EP0915544B1 - Dérivateur de surtensions, muni d'un dispositif indiquant un courant de défaut - Google Patents

Dérivateur de surtensions, muni d'un dispositif indiquant un courant de défaut Download PDF

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Publication number
EP0915544B1
EP0915544B1 EP98811058A EP98811058A EP0915544B1 EP 0915544 B1 EP0915544 B1 EP 0915544B1 EP 98811058 A EP98811058 A EP 98811058A EP 98811058 A EP98811058 A EP 98811058A EP 0915544 B1 EP0915544 B1 EP 0915544B1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
housing
arrester according
thermocolour
information carrier
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
EP98811058A
Other languages
German (de)
English (en)
Other versions
EP0915544A1 (fr
Inventor
Werner Dr. Hofbauer
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 Schweiz AG
Original Assignee
ABB Schweiz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP0915544A1 publication Critical patent/EP0915544A1/fr
Application granted granted Critical
Publication of EP0915544B1 publication Critical patent/EP0915544B1/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 surge arrester according to the Preamble of claim 1.
  • the invention takes on a state of the art of surge arresters Reference as specified in EP 0 564 334 A1.
  • One in this state of the art Surge arrester described contains one of the monitoring of the electrical apparatus for detection and fault current Display device.
  • This device has an insulating housing with a easily breakable windows. Through the insulating material housing is a Power connection of the surge arrester led.
  • the inside of the case part of the power connector is surrounded by a magnetic core, which is the secondary winding of the power connection as the primary winding having current transformer.
  • the secondary winding is with an ohmic Resistor connected, which is arranged in an interior of the housing Explosive charge is embedded. When a fault current occurs, it heats up the ohmic resistance continuously supplied with current by the current transformer very strong.
  • the resistance ignites the explosive charge above a critical one Limit temperature.
  • the window of the insulating material housing is broken open and a colored ribbon serving as a display element from the housing pushed out. After the response and the optical signaling of the faulty condition are the surge arrester and the detection and Display device removed and replaced.
  • a surge arrester connected to a high-voltage line a spark gap and one downstream of the spark gap and in one Insulated housing arranged non-linear resistor is previously known from patent Abstracts of Japan Vol. 014, No. 225 (E-0927), May 14, 1990 and JP 02 056 884 A.
  • This surge arrester also has one attached to an earth conductor Monitoring device on. The grounding conductor in turn is the same as that of the End of the resistor facing away from the spark gap is connected in an electrically conductive manner. If an overvoltage occurs on the high-voltage line, this speaks Spark gap and becomes a resistor flowing through the earth conductor follow current led.
  • an ignition signal is generated, which a Triggers an explosive charge.
  • a housing cover Monitoring device opened. A previously covered side of the lid then becomes visible and signals the response of the surge arrester.
  • an electrical junction box can be found in the housing cover Window is molded.
  • the free end is one as a nose trained and to an electrode of a PTC element arranged in the box molded detector performed.
  • the free end of the detector is with coated with a material that is sensitive to temperature changes Color change responds.
  • the operating status of the PTC element can be seen made and observed from the outside.
  • the object of the invention is as set out in the claims based on specifying a surge arrester of the type mentioned in the introduction, in which a faulty condition with extremely simple means and yet with great security can be recognized.
  • the surge arrester In the surge arrester according to the invention is a fault current Incorrect operating state caused by an information carrier indicated which at least part of the outer surface of an insulating material housing of the surge arrester and a Thermocolor contains.
  • This Information carrier is brought to a limit temperature by the fault current heated up, which is above the permissible operating temperature of the arrester. If the limit temperature is exceeded, this information carrier gives an easy and safely detectable optical signal. Since the information carrier is a contains thermal paint (Thermocolor) provided on the insulating material housing such a surge arrester in a simple and inexpensive manner manufacture and can already existing surge arresters without large Retrofitted effort by applying the Thermocolor to the housing become.
  • the single figure shows a phase conductor of a high-voltage line, which with a device containing a device for displaying fault currents Surge arrester according to the invention is electrically connected.
  • reference numeral 1 denotes a phase conductor on one grounded mast 2 electrically insulated high voltage line.
  • a surge arrester 3 is suspended.
  • the surge arrester 3 is galvanic with a current connection 4 with the phase conductor 1 connected and is attached to the mast 2 by means of a post insulator 6.
  • a second Power connection 5 of the surge arrester 3 is connected via a grounding cable 7 the mast 2 galvanically connected.
  • a high-voltage insulated housing 8 encloses a, not shown, between the power connections 4, 5 arranged stacks of non-linear resistance elements on the base of metal oxides and carries a device designed as an information carrier 9 for the visual display of a faulty one caused by a fault current State of the surge arrester.
  • the housing 8 is advantageously made of a porcelain or a filler-filled polymer, such as one in particular Silicone and / or an epoxy, and preferably has porcelain or silicone existing screens 10 on.
  • the information carrier 9 is on part of the outer surface of the insulating material housing 8 provided. This part of the outer surface of the insulating housing 8 is when a fault current carried in the resistance stack occurs to a Temperature heated, which is above a permissible operating temperature of the Apparatus. When exceeding a permissible operating temperature (e.g. 105 ° C) limit temperature of typically 150 up to 500 ° C, the information carrier 9 emits an optically detectable signal.
  • a permissible operating temperature e.g. 105 ° C
  • the information carrier 9 is advantageously on one of the temperature-increasing Effect of the fault current exposed and good from the outside recognizable part of the outer surface of the housing 8, in particular below or arranged above one of the screens 10.
  • the information carrier 9 preferably contains a thermocolor, for example [Co (NH 3 ) 6 ] ⁇ PO 4 , which is applied to the outer surface or at least part of the outer surface of the housing 9.
  • This thermocolor changes its color above the limit temperature, [Co (NH 3 ) 6 ] ⁇ PO 4, for example at 200 ° C. from yellow to blue, and retains this color even after the temperature has dropped below the limit temperature.
  • the color change permanently indicates that the surge arrester 3, which can be identified by the color change, is defective.
  • thermocolor can be used in the production of the housing-forming material material-forming raw materials are mixed.
  • One made of this material formed housing 8 then also represents the information carrier 9
  • Thermocolor can be used to retrofit an existing appliance but also in the form of a ribbon or a strip to form one heat-transferring contact surface at least on part of the outer surface of the Housing 8 are applied. This can be done in a particularly simple manner Thermocolor by spraying or brushing at least part of the Be applied to the outer surface of the housing 9.
  • the information carrier can also be attached to one other electrical apparatus, for example an isolator of a switch or a transformer, or an insulator of a high-voltage system, for example, the post insulator 6.
  • one other electrical apparatus for example an isolator of a switch or a transformer, or an insulator of a high-voltage system, for example, the post insulator 6.

Landscapes

  • Thermistors And Varistors (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (10)

  1. Parafoudre (3) comportant deux bornes électriques (4, 5) dont la première (4) est reliée à la haute tension et la deuxième (5) est reliée galvaniquement avec la terre, une pile d'élément résistifs non linéaires disposés entre les deux bornes électriques, un boítier en matériau isolant (8) qui entoure les éléments résistifs et pouvant supporter une haute tension et comportant un dispositif de signalisation visuelle de l'état défectueux du parafoudre suite à un courant de défaut ayant traversé la pile résistive, caractérisé en ce que le dispositif de signalisation est réalisé sous la forme d'au moins une partie de la surface extérieure du boítier en matériau isolant (8) et d'un support d'information (9) contenant un pigment thermique qui, lorsque le parafoudre chauffe à une température de seuil en raison du courant de défaut, laquelle est supérieure à une température de fonctionnement admissible de l'appareil, délivre un signal pouvant être perçu de manière visuelle.
  2. Parafoudre selon la revendication 1, caractérisé en ce que la température de seuil est comprise entre 150 et 500 °C.
  3. Parafoudre selon l'une des revendications 1 ou 2, caractérisé en ce que le support d'information (9) est prévu sur une partie de la surface extérieure du boítier (8) qui est exposée à l'effet élévateur de température du courant de défaut.
  4. Parafoudre selon la revendication 3, caractérisé en ce que le support d' information (9) est prévu au-dessus ou au-dessous d'un des blindages (10) d'un boítier (8) réalisé sous la forme d'un isolant creux blindé.
  5. Parafoudre selon l'une des revendications 1 à 4, caractérisé en ce que le pigment thermique est choisi de manière à ce qu'il conserve la couleur qu' il adopte au-dessus de la température de seuil même après que la température soit redescendue au-dessous de la température de seuil.
  6. Parafoudre selon l'une des revendications 1 à 5, caractérisé en ce que le pigment thermique est appliqué sur la surface extérieure ou au moins une partie de la surface extérieure du boítier (8).
  7. Parafoudre selon l'une des revendications 1 à 6, caractérisé en ce que le pigment thermique est intégré dans le matériau qui constitue le boítier.
  8. Parafoudre selon l'une des revendications 1 à 6, caractérisé en ce que le pigment thermique est appliqué sous la forme d'une bande ou d'un ruban en établissant une surface de contact transmettant la chaleur sur au moins une partie de la surface extérieure du boítier (8).
  9. Parafoudre selon l'une des revendications 1 à 6, caractérisé en ce que le pigment thermique est peint ou pulvérisé sur au moins une partie de la surface extérieure du boítier (8).
  10. Parafoudre selon l'une des revendications 1 à 9, caractérisé en ce que le support d'information (9) est lumineux et/ou réfléchissant.
EP98811058A 1997-11-08 1998-10-22 Dérivateur de surtensions, muni d'un dispositif indiquant un courant de défaut Expired - Lifetime EP0915544B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749522A DE19749522A1 (de) 1997-11-08 1997-11-08 Elektrischer Apparat, insbesondere Überspannungsableiter, mit einer Vorrichtung zur Anzeige eines Fehlerstromstroms
DE19749522 1997-11-08

Publications (2)

Publication Number Publication Date
EP0915544A1 EP0915544A1 (fr) 1999-05-12
EP0915544B1 true EP0915544B1 (fr) 2003-12-03

Family

ID=7848106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98811058A Expired - Lifetime EP0915544B1 (fr) 1997-11-08 1998-10-22 Dérivateur de surtensions, muni d'un dispositif indiquant un courant de défaut

Country Status (3)

Country Link
US (1) US6028759A (fr)
EP (1) EP0915544B1 (fr)
DE (2) DE19749522A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017191566A1 (fr) * 2016-05-03 2017-11-09 Saltek S.R.O. Protection de surtension avec indication de température de fonctionnement dépassée

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL206744B1 (pl) * 2006-04-12 2010-09-30 Abb Spo & Lstrok Ka Z Ogranicz Ogranicznik przepięć
CN105762650B (zh) * 2016-04-19 2018-03-09 国家电网公司 带雷击放电计数装置的防雷内置柱式限压器
CZ29574U1 (cs) * 2016-05-03 2016-06-21 Saltek S.R.O. Přepěťová ochrana se signalizací překročení provozní teploty
CA178834S (en) 2017-08-01 2019-02-28 The Trustees For The Time Being Of The Live Line Int Trust Drop out electrical surge arrestor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB798918A (en) * 1956-08-22 1958-07-30 Siemens Ag Improvements in or relating to electric surge arresters
JPH0256884A (ja) * 1988-08-22 1990-02-26 Ngk Insulators Ltd 避雷碍子装置における動作表示装置
GB9005827D0 (en) * 1990-03-15 1990-05-09 Raychem Gmbh Electrical protection apparatus
US5237482A (en) * 1991-07-10 1993-08-17 Joslyn Corporation High voltage surge arrester with failed surge arrester signaling device
JP3103948B2 (ja) * 1992-01-17 2000-10-30 日油技研工業株式会社 アーク発生検知具
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
US5341271A (en) * 1992-06-22 1994-08-23 Minnesota Mining And Manufacturing Company Surge arrester fault indicator
JPH0870522A (ja) * 1994-08-29 1996-03-12 Yazaki Corp 素子作動確認用窓を備えた電気接続箱
DE19506307A1 (de) * 1995-02-23 1996-08-29 Abb Management Ag Vorrichtung zur Anzeige eines fehlerhaften Zustands eines elektrischen Apparates, insbesondere eines Überspannungsableiters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017191566A1 (fr) * 2016-05-03 2017-11-09 Saltek S.R.O. Protection de surtension avec indication de température de fonctionnement dépassée

Also Published As

Publication number Publication date
US6028759A (en) 2000-02-22
EP0915544A1 (fr) 1999-05-12
DE59810327D1 (de) 2004-01-15
DE19749522A1 (de) 1999-05-12

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