EP0061990A1 - Surge arrester comprising shielding means surrounding a column of arrester means - Google Patents

Surge arrester comprising shielding means surrounding a column of arrester means Download PDF

Info

Publication number
EP0061990A1
EP0061990A1 EP82730019A EP82730019A EP0061990A1 EP 0061990 A1 EP0061990 A1 EP 0061990A1 EP 82730019 A EP82730019 A EP 82730019A EP 82730019 A EP82730019 A EP 82730019A EP 0061990 A1 EP0061990 A1 EP 0061990A1
Authority
EP
European Patent Office
Prior art keywords
voltage
arrester
elements
shielding
column
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
EP82730019A
Other languages
German (de)
French (fr)
Other versions
EP0061990B1 (en
Inventor
Mohamed Aziz Dipl.-Ing. Hassan
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0061990A1 publication Critical patent/EP0061990A1/en
Application granted granted Critical
Publication of EP0061990B1 publication Critical patent/EP0061990B1/en
Expired 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
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
    • H01T4/20—Arrangements for improving potential distribution
    • 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
    • H01C7/123—Arrangements for improving potential distribution

Definitions

  • the invention relates to a surge arrester according to patent application P 30 12 741.4, which has a column arranged in a housing and formed from a multiplicity of arrester elements and a plurality of shielding bodies enclosing the column, which are connected to one another by supporting bodies, and a device for fastening Has arrester elements.
  • the shielding bodies are the load-bearing parts of the arrester elements and also have an influence on the stress distribution over the length of the entire column of arrester elements.
  • nearby adjacent earthed components e.g. B. a grounded metal enclosure as the housing of the column of arrester elements, however, an uneven voltage distribution can still be caused, which interferes with the function of the surge arrester.
  • the invention is also based on the object, the chip using voltage-controlling elements To improve voltage distribution over the length of the surge arrester.
  • the invention provides that in a surge arrester of the type mentioned, voltage-controlling elements are arranged between adjacent shielding bodies.
  • this measure appears to agree with the known arrangement of capacitors between adjacent shielding rings, but is by no means obvious and can therefore not be taken for granted. Rather, there was the view that the arrangement with load-bearing shielding bodies according to the main patent had such a good shielding and capacitive influence on the arrester elements that all further voltage control measures were unnecessary.
  • An essential property of the invention is that the voltage-controlling elements come in a mechanically parallel arrangement to the insulating support bodies present between the shielding bodies. Their support effect is strengthened by the voltage-controlling elements, which enables more favorable dimensioning. In this context, it is advantageous to design the voltage-controlling elements in accordance with the size and type of fastening in accordance with the insulating support bodies.
  • a voltage control that acts locally to different degrees. This can be achieved in the context of the invention in that, with the same electrical dimensioning of the voltage-controlling elements, a different number of elements is arranged from shielding body to shielding body in order to compensate for the influence of earth capacity in the sense of a uniform voltage distribution over the length of the surge arrester.
  • FIG. 1 has a grounded metal housing 2, which is provided with a bushing 3 for connection to a conductor 4 carrying high voltage.
  • a column of arrester elements formed from shielding bodies 5, 6 and 7.
  • the middle six shielding bodies 5 have a somewhat smaller diameter than the upper shielding body 6 and the lower shielding body 7.
  • Each of these shielding bodies 5, 6 and 7 encloses a number of arrester elements, for example voltage-dependent resistors based on zinc oxide or a combination of voltage-dependent resistors and spark gaps.
  • 2 shows as an example that four arrester elements 11 are arranged in a star shape between the central connecting body 10 and one of the shielding bodies 5.
  • These can be zinc oxide resistors, which are housed in their own housing.
  • the shielding body 5 On the circumference of the shielding body 5 there are three insulating support bodies 12 and also three voltage-controlling elements 13, for example capacitors. The same distances are present between these components 12 and 13. If necessary, a larger or smaller number of voltage-controlling elements 13 must also be accommodated. For this purpose, only the pitch angle needs to be changed accordingly in order to, for. B. between two successive insulating support bodies 12 instead of a voltage-controlling element 13 to accommodate two of them.
  • FIG. 3 Another possibility for varying the number of voltage-controlling elements is shown in FIG. 3.
  • a voltage-controlling element 14 is used, which has essentially the same mechanical properties as the insulating support body 12, i. H. just as it has a supporting function. Due to this property, the voltage-controlling element 14 can replace the insulating support body in whole or in part. Maintaining a symmetrical arrangement of the insulating support bodies as in FIG. 2 is therefore unnecessary. Accordingly, it is shown in FIG. 3 that three insulating support bodies 12 and a voltage-controlling element 14 are arranged in the corner points of a square.

Landscapes

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

Abstract

Ein Überspannungsableiter (1) mit einer in einem Gehäuse (2) angeordneten Säule von Ableiterelementen und mehreren die Säule umschließenden Abschirmkörpern (5, 6, 7) besitzt spannungssteuernde Elemente (13, 14), die zwischen den Abschirmkörpern angeordnet sind. Die spannungssteuernden Elemente können nach Größe und Art der Befestigung den gleichfalls zwischen den Abschirmkörpern befindlichen isolierenden Stützkörpern (12) entsprechen. Durch eine Verteilung der spannungssteuernden Elemente über die Länge des Überspannungsableiters läßt sich eine gleichmäßige Spannungsverteilung beim Einbau des Ableiters in ein geerdetes Metallgehäuse erreichen.A surge arrester (1) with a column of arrester elements arranged in a housing (2) and a plurality of shielding bodies (5, 6, 7) surrounding the column has voltage-controlling elements (13, 14) which are arranged between the shielding bodies. The voltage-controlling elements can correspond in size and type of fastening to the insulating support bodies (12) which are also located between the shielding bodies. By distributing the voltage-controlling elements over the length of the surge arrester, a uniform voltage distribution can be achieved when the arrester is installed in a grounded metal housing.

Description

Die Erfindung befaßt sich mit einem Uberspannungsableiter nach der Patentanmeldung P 30 12 741.4, der eine in einem Gehäuse angeordnete, aus einer Vielzahl von Ableiterelementen gebildete Säule und mehrere die Säule um_ schließende Abschirmkörper, die untereinander durch Stützkörper verbunden sind, und eine Einrichtung zur Befestigung von Ableiterelementen besitzt. Die Abschirmkörper sind hierbei die tragenden Teile der Ableiterelemente und haben ferner einen Einfluß auf die Spannungsverteilung über die Länge der gesamten Säule von Ableiterelementen. Durch nahe benachbarte geerdete Bauteile, z. B. eine geerdete Metallkapselung als Gehäuse der Säule von Ableiterelementen, kann jedoch trotzdem eine ungleiche Spannungsverteilung hervorgerufen werden, welche die Funktion des Uberspannungsableiters stört.The invention relates to a surge arrester according to patent application P 30 12 741.4, which has a column arranged in a housing and formed from a multiplicity of arrester elements and a plurality of shielding bodies enclosing the column, which are connected to one another by supporting bodies, and a device for fastening Has arrester elements. The shielding bodies are the load-bearing parts of the arrester elements and also have an influence on the stress distribution over the length of the entire column of arrester elements. By nearby adjacent earthed components, e.g. B. a grounded metal enclosure as the housing of the column of arrester elements, however, an uneven voltage distribution can still be caused, which interferes with the function of the surge arrester.

Zu der Vergleichmäßigung der Spannungsverteilung bei Uberspannungsableitern ist es bereits bekannt, spannungssteuernde Elemente in der Form von Kondensatoren parallel zu der Reihenschaltung von Ableiterelementen zu schalten (DE-PS 1 120 567). Ferner ist es bei Uberspannungsableitern, deren aus Ableiterelementen gebildete Säule von Abschirmkörpern umschlossen ist, bekannt, zur Spannungssteuerung zwischen den Abschirmkörpern Kondensatoren anzuordnen (DE-OS 2 348 134 entspricht CH-PS 555 610).To even out the voltage distribution in surge arresters, it is already known to connect voltage-controlling elements in the form of capacitors in parallel with the series connection of arrester elements (DE-PS 1 120 567). Furthermore, it is known in the case of surge arresters whose column formed from arrester elements is surrounded by shielding bodies to arrange capacitors between the shielding bodies for voltage control (DE-OS 2 348 134 corresponds to CH-PS 555 610).

Der Erfindung liegt gleichfalls die Aufgabe zugrunde, unter Verwendung spannungssteuernder Elemente die Spannungsverteilung über die Länge des Uberspannungsableiters zu verbessern. Zur Lösung dieser Aufgabe sieht die Erfindung vor, daß bei einem Uberspannungsableiter der eingangs genannten Art zwischen benachbarten Abschirmkörpern spannungssteuernde Elemente angeordnet sind. Diese Maßnahme erscheint bei oberflächlicher Betrachtung mit der bekannten Anordnung von Kondensatoren zwischen benachbarten Abschirmringen übereinzustimmen, liegt jedoch keineswegs auf der Hand und kann somit nicht als selbstverständlich angesehen werden. Vielmehr bestand nämlich die Auffassung, daß bei der Anordnung mit tragenden Abschirmkörpern gemäß dem Hauptpatent eine so gute Abschirmung und kapazitive Beeinflussung der Ableiterelemente vorliege, daß alle weiteren Maßnahmen zur Spannungssteuerung entbehrlich seien.The invention is also based on the object, the chip using voltage-controlling elements To improve voltage distribution over the length of the surge arrester. To achieve this object, the invention provides that in a surge arrester of the type mentioned, voltage-controlling elements are arranged between adjacent shielding bodies. On superficial consideration, this measure appears to agree with the known arrangement of capacitors between adjacent shielding rings, but is by no means obvious and can therefore not be taken for granted. Rather, there was the view that the arrangement with load-bearing shielding bodies according to the main patent had such a good shielding and capacitive influence on the arrester elements that all further voltage control measures were unnecessary.

Eine wesentliche Eigenschaft der Erfindung besteht darin, daß die spannungssteuernden Elemente in eine mechanisch parallele Anordnung zu den zwischen den Abschirmkörpern vorhandenen isolierenden Stützkörpern gelangen. Deren Stützwirkung wird durch die spannungssteuernden Elemente verstärkt, was eine günstigere Dimensionierung ermöglicht. In diesem Zusammenhang ist es vorteilhaft, die spannungssteuernden Elemente nach Größe und Art der Befestigung den isolierenden Stützkörpern entsprechend auszuführen.An essential property of the invention is that the voltage-controlling elements come in a mechanically parallel arrangement to the insulating support bodies present between the shielding bodies. Their support effect is strengthened by the voltage-controlling elements, which enables more favorable dimensioning. In this context, it is advantageous to design the voltage-controlling elements in accordance with the size and type of fastening in accordance with the insulating support bodies.

Unter Umständen kann es erwünscht sein, eine örtlich unterschiedlich stark wirkende Spannungssteuerung zu erreichen. Dies ist im Rahmen der Erfindung dadurch zu verwirklichen, daß bei gleicher elektrischer Bemessung der spannungssteuernden Elemente eine von Abschirmkörper zu Abschirmkörper unterschiedliche Anzahl der Elemente angeordnet ist zum Ausgleich des Einflusses der Erdkapazität im Sinne einer gleichmäßigen Spannungsverteilung über die Länge des Überspannungsableiters.Under certain circumstances, it may be desirable to achieve a voltage control that acts locally to different degrees. This can be achieved in the context of the invention in that, with the same electrical dimensioning of the voltage-controlling elements, a different number of elements is arranged from shielding body to shielding body in order to compensate for the influence of earth capacity in the sense of a uniform voltage distribution over the length of the surge arrester.

Die Erfindung wird im folgenden anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert.

  • Die Fig. 1 zeigt einen Überspannungsableiter in einer Seitenansicht.
  • Die Fig. 2 und 3 stellen Querschnitte unterschiedlich ausgerüsteter Überspannungsableiter der in Fig. 1 gezeigten Art dar.
The invention is explained in more detail below with reference to the exemplary embodiments shown in the figures.
  • Fig. 1 shows a surge arrester in a side view.
  • 2 and 3 represent cross sections of differently equipped surge arresters of the type shown in FIG. 1.

Der Überspannungsableiter 1 gemäß der Fig. 1 besitzt ein geerdetes Metallgehäuse 2, das mit einer Durchführung 3 zum Anschluß an einen Hochspannung führenden Leiter 4 versehen ist. Im Inneren des Gehäuses 2 befindet sich eine aus Abschirmkörpern 5, 6 und 7 gebildete Säule von Ableiterelementen. Dabei weisen die mittleren sechs Abschirmkörper 5 einen etwas geringeren Durchmesser als der obere Abschirmkörper 6 und der untere Abschirmkörper 7 auf. Jeder dieser Abschirmkörper 5, 6 und 7 umschließt eine Anzahl von Ableiterelementen, z.B. von spannungsabhängigen Widerständen auf der Basis von Zinkoxid oder eine Kombination von spannungsabhängigen Widerständen und Funkenstrecken. In der Fig. 2 ist als Beispiel gezeigt, daß zwischen dem mittleren Verbindungskörper 10 und einem der Abschirmkörper 5 sternförmig vier Ableiterelemente 11 angeordnet sind. Es kann sich dabei um Zinkoxidwiderstände handeln, die in einem eigenen Gehäuse untergebracht sind. Am Umfang des Abschirmkörpers 5 befinden sich drei isolierende Stützkörper 12 und gleichfalls drei spannungssteuernde Elemente 13, z.B. Kondensatoren. Zwischen diesen Bauteilen 12 und 13 sind gleiche Abstände vorhanden. Im Beda.rfs- fall ist auch eine größere oder kleine Anzahl von spannungssteuernden Elementen 13 unterzubringen. Hierzu braucht nur der Teilungswinkel entsprechend geändert zu werden, um z. B. zwischen zwei aufeinanderfolgenden isolierenden Stützkörpern 12 statt eines spannungssteuernden Elementes 13 hiervon zwei unterzubringen.1 has a grounded metal housing 2, which is provided with a bushing 3 for connection to a conductor 4 carrying high voltage. Inside the housing 2 there is a column of arrester elements formed from shielding bodies 5, 6 and 7. The middle six shielding bodies 5 have a somewhat smaller diameter than the upper shielding body 6 and the lower shielding body 7. Each of these shielding bodies 5, 6 and 7 encloses a number of arrester elements, for example voltage-dependent resistors based on zinc oxide or a combination of voltage-dependent resistors and spark gaps. 2 shows as an example that four arrester elements 11 are arranged in a star shape between the central connecting body 10 and one of the shielding bodies 5. These can be zinc oxide resistors, which are housed in their own housing. On the circumference of the shielding body 5 there are three insulating support bodies 12 and also three voltage-controlling elements 13, for example capacitors. The same distances are present between these components 12 and 13. If necessary, a larger or smaller number of voltage-controlling elements 13 must also be accommodated. For this purpose, only the pitch angle needs to be changed accordingly in order to, for. B. between two successive insulating support bodies 12 instead of a voltage-controlling element 13 to accommodate two of them.

Eine andere Möglichkeit zur Variierung der Anzahl spannungssteuernder Elemente zeigt die Fig. 3. In diesem Fall wird ein spannungssteuerndes Element 14 verwendet, das im wesentlichen die gleichen mechanischen Eigenschaften wie die isolierenden Stützkörper 12 aufweist, d. h. ebenso wie diese eine Stützfunktion besitzt. Aufgrund dieser Eigenschaft kann das spannungssteuernde Element 14 die isolierenden Stützkörper ganz oder teilweise ersetzen. Die Einhaltung einer symmetrischen Anordnung der isolierenden Stützkörper wie in der Fig. 2 ist damit entbehrlich. Dementsprechend ist in der Fig. 3 gezeigt, daß drei isolierende Stützkörper 12 und ein spannungssteuerndes Element 14 in den Eckpunkten eines Quadrates angeordnet sind.Another possibility for varying the number of voltage-controlling elements is shown in FIG. 3. In this case, a voltage-controlling element 14 is used, which has essentially the same mechanical properties as the insulating support body 12, i. H. just as it has a supporting function. Due to this property, the voltage-controlling element 14 can replace the insulating support body in whole or in part. Maintaining a symmetrical arrangement of the insulating support bodies as in FIG. 2 is therefore unnecessary. Accordingly, it is shown in FIG. 3 that three insulating support bodies 12 and a voltage-controlling element 14 are arranged in the corner points of a square.

Claims (3)

1. Überspannungsableiter (1) mit einer in einem Gehäuse (2) angeordneten, aus einer Vielzahl von Ableiterelementen (11) gebildeten Säule und mehreren die Säule umschließenden Abschirmkörpern (5, 6, 7), die untereinander durch Stützkörper (12) verbunden sind und eine Einrichtung zur Befestigung von Ableiterelementen (11) besitzen,
dadurch gekennzeichnet , .daß zwischen benachbarten Abschirmkörpern (5, 6, 7) spannungssteuernde Elemente (13, 14) angeordnet sind.1. Surge arrester (1) with a column arranged in a housing (2) and formed from a plurality of conductor elements (11) and several shielding bodies surrounding the column (5, 6, 7), the are interconnected by support bodies (12) and have a device for fastening arrester elements (11),
characterized in that. voltage-controlling elements (13, 14) are arranged between adjacent shielding bodies (5, 6, 7). 2. Überspannungsableiter nach Anspruch 1, dadurch gekennzeichnet , daß die spannungssteuernden Elemente (13, 14) nach Größe und Art der Befestigung den isolierenden Stützkörpern (12) entsprechen.2. Surge arrester according to claim 1, characterized in that the voltage-controlling elements (13, 14) correspond to the size and type of attachment of the insulating support bodies (12). 3. Uberspannungsableiter nach Anspruch 1, dadurch gekennzeichnet , daß bei gleicher elektrischer Bemessung der spannungssteuernden Elemente (13,14) eine von Abschirmkörper zu Abschirmkörper unterschiedliche Anzahl der Elemente (13, 14) angeordnet ist zum Ausgleich des Einflusses der Erdkapazität im Sinne einer gleichmäßigen Spannungsverteilung über die Länge des Uberspannungsableiters (1).3. Surge arrester according to claim 1, characterized in that with the same electrical dimensioning of the voltage-controlling elements (13, 14) a different number of elements (13, 14) from shielding body to shielding body is arranged to compensate for the influence of the earth's capacitance in terms of a uniform voltage distribution over the length of the surge arrester (1).
EP82730019A 1981-03-26 1982-03-03 Surge arrester comprising shielding means surrounding a column of arrester means Expired EP0061990B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3112477A DE3112477C2 (en) 1981-03-26 1981-03-26 Surge arrester with shielding bodies surrounding a column of arrester elements
DE3112477 1981-03-26

Publications (2)

Publication Number Publication Date
EP0061990A1 true EP0061990A1 (en) 1982-10-06
EP0061990B1 EP0061990B1 (en) 1985-11-21

Family

ID=6128680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730019A Expired EP0061990B1 (en) 1981-03-26 1982-03-03 Surge arrester comprising shielding means surrounding a column of arrester means

Country Status (4)

Country Link
US (1) US4463404A (en)
EP (1) EP0061990B1 (en)
JP (1) JPS57189475A (en)
DE (1) DE3112477C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403643A1 (en) * 1989-01-10 1990-12-27 L.E.A. Dynatech Uniform current and voltage distribution device
WO2013178411A1 (en) * 2012-05-30 2013-12-05 Siemens Aktiengesellschaft Encapsulated surge protector having a central duct
CN105866481A (en) * 2015-11-20 2016-08-17 扬州市鑫源电气有限公司 Cordwood air-inflation-type impact voltage generating device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1210093B (en) * 1984-03-28 1989-09-06 Ispe Di Erminio Giana E C Sas DEVICE FOR THE PROTECTION OF BUILDING STRUCTURES OR SIMILAR FROM LIGHTNING
CN108766695B (en) * 2018-05-17 2020-05-22 平高东芝（廊坊）避雷器有限公司 Extra-high voltage alternating current gapless line lightning arrester

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821608A (en) * 1973-09-26 1974-06-28 Asea Ab Enclosed surge diverter
DE3004737A1 (en) * 1979-02-09 1980-08-14 Hitachi Ltd ENCLOSED Zinc Oxide Surge Protector
DE2938073A1 (en) * 1979-08-29 1981-03-19 BBC AG Brown, Boveri & Cie., Baden, Aargau ENCLOSED SURGE PROTECTOR
EP0037364A1 (en) * 1980-03-28 1981-10-07 Siemens Aktiengesellschaft Surge arrester with a column of surge elements and screening bodies

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087094A (en) * 1956-07-13 1963-04-23 Mc Graw Edison Co Lightning arrester
DE1120567B (en) * 1958-11-28 1961-12-28 Westinghouse Electric Corp Surge arresters
US3649875A (en) * 1969-08-01 1972-03-14 Mitsubishi Electric Corp Lightning arrester
US3753045A (en) * 1972-10-11 1973-08-14 Westinghouse Electric Corp Shielded metal enclosed lightning arrester
US4340924A (en) * 1980-10-27 1982-07-20 General Electric Company Grading means for high voltage metal enclosed gas insulated surge arresters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821608A (en) * 1973-09-26 1974-06-28 Asea Ab Enclosed surge diverter
DE3004737A1 (en) * 1979-02-09 1980-08-14 Hitachi Ltd ENCLOSED Zinc Oxide Surge Protector
DE2938073A1 (en) * 1979-08-29 1981-03-19 BBC AG Brown, Boveri & Cie., Baden, Aargau ENCLOSED SURGE PROTECTOR
EP0037364A1 (en) * 1980-03-28 1981-10-07 Siemens Aktiengesellschaft Surge arrester with a column of surge elements and screening bodies

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403643A1 (en) * 1989-01-10 1990-12-27 L.E.A. Dynatech Uniform current and voltage distribution device
EP0403643A4 (en) * 1989-01-10 1991-07-03 L.E.A. Dynatech Uniform current and voltage distribution device
WO2013178411A1 (en) * 2012-05-30 2013-12-05 Siemens Aktiengesellschaft Encapsulated surge protector having a central duct
CN105866481A (en) * 2015-11-20 2016-08-17 扬州市鑫源电气有限公司 Cordwood air-inflation-type impact voltage generating device
CN105866481B (en) * 2015-11-20 2019-01-22 扬州市鑫源电气有限公司 A kind of building block system Puffer-type surge voltage generating device

Also Published As

Publication number Publication date
JPS57189475A (en) 1982-11-20
US4463404A (en) 1984-07-31
DE3112477A1 (en) 1982-10-07
EP0061990B1 (en) 1985-11-21
DE3112477C2 (en) 1984-02-02

Similar Documents

Publication Publication Date Title
DE4100046A1 (en) QUADRUPOL MASS FILTER FOR CHARGED PARTICLES
DE3004737C2 (en) Encapsulated zinc oxide surge arrester
DE3112477C2 (en) Surge arrester with shielding bodies surrounding a column of arrester elements
EP0429695A1 (en) Control apparatus, particulary for controlling functions of a vehicle
DE2843120C2 (en) Encapsulated lightning protection device
DE2819528C3 (en) Surge arrester
EP0037363B1 (en) Over voltage arrester
DE3012741C2 (en) Surge arrester with a column of arrester elements and shielding bodies
DE2342772C3 (en) High voltage semiconductor rectifier
DE2457228A1 (en) Fastening device for wiring board - for units such as current distributors and similar
DE2348134A1 (en) ELECTRIC HIGH VOLTAGE DEVICE WITH A METAL ENCLOSURE AND A SURGE DEVICE
CH659924A5 (en) SURGE ARRESTERS.
CH645483A5 (en) DEVICE FOR SURGE OVERVOLTAGE.
DE669876C (en) Device for the treatment of short electrical waves in the capacitor field
DE963886C (en) One-legged or multi-legged support insulator built up from link insulators in maximum voltage systems
DE2247999A1 (en) METAL ENCLOSED HIGH VOLTAGE SYSTEM WITH AN OVERVOLTAGE ARRANGER
EP0054115B1 (en) Wire support, particularly for capacitive protection fences
DE2457568B2 (en) OVERVOLTAGE ARRESTER WITH A VOLTAGE CONNECTION SURROUNDED BY INSULATING MATERIAL
DE2348136A1 (en) ELECTRICAL DEVICE WITH EARTHED METAL ENCLOSURE
DE740960C (en) Electrostatic generator
AT323271B (en) SPACERS FOR ELECTRIC WIRE
DE1465352C (en) Spacer between two overhead lines
DE1105918B (en) Frame with several parallel installation levels for components
DE464738C (en) Frame for high-voltage electrical equipment, especially for capacitors
DD289136B5 (en) Capacitive voltage divider for gas-insulated high-voltage switchgear

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

Designated state(s): CH DE SE

17P Request for examination filed

Effective date: 19821026

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): CH LI SE

AK Designated contracting states

Designated state(s): CH LI SE

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

Ref country code: SE

Effective date: 19851130

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

Ref country code: CH

Effective date: 19880331

Ref country code: LI

Effective date: 19880331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL