EP0729209A1 - Dispositif d'indication d'un état défectueux d'un appareil électrique, en particulier un dérivateur de surtensions - Google Patents

Dispositif d'indication d'un état défectueux d'un appareil électrique, en particulier un dérivateur de surtensions Download PDF

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Publication number
EP0729209A1
EP0729209A1 EP96810083A EP96810083A EP0729209A1 EP 0729209 A1 EP0729209 A1 EP 0729209A1 EP 96810083 A EP96810083 A EP 96810083A EP 96810083 A EP96810083 A EP 96810083A EP 0729209 A1 EP0729209 A1 EP 0729209A1
Authority
EP
European Patent Office
Prior art keywords
shell
display device
insulating material
housing
switching element
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
EP96810083A
Other languages
German (de)
English (en)
Other versions
EP0729209B1 (fr
Inventor
Walter Schmidt
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 AG Germany
Original Assignee
ABB Management AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Management AG filed Critical ABB Management AG
Priority to SI9630036T priority Critical patent/SI0729209T1/xx
Publication of EP0729209A1 publication Critical patent/EP0729209A1/fr
Application granted granted Critical
Publication of EP0729209B1 publication Critical patent/EP0729209B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01T1/12—Means structurally associated with spark gap for recording operation thereof

Definitions

  • the invention is based on a device for indicating a faulty state of an electrical apparatus, in particular a surge arrester, with a sensor for detecting a fault current flowing through the apparatus, a gas-tight insulating material housing which receives the sensor and a display element. If a fault current occurs, the sensor destroys the housing and makes the display element visible. An observer can recognize the faulty condition of the apparatus without the use of aids and promptly replace it.
  • the invention relates to a prior art of display devices, as specified in EP 0 564 334 A1.
  • a display device described in this prior art is used to monitor a surge arrester used in a high or medium voltage network for a faulty operating state.
  • This device has an insulating material housing with an easily breakable window.
  • a power connection of the surge arrester is led through the insulating housing.
  • the part of the power connection located inside the housing is surrounded by a magnetic core which carries the secondary winding of a current transformer which has the power connection as the primary winding.
  • the secondary winding is with connected to an ohmic resistor which is embedded in an explosive charge arranged inside the housing. If a fault current occurs, the ohmic resistance continuously supplied by the current transformer heats up very strongly.
  • the resistance ignites the explosive charge above a critical temperature limit.
  • the window of the insulating material housing is broken open and a colored band serving as a display element is ejected from the housing. After the faulty state has responded and signaled, the surge arrester and the display device are removed and replaced.
  • the invention is based on the object of specifying a display device of the type mentioned, which is distinguished by a simple structure and which can be made operational again after the response in an economical manner.
  • the display device is characterized in that, in addition to a reusable metal housing, it only contains a commercially available switching element which is sold in large quantities, the remainder of which can be easily removed from the metal housing after the display device has responded and replaced by a new switching element.
  • a commercially available switching element which is sold in large quantities, the remainder of which can be easily removed from the metal housing after the display device has responded and replaced by a new switching element.
  • an ohmic resistor provided in the switching element for example a fuse or a PTC resistor
  • the operating states to be recorded by the apparatus to be protected such as current surges of, for example, 100 kA during 4/10 ⁇ s, can act on the display device in a very simple manner, without the latter To initiate response.
  • FIGS. 1 and 2 denotes an electrical apparatus designed as a surge arrester with a potential-carrying part 2 acting as a current connection, which is connected in an electrically conductive manner to a device 3 for indicating a defective state of the surge arrester 1.
  • the display device has a two-part metal housing 4 made of a material which conducts electricity well, such as aluminum or an aluminum alloy, which is fastened to a switching element 5 of the display device 3.
  • the switching element 5 contains a cylinder-symmetrical, gas-tight insulating material housing 6 made of a brittle material, such as a highly filled polymer based on an epoxy, and two cylinder-symmetrical electrodes 7, 8 which are guided into the insulating material housing and each held at one end of the insulating material housing 6
  • the two electrodes 7, 8 are arranged one above the other on the axis of the insulating material housing 6 and form a spark gap 9 in the insulating material housing 6 at the free ends, of which the electrode 7 is formed as a tip.
  • the mutually facing end sections of the electrodes 7, 8 are connected to the current connections of a resistor 10 which is connected in parallel with the spark gap 9 and is preferably designed as a fuse or PTC thermistor.
  • the resistor 10 is dimensioned such that it can carry a high current surge value, for example of 100 kA 4/10 microseconds, still held by the surge arrester 1, and that when loaded for a predetermined period of time, for example 0.1 ms, with a value above one predetermined limit value current, for example 20 A, its electrical conductivity, for example by melting or through a PTC transition, suddenly reduced.
  • An explosive charge 11 is attached in the interior of the insulating material housing 6, not far from the spark gap 9, the amount of which is dimensioned such that when the charge is ignited, the insulating material housing 6 can be detonated into at least two parts which are led away from one another and each hold one of the two electrodes 7, 8.
  • the metal housing 4 is formed by two shells 12, 13 which have different diameters and which are each held at their ends at opposite ends of the switching element 5.
  • the shell 12 with the larger diameter accommodates the shell 13 with the smaller diameter.
  • the shell 12 has an opening in its bottom through which a connection of the electrode 7, which is galvanically connected to the potential-carrying part 2 of the surge arrester and has an external thread, is guided.
  • the shell 12 is not by means of a designated nut firmly connected to the upper end of the switching element 5.
  • the shell 12 carries at least one contact element 14, which is directed into the shell interior and is ring-shaped and has an inner cone.
  • This contact element 14 is provided with an internal thread which interacts with an external thread of the shell 12.
  • the shell 12 has discharge openings 15 for compressed gas.
  • These blow-out openings can be provided with a filter which retains solid parts inside the housing and can be designed in such a way that escaping compressed gas is guided in a predetermined direction.
  • the shell 13 also has an opening in its bottom through which a connection of the electrode 8, which has an external thread and is connected to earth potential, is guided.
  • the shell 13 is fixedly connected to the lower end of the switching element 5 by means of an unspecified nut.
  • the shell 13 carries on its outer side covered by the shell 12 a display element 16, for example in the form of a color coating.
  • the shell 13 is widened like a cone and is formed in the region of the shell edge on its outer side as an electrical contact element 17 which is adapted to the inner cone of the annular contact element 14 is.
  • the interior of the metal housing 4 is closed off by a cover 18 which is led from the bottom of the shell 13 to the edge of the shell 12.
  • the surge arrester 1 only carries a small leakage current, which is typically in the mA range. This leakage current flows from the potential-carrying part 2 via the electrode 7, the resistor 10, the electrode 8 and a flexible conductor section, not shown, which is galvanically connected to this electrode 8 by means of a screw connection, to earth.
  • the surge arrester 1 or another electrical device for example an insulator of a switch or a transformer, or an insulator of a high-voltage system, has a defect, then a fault current flows in the A or even kA range through the ohmic, which acts as a current sensor Resistor 10.
  • Resistor 10 is strongly heated and changes to a high resistance state within a few ms, for example by melting or a PTC transition.
  • the fault current now commutates with arcing into a current path containing the spark gap 9.
  • the arranged in the area of the spark gap 9 explosive charge 11 is ignited by the arc forming.
  • the compressed gas is expelled through the blow-out openings from the inside of the metal housing 4 enclosed by the shells 12 and 13.
  • the insulating material housing 6 is destroyed, splinters are retained by the metal housing 4 inside the housing.
  • the defective surge arrester 1 and the display device 3 can now be removed and replaced by new devices.
  • the display device 3 can be made operational again in a particularly economical manner by installing a new switching element 5. After unscrewing the contact element 14 and loosening the two nuts not shown in the figures, only the two electrodes 7 and 8 have to be removed and then only the new switching element 5 has to be inserted and screwed.

Landscapes

  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
EP96810083A 1995-02-23 1996-02-09 Dispositif d'indication d'un état défectueux d'un appareil électrique, en particulier un dérivateur de surtensions Expired - Lifetime EP0729209B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630036T SI0729209T1 (en) 1995-02-23 1996-02-09 Device for indicating a defective state of an electric apparatus, especially a surge arrester

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19506307 1995-02-23
DE19506307A DE19506307A1 (de) 1995-02-23 1995-02-23 Vorrichtung zur Anzeige eines fehlerhaften Zustands eines elektrischen Apparates, insbesondere eines Überspannungsableiters

Publications (2)

Publication Number Publication Date
EP0729209A1 true EP0729209A1 (fr) 1996-08-28
EP0729209B1 EP0729209B1 (fr) 1998-09-02

Family

ID=7754838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810083A Expired - Lifetime EP0729209B1 (fr) 1995-02-23 1996-02-09 Dispositif d'indication d'un état défectueux d'un appareil électrique, en particulier un dérivateur de surtensions

Country Status (15)

Country Link
US (1) US5650772A (fr)
EP (1) EP0729209B1 (fr)
JP (1) JP3663250B2 (fr)
KR (1) KR100353660B1 (fr)
CN (1) CN1050706C (fr)
AU (1) AU700660B2 (fr)
BR (1) BR9600783A (fr)
CA (1) CA2160421C (fr)
CZ (1) CZ286499B6 (fr)
DE (2) DE19506307A1 (fr)
ES (1) ES2124074T3 (fr)
PL (1) PL179117B1 (fr)
RU (1) RU2158460C2 (fr)
SI (1) SI0729209T1 (fr)
SK (1) SK280437B6 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008292A1 (fr) * 1997-08-11 1999-02-18 Chengeta, Cuthbert Paratonnerre de ligne
EP0915544A1 (fr) * 1997-11-08 1999-05-12 Asea Brown Boveri AG Appareil électrique, en particulier dérivateur de surtensions, muni d'un dispositif indiquant un courant de défaut
EP1231686A1 (fr) * 2001-02-07 2002-08-14 Siemens Aktiengesellschaft Moyens de signalisation pour indication du déclenchement d'un dérivateur de surtensions
WO2019243030A1 (fr) 2018-06-18 2019-12-26 Siemens Aktiengesellschaft Dispositif de séparation pour un déflecteur de surtension
EP3293839B1 (fr) * 2016-09-13 2024-05-22 Hitachi Energy Ltd Protection d'un limiteur de surtension avec une meilleure protection contre les défaillances de la surcharge thermique en cas de surtension temporaire ligne dans une grille électrique

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6031368A (en) * 1996-09-12 2000-02-29 S&C Electric Company Sensing apparatus for cable termination devices in power distribution systems
DE19637984A1 (de) * 1996-09-18 1998-03-19 Asea Brown Boveri Elektrischer Apparat, insbesondere Überspannungsableiter und System zur Anzeige des Zustands dieses Apparats in einer zentralen Auswertevorrichtung
KR100660627B1 (ko) 2005-02-28 2006-12-22 강영길 피뢰장치용 고장표시기
KR101047879B1 (ko) * 2008-07-21 2011-07-08 한국전력공사 전력 기기의 충전부 내장형 장치
DE102010047244A1 (de) * 2010-10-04 2012-04-05 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzvorrichtung
ES2907128T3 (es) * 2016-02-29 2022-04-22 Hitachi Energy Switzerland Ag Dispositivo seccionador para descargador de sobretensiones y conjunto de protección que comprende un descargador de sobretensiones conectado a dicho dispositivo seccionador
EP3513468B1 (fr) * 2016-09-13 2020-07-15 ABB Power Grids Switzerland AG Dispositif sectionneur pour parasurtenseur et ensemble de protection comprenant un parasurtenseur connecté à un tel dispositif sectionneur
WO2020223348A1 (fr) 2019-04-29 2020-11-05 Hubbell Incorporated Dispositif de déconnexion et assemblage de protection contre les surtensions équipé dudit dispositif
DE102019207465A1 (de) 2019-05-22 2020-11-26 Siemens Aktiengesellschaft Abtrennvorrichtung für einen Überspannungsableiter und Anordnung
DE102020215914A1 (de) 2020-12-15 2022-06-15 Siemens Energy Global GmbH & Co. KG Sicherungsanordnung eines Überspannungsableiterindikators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1122257A (fr) * 1955-02-01 1956-09-04 Dispositif de protection électrique
WO1993001641A1 (fr) * 1991-07-10 1993-01-21 Joslyn Corporation Limiteur de surtension pourvu d'un dispositif signalant les defaillances
EP0564334A1 (fr) * 1992-03-30 1993-10-06 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Dispositif pour la détection et la signalisation d'un courant de défaut dans un parafoudre ou un isolateur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655889C (de) * 1930-05-05 1938-01-25 Aeg Vorrichtung zum Anzeigen des UEberschlages an Leitungsmasten mit Hilfe von Explosionsfunkenstrecken
US2677817A (en) * 1950-07-10 1954-05-04 Harold L Rorden Flashover indicator
US3573782A (en) * 1968-05-23 1971-04-06 United Aircraft Corp Current monitor
US4734823A (en) * 1985-11-01 1988-03-29 Joslyn Corporation Fault current interrupter and explosive disconnector for surge arrester
US5057810A (en) * 1991-02-14 1991-10-15 Hubbell Incorporated Arrester isolator-disconnector
US5341271A (en) * 1992-06-22 1994-08-23 Minnesota Mining And Manufacturing Company Surge arrester fault indicator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1122257A (fr) * 1955-02-01 1956-09-04 Dispositif de protection électrique
WO1993001641A1 (fr) * 1991-07-10 1993-01-21 Joslyn Corporation Limiteur de surtension pourvu d'un dispositif signalant les defaillances
EP0564334A1 (fr) * 1992-03-30 1993-10-06 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Dispositif pour la détection et la signalisation d'un courant de défaut dans un parafoudre ou un isolateur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008292A1 (fr) * 1997-08-11 1999-02-18 Chengeta, Cuthbert Paratonnerre de ligne
EP0915544A1 (fr) * 1997-11-08 1999-05-12 Asea Brown Boveri AG Appareil électrique, en particulier dérivateur de surtensions, muni d'un dispositif indiquant un courant de défaut
EP1231686A1 (fr) * 2001-02-07 2002-08-14 Siemens Aktiengesellschaft Moyens de signalisation pour indication du déclenchement d'un dérivateur de surtensions
EP3293839B1 (fr) * 2016-09-13 2024-05-22 Hitachi Energy Ltd Protection d'un limiteur de surtension avec une meilleure protection contre les défaillances de la surcharge thermique en cas de surtension temporaire ligne dans une grille électrique
WO2019243030A1 (fr) 2018-06-18 2019-12-26 Siemens Aktiengesellschaft Dispositif de séparation pour un déflecteur de surtension

Also Published As

Publication number Publication date
DE19506307A1 (de) 1996-08-29
JP3663250B2 (ja) 2005-06-22
BR9600783A (pt) 1999-10-13
CZ286499B6 (en) 2000-04-12
EP0729209B1 (fr) 1998-09-02
CN1050706C (zh) 2000-03-22
CZ53696A3 (en) 1996-09-11
CA2160421C (fr) 2004-09-07
KR100353660B1 (ko) 2002-12-18
CA2160421A1 (fr) 1996-08-24
JPH08255665A (ja) 1996-10-01
CN1135109A (zh) 1996-11-06
PL179117B1 (pl) 2000-07-31
AU700660B2 (en) 1999-01-14
KR960032827A (ko) 1996-09-17
DE59600489D1 (de) 1998-10-08
SK23396A3 (en) 1997-02-05
ES2124074T3 (es) 1999-01-16
SK280437B6 (sk) 2000-02-14
US5650772A (en) 1997-07-22
SI0729209T1 (en) 1999-04-30
AU4445696A (en) 1996-08-29
PL312880A1 (en) 1996-09-02
RU2158460C2 (ru) 2000-10-27

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