practically prevented, which reduces the risks of deterioration of the stripping product.
  • the short circuit established with a device D according to the invention is established under good conditions and effectively.
  • the embodiment described relates to a three-pole device. It is clear that the invention can also be applied to a bipolar device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)
  • Thermistors And Varistors (AREA)

Claims (8)

  1. Überspannungsschutz-Vorrichtung mit einem äußeren metallischen Mantel (1), der einen ein Inertgas enthaltenden Raum (2) begrenzt, und mit mindestens einem metallischen Stift (3a, 3b), der eine Elektrode bildet und in das Innere des Mantels eindringt, wobei isolierende Dichtmittel (4) zwischen dem Stift und dem Mantel zum verschließen des letzteren vorgesehen sind, und wobei die Vorrichtung zum anderen mindestens ein Schmelzelement (5) aufweist, das geeignet ist, einen Kurzschluß zwischen der Elektrode (3a, 3b) und dem Mantel (1) herzustellen, wenn die Energiemenge, die über die Überspannungsschutz-Vorrichtung abfließen soll, eine bestimmte Schwelle überschreitet,

    dadurch gekennzeichnet, daß

    der metallische Mantel (1) an seiner Außenwand benachbart zu einem, eine Elektrode (3a, 3b) aufnehmenden Ende einen Sitz (L) aufweist, in dem das Schmelzelement (5) angeordnet ist, und daß ein Streifen (9) aus isolierendem Material das Schmelzelement und den Sitz umgibt, wobei der streifen (9) Löcher (10) aufweist und seinerseits von einem metallischen stromleitenden Ring (11) umgeben ist, der elektrisch mit der Elektrode verbunden ist, wobei das Ganze so ausgebildet ist, daß im Fall einer Erwärmung des Mantels das Schmelzelement (5) zum Schmelzen kommt und durch mindestens ein Loch (10) des isolierenden Streifens fließt, um einen elektrischen Kurzschluß-Kontakt zwischen dem Mantel (1) und dem mit der Elektrode verbundenen metallischen Ring (11) herzustellen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der an der Außenwand des metallischen Mantels vorgesehene Sitz (L) durch eine ringförmige Vertiefung (6) gebildet wird.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Schmelzelement (5) durch einen Streifen (8) aus schmelzbarem Material gebildet wird, der in die ringförmige Vertiefung (6) eingerollt ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Dicke des Streifens (8) aus schmelzbarem Material höchstens gleich der Tiefe der Vertiefung (6) ist.
  5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Streifen (8) aus schmelzbarem Material durch Ab flachen eines Drahts mit kreisförmigem Querschnitt erhalten wird, der gewöhnlich zum Verlöten elektrischer Bauelemente verwendet wird, wobei der Draht ein im Inneren von Mikrokanälen befindliches Flußmittel aufweist.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet daß der metallische, stromleitende, elektrisch mit der Elektrode verbundene Ring (11) durch Einrollen eines metallischen Streifens (12) erhalten wird, der im wesentlichen an seiner halben Länge einen quergerichteten Fortsatz (13) aufweist, der dazu bestimmt ist, rechtwinklig umgebogen zu werden, um die elektrische Verbindung mit der Elektrode herzustellen.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der metallische Streifen (12) an jedem seiner Enden einen längsgerichteten Fortsatz (16, 17) aufweist, wobei die beiden Fortsätze beim Einrollen des Streifens (12) zusammengefügt werden, um einen Stift (18a, 18b) zu bilden.
  8. Überspannungsschutz-Vorrichtung in dreipoliger Ausführung nach einem der vorhergehenden Ansprüche, umfassend zwei Leitungselektroden (3a, 3b), und zwar eine Elektrode an jedem Ende des äußeren metallischen Mantel (1), wobei der letztere zur Verbindung mit der Masse bestimmt ist,
    dadurch gekennzeichnet, daß
    der metallische Mantel (1) an seiner Außenwand benachbart zu jedem seiner Enden einen Sitz (L), insbesondere eine ringförmige Vertiefung (6), zur Aufnahme des Schmelzelements (5) aufweist, wobei das Schmelzelement von einem Streifen (9) aus isolierendem Material umgeben ist, der Löcher (10) aufweist und seinerseits von einem metallischen stromleitenden Ring (11) umgeben ist, der elektrisch mit den zugehörigen Elektroden (3a, 3b) verbunden ist, wobei das Ganze so ausgebildet ist, daß im Fall einer Erwärmung des Mantels mindestens ein Schmelzelement (5) zum Schmelzen kommt und durch mindestens ein Loch (10) des entsprechenden isolierenden Streifens (9) fließt, um einen elektrischen Kurzschluß-Kontakt zwischen dem Mantel (1) und dem mit der Elektrode verbundenen metallischen Ring (11) herzustellen.
EP88402577A 1987-10-16 1988-10-12 Funkenstrecken-Überspannungsableiter mit wenigstens einem Schmelzleiter Expired - Lifetime EP0318339B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8714299A FR2622047B1 (fr) 1987-10-16 1987-10-16 Dispositif parafoudre comprenant au moins un element fusible
FR8714299 1987-10-16

Publications (2)

Publication Number Publication Date
EP0318339A1 EP0318339A1 (de) 1989-05-31
EP0318339B1 true EP0318339B1 (de) 1993-01-13

Family

ID=9355888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402577A Expired - Lifetime EP0318339B1 (de) 1987-10-16 1988-10-12 Funkenstrecken-Überspannungsableiter mit wenigstens einem Schmelzleiter

Country Status (5)

Country Link
US (1) US4866561A (de)
EP (1) EP0318339B1 (de)
DE (1) DE3877534D1 (de)
ES (1) ES2037261T3 (de)
FR (1) FR2622047B1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX172972B (es) * 1989-05-01 1994-01-26 Porta Systems Corp Dispositivo de autoajuste de fallas en el tubo de gas para modulos protectores de telefonos
US5187634A (en) * 1991-08-21 1993-02-16 Adc Telecommunications, Inc. Fail-safe protector
US5557250A (en) * 1991-10-11 1996-09-17 Raychem Corporation Telecommunications terminal block
CA2139327A1 (en) * 1992-06-30 1994-01-06 William J. Curry Surge arrestor fail safe thermal overload mechanism
US5423694A (en) * 1993-04-12 1995-06-13 Raychem Corporation Telecommunications terminal block
FR2704380B1 (fr) * 1993-04-23 1995-06-09 Pouyet Int Module de protection enfichable pour module d'interconnexion rapide de lignes telephoniques.
US5282109A (en) * 1993-05-27 1994-01-25 Tii Industries Back-up air gaps
US5418516A (en) * 1993-11-09 1995-05-23 Littlefuse, Inc. Surge resistor fuse
US5742223A (en) 1995-12-07 1998-04-21 Raychem Corporation Laminar non-linear device with magnetically aligned particles
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
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
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038046A (en) * 1960-05-18 1962-06-05 Mc Graw Edison Co Combined cutout and lightning arrester bracket assembly
US3522570A (en) * 1968-04-08 1970-08-04 Ajr Electronics Corp Fail-safe over-voltage protector
US4056840A (en) * 1976-05-12 1977-11-01 Reliable Electric Company Line protector for communications circuit
US4062054A (en) * 1976-08-31 1977-12-06 Tii Corporation Multi-function fail-safe arrangements for overvoltage gas tubes
FR2574589B1 (fr) * 1984-12-12 1989-06-02 Tubes Lampes Electriq Cie Indl Dispositif de mise en court-circuit exterieur de faible encombrement

Also Published As

Publication number Publication date
ES2037261T3 (es) 1993-06-16
DE3877534D1 (de) 1993-02-25
FR2622047A1 (fr) 1989-04-21
US4866561A (en) 1989-09-12
EP0318339A1 (de) 1989-05-31
FR2622047B1 (fr) 1990-03-02

Similar Documents

Publication Publication Date Title
EP0318339B1 (de) Funkenstrecken-Überspannungsableiter mit wenigstens einem Schmelzleiter
CA2384750C (fr) Dispositif de protection contre les surtensions
EP1826793B1 (de) Vorrichtung zum Schutz gegen Überspannungen mit Thermoschalter mit doppelter Kontaktfläche
FR2574589A1 (fr) Dispositif de mise en court-circuit exterieur de faible encombrement
EP3319194B1 (de) Schutzvorrichtung gegen vorübergehende überspannungen
FR2468201A1 (fr) Microparafoudre a fort pouvoir d'ecoulement
FR2820879A1 (fr) Montage d'element fusible pour gamme complete d'intensites et fusibles
EP0625284A1 (de) Flachsicherung für hohe nennströme
EP3712908B1 (de) Schutzvorrichtung gegen überspannungen
EP0621733A1 (de) Steckbarer Schutzmodul für Module für schnelle Verbindung von Fernsprechleitungen
CA2251240C (fr) Montage de parafoudre pour ligne electrique aerienne avec indicateur d'un defaut de fonctionnement du parafoudre
FR2725304A1 (fr) Fusible pour microplaquette
EP0027061B1 (de) Blitzableitervorrichtung, welche ein äusserliches Kurzschliessen erlaubt, und entsprechende Schutzeinheit
EP0782753B1 (de) Überspannungsableiter
FR2485286A1 (fr) Module de raccordement a coupure et protection pour circuit electrique unique ou multiple
EP0693758B1 (de) Kondensator mit Überdruckschutz
EP0219361B1 (de) Verkleinerte Vorrichtung zur Verbindung von elektrisch leitenden Elementen für sehr hohe Stromstärken
FR2670624A1 (fr) Court-circuit et boitier pour parafoudre.
EP1337018A1 (de) Gasisolierte Stromdurchführung
FR2577722A3 (fr) Module de protection de lignes multifilaires contre les surtensions
EP3942577B1 (de) Überspannungsschutz
FR2877154A1 (fr) Dispositif perfectionne de protection d'appareils electriques contre des surtensions
FR2758420A1 (fr) Dispositif de protection a base de varistance
FR2621184A1 (fr) Dispositif de protection contre les surtensions
EP1698029B1 (de) Überspannungsschutzvorrichtung mit klemmanordnung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES GB LI

17P Request for examination filed

Effective date: 19891127

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CITEL

17Q First examination report despatched

Effective date: 19920320

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES GB LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930113

REF Corresponds to:

Ref document number: 3877534

Country of ref document: DE

Date of ref document: 19930225

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930129

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2037261

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931012

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931013

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19931031

Ref country code: CH

Effective date: 19931031

Ref country code: BE

Effective date: 19931031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: CITEL

Effective date: 19931031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931012

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990503