EP0262056A1 - Anzeiger zum Melden eines Kurzschlusses in einer Blitzschutzvorrichtung - Google Patents

Anzeiger zum Melden eines Kurzschlusses in einer Blitzschutzvorrichtung Download PDF

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Publication number
EP0262056A1
EP0262056A1 EP87420227A EP87420227A EP0262056A1 EP 0262056 A1 EP0262056 A1 EP 0262056A1 EP 87420227 A EP87420227 A EP 87420227A EP 87420227 A EP87420227 A EP 87420227A EP 0262056 A1 EP0262056 A1 EP 0262056A1
Authority
EP
European Patent Office
Prior art keywords
current
indicator according
indicator
winding
continuation
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
EP87420227A
Other languages
English (en)
French (fr)
Other versions
EP0262056B1 (de
Inventor
Jean-Pierre Cinquin
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.)
Ferraz SA
Original Assignee
Ferraz SA
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 Ferraz SA filed Critical Ferraz SA
Priority to AT87420227T priority Critical patent/ATE69111T1/de
Publication of EP0262056A1 publication Critical patent/EP0262056A1/de
Application granted granted Critical
Publication of EP0262056B1 publication Critical patent/EP0262056B1/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
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • 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
    • H01T1/12—Means structurally associated with spark gap for recording operation thereof

Definitions

  • the present invention relates to surge protective devices intended for the protection of power lines, in particular of medium voltage overhead lines.
  • devices of the kind in question generally comprise an insulating body provided with two connection capsules respectively connected to the electric line to be protected and to the ground.
  • This body contains an element which in normal operation ensures the reciprocal isolation of the two aforementioned capsules, while being capable of becoming momentarily conductive under the effect of an abrupt rise in tension due to the fall of lightning on the line, being observed that said element must become perfectly insulating once the high voltage shock wave thus removed.
  • this return to the insulating state takes place in poor conditions, in particular as a result of damage to the insulating element, in which case there is the appearance of a current known as "immediately" which in fact constitutes a short circuit on the envisaged power line.
  • the latter usually includes a large number of surge arresters, it is difficult in practice to determine which device gives rise to the "continuation" current and to the short circuit.
  • the present invention intends to remedy, which relates to an indicator intended to be incorporated into conventional devices with a view to signaling in a perfectly apparent manner the possible short-circuiting of the arrester with which said indicator is associated.
  • the indicator according to the invention is mainly remarkable in that it comprises a rectilinear strip which is made of an elastically deformable material so as to be able to be folded down and eclipsed by means of deformation against the arrester and one of the ends of which is made integral of the latter while the opposite end is retained in place by means of a latch mechanism placed under the dependence of electrical release means actuated as soon as a "continuation" current appears through the arrester considered.
  • the signaling strip is practically invisible as long as it is kept in the folded state against the body of the arrester, whereas as soon as the latch mechanism has released it, said strip is suddenly deployed constituting a sort flag which protrudes laterally from the aforementioned body and which can therefore be very easily detected.
  • the reference 1 designates the electrode or connection capsule provided at the base of the insulating body 2 of any arrester, that to fix the ideas one will suppose to be of the type described in the French patent application No 86 09572 filed on June 27, 1986 in the name of the Claimant.
  • the lower part of the insulation element 3 (fig. 2) of this arrester is connected by a spring 4 to a metal disc 5, which is itself connected to the capsule 1 through the indicator which is the object of the present invention.
  • This indicator firstly comprises a straight strip 6 made of an elastically deformable material, for example spring steel.
  • One end of this strip 6 is permanently fixed to the capsule 1 by a rivet 7, while the opposite end, provided with a retaining stud 8, cooperates with a latch mechanism so that said strip 6 is capable of being maintained in the folded-down state and eclipsed against said capsule 1.
  • this latch mechanism comprises a fusible wire 9 in the form of a pin, the central part of which is attached to the profiled tail of the stud 8, which passes through a hole in the capsule 1 to slide axially in an opening 10a of a spacer insulator 10 held between the disc 5 and the bottom of the aforementioned capsule 1.
  • the ends of the fusible wire 9 are connected to a filter formed by two windings 11 and 12 connected in parallel between the disc 5 and the connection capsule 1.
  • the winding 11 is produced on a support 13 so as to present two superimposed windings 11a and 11b whose turns are inverted in order to cancel the magnetic field generated and thus obtain an aselfic coil forming a resistance.
  • the winding 12 is carried out on a support 14 established at a larger internal diameter, so as to surround one or the other of the windings 11 a and 11 b and in any event to obtain an inductive coil.
  • the entire filter described above is produced using a continuous wire, one end of which, connected to the corresponding end of the fusible wire 9, has a wide loop 15 which is engaged in two notches 10b made in an upper shoulder 10c of the insulating spacer 10, which shoulder 10c is intended to form a support for the metal disc 5 described above. It is understood that if care is taken to establish the notches 10b at a depth slightly less than the diameter of the wire of the loop 15, during assembly of the assembly this wire will be crushed between the bottom of said notches and the underside of disk 5, so that an efficient connection is obtained without any other particular means.
  • the insulation element 3 functions perfectly and opposes any connection between the overhead line and the earth.
  • the inductive winding 12 instantaneously ensures the blocking of the very strong pr so that the current at very high voltage can neither pass nor pass through said coil, nor through the fusible wire 9 connected in series with the latter and which therefore continues to effectively retain the stud 8 and the strip 6. Consequently this current is forced to flow to the ground through the resistance formed by the aselfic coil 11 or 111, allowing, after evacuation, the insulation element 3 to return to its initial state for which it opposes any passage of current.
  • the coil 11 or 111 prohibits or at least slows down the passage of the current from "continuation" to 50 Herts, so that this current is forced to pass through the coil 12 and the fuse wire 9 connected in series with it. As this fusible wire is established so as to melt under this current, it consequently releases the stud 8. Because of its elastic resistance to deformation, the end of the strip 6 is itself released, so that it suddenly returns to its initial rectilinear position, thus projecting laterally with respect to the body 1 of the arrester, in the manner of a signaling flag (position indicated in broken line in 6 'in fig. 1).
  • Such a flag is capable of being easily detected, especially if care has been taken to color in bright red or bright yellow the face of the strip 6 which is normally applied against the capsule 1.
  • the fusible wire 9 can of course be replaced with a view to rehabilitating the indicator, after repairing the arrester itself.
  • Fig. 6 and 7 illustrate another embodiment of the invention, according to which the support 13 of the aselfic winding 11 or 111 is arranged to receive slidingly a movable core 17 similar to that of an electromagnet and suitable for forming latch mechanism in cooperation with a trigger 18.
  • the lower end of this core is in contact with the deformable part 18a of the aforementioned trigger 18, which bears against the inner face of the connection capsule 1.
  • the trigger 18 extends vertically at 18b beyond the deformable part 18a, to present a fork-shaped end part open upwards, inside which is introduced the groove of the profiled tail of the retaining stud 8 associated with the strip 6 .
  • the invention encompasses lightning arresters equipped with a short-circuiting signaling indicator of the type described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Locating Faults (AREA)
  • Fuses (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
EP87420227A 1986-08-28 1987-08-27 Anzeiger zum Melden eines Kurzschlusses in einer Blitzschutzvorrichtung Expired - Lifetime EP0262056B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420227T ATE69111T1 (de) 1986-08-28 1987-08-27 Anzeiger zum melden eines kurzschlusses in einer blitzschutzvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8612297A FR2603418B1 (fr) 1986-08-28 1986-08-28 Indicateur pour la signalisation de la mise en court-circuit d'un parafoudre
FR8612297 1986-08-28

Publications (2)

Publication Number Publication Date
EP0262056A1 true EP0262056A1 (de) 1988-03-30
EP0262056B1 EP0262056B1 (de) 1991-10-30

Family

ID=9338619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420227A Expired - Lifetime EP0262056B1 (de) 1986-08-28 1987-08-27 Anzeiger zum Melden eines Kurzschlusses in einer Blitzschutzvorrichtung

Country Status (9)

Country Link
US (1) US4788622A (de)
EP (1) EP0262056B1 (de)
JP (1) JPS6364278A (de)
AT (1) ATE69111T1 (de)
CA (1) CA1311262C (de)
DE (1) DE3774230D1 (de)
ES (1) ES2025688T3 (de)
FR (1) FR2603418B1 (de)
GR (1) GR3003035T3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU626205B2 (en) * 1989-12-07 1992-07-23 Hitachi Limited Lightning arrester on tower for power transmission
EP0521805A1 (de) * 1991-07-03 1993-01-07 FERRAZ Société Anonyme Fehleranzeige für einen Blitzableiter
FR2685533A1 (fr) * 1991-12-20 1993-06-25 Soule Sa Parafoudre comprenant une piece de contact perfectionnee.
FR2685532A1 (fr) * 1991-12-20 1993-06-25 Soule Sa Parafoudre a proprietes mecaniques perfectionnees.
ES2079289A2 (es) * 1992-10-07 1996-01-01 Legrand Sa Limitador de sobretension con medio indicador de fallo.
WO1998006111A1 (de) * 1996-08-01 1998-02-12 Siemens Aktiengesellschaft Überspannungsableiter

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864455A (en) * 1988-02-16 1989-09-05 Mitsubishi Denki Kabushiki Kaisha Arrester disconnecting device
US4857857A (en) * 1988-11-23 1989-08-15 The Research Foundation Of State University Of New York Electrode catheter testing device
FR2652457B1 (fr) * 1989-09-22 1993-12-24 Simel Ste Indle Materiel Electr Dispositif parafoudre a indicateur visuel de defaut.
FR2658614A1 (fr) * 1990-02-20 1991-08-23 Sediver Appareil electrique muni d'un dispositif de signalisation de defaut.
US5237482A (en) * 1991-07-10 1993-08-17 Joslyn Corporation High voltage surge arrester with failed surge arrester signaling device
NO304400B1 (no) * 1992-03-30 1998-12-07 Sediver Sociutu Europ D Isolat Anordning for Õ pÕvise og anvise en feilstr°m gjennom en lynavleder eller en isolator
FR2689979B1 (fr) * 1992-04-10 1994-06-03 Sediver Ste Europ Isolateurs V Dispositif pour la detection et la signalisation d'un courant de defaut dans un parafoudre ou un isolateur.
US5341271A (en) * 1992-06-22 1994-08-23 Minnesota Mining And Manufacturing Company Surge arrester fault indicator
US6133818A (en) * 1999-08-11 2000-10-17 Space Systems/Loral, Inc. Redundant fuse wire release device
EP1369890A1 (de) * 2002-06-07 2003-12-10 Abb Research Ltd. Schlagmeldersystem für eine Hochspannungssicherung
DE102006053986A1 (de) * 2006-11-10 2008-05-15 Siemens Ag Überspannungsableiter
FR2913504B1 (fr) * 2007-03-07 2009-04-17 Airbus France Sas Dispositif et procede de detection des impacts de foudre sur une structure en materiau electriquement isolant.
US9085377B2 (en) * 2011-05-17 2015-07-21 Space Systems/Loral, Llc Redundant fuse wire release device
RU2707584C1 (ru) * 2018-12-27 2019-11-28 Олег Иванович Громов Устройство для ограничения перенапряжений с функцией самодиагностики состояния защитного элемента

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH519757A (de) * 1971-03-05 1972-02-29 Sprecher & Schuh Ag Kurzschlussanzeiger
USB515452I5 (de) * 1974-10-17 1976-02-10
DE2707425A1 (de) * 1976-02-25 1977-09-15 Hitachi Ltd Blitzstrom-melder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1526770A (en) * 1923-05-22 1925-02-17 Brain Orlando William Means for testing faulty electric-line insulators and indicating leakage therein
US2498120A (en) * 1947-04-25 1950-02-21 Kearney James R Corp Electrical protective device
GB919788A (en) * 1960-07-06 1963-02-27 Westinghouse Electric Corp Circuit interrupter
US3869650A (en) * 1973-05-30 1975-03-04 Joslyn Mfg & Supply Co Disconnector
JPS5336874B2 (de) * 1973-06-29 1978-10-05
JPS6026467B2 (ja) * 1978-11-21 1985-06-24 株式会社東芝 避雷器の特性劣化検出装置
JPS597584U (ja) * 1982-07-06 1984-01-18 三菱電機株式会社 避雷装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH519757A (de) * 1971-03-05 1972-02-29 Sprecher & Schuh Ag Kurzschlussanzeiger
USB515452I5 (de) * 1974-10-17 1976-02-10
DE2707425A1 (de) * 1976-02-25 1977-09-15 Hitachi Ltd Blitzstrom-melder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELEKTRONISCHE ZEITSCHRIFT, vol. 99, no. 6, 1978, page 364; K.PFISTERER GmbH & CO.KG; "Kurzschlussanzeiger" *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU626205B2 (en) * 1989-12-07 1992-07-23 Hitachi Limited Lightning arrester on tower for power transmission
EP0521805A1 (de) * 1991-07-03 1993-01-07 FERRAZ Société Anonyme Fehleranzeige für einen Blitzableiter
FR2678764A1 (fr) * 1991-07-03 1993-01-08 Ferraz Indicateur de defaut pour un parafoudre.
FR2685533A1 (fr) * 1991-12-20 1993-06-25 Soule Sa Parafoudre comprenant une piece de contact perfectionnee.
FR2685532A1 (fr) * 1991-12-20 1993-06-25 Soule Sa Parafoudre a proprietes mecaniques perfectionnees.
EP0549432A1 (de) * 1991-12-20 1993-06-30 Soule Materiel Electrique Blitzableiter mit mechanisch verbesserten Eigenschaften
ES2079289A2 (es) * 1992-10-07 1996-01-01 Legrand Sa Limitador de sobretension con medio indicador de fallo.
WO1998006111A1 (de) * 1996-08-01 1998-02-12 Siemens Aktiengesellschaft Überspannungsableiter

Also Published As

Publication number Publication date
FR2603418A1 (fr) 1988-03-04
ATE69111T1 (de) 1991-11-15
FR2603418B1 (fr) 1988-11-10
DE3774230D1 (de) 1991-12-05
CA1311262C (en) 1992-12-08
EP0262056B1 (de) 1991-10-30
ES2025688T3 (es) 1992-04-01
GR3003035T3 (en) 1993-02-17
US4788622A (en) 1988-11-29
JPS6364278A (ja) 1988-03-22

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