EP0163053B1 - Dérivateur de surtensions - Google Patents

Dérivateur de surtensions Download PDF

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Publication number
EP0163053B1
EP0163053B1 EP85103827A EP85103827A EP0163053B1 EP 0163053 B1 EP0163053 B1 EP 0163053B1 EP 85103827 A EP85103827 A EP 85103827A EP 85103827 A EP85103827 A EP 85103827A EP 0163053 B1 EP0163053 B1 EP 0163053B1
Authority
EP
European Patent Office
Prior art keywords
plug
housing
connection
arrester according
dissipating member
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
Application number
EP85103827A
Other languages
German (de)
English (en)
Other versions
EP0163053A1 (fr
Inventor
Martin Dipl.-Ing. Schuster
Dieter Dipl.-Ing. Sander
Gottfried Ing. Bäuerle (grad.)
Albert Ing. Bachmeier (Grad.)
Werner Dipl.-Ing. Heiss
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.)
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Original Assignee
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
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 Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG filed Critical Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Publication of EP0163053A1 publication Critical patent/EP0163053A1/fr
Application granted granted Critical
Publication of EP0163053B1 publication Critical patent/EP0163053B1/fr
Expired 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
    • 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
    • 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
    • H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus

Definitions

  • the invention relates to a surge arrester which has the features of the preamble of claim 1.
  • the part of the plug connection that is structurally combined with the surge voltage has an angular housing made of an elastomeric material.
  • One leg of this housing is designed as a plug, the other as a socket, into which the one end section of the surge arrester, which is designed as a plug, is inserted.
  • the other end of the surge arrester housing which is also made of an elastomeric material and which contains a surge arrester body consisting of a plurality of surge arrester elements arranged in a row and consisting of a metal oxide, is provided with a protruding connecting bolt which must be connected to earth potential.
  • the disadvantage here is not only that an earth cable must be connected to the connecting bolts.
  • a modified embodiment of this surge arrester also has the same disadvantages, in which the surge arrester elements are accommodated in one leg of the angular housing and therefore cannot be separated from this housing or cannot be separated easily.
  • the housing has one end of the arrester body in an electrically conductive connection. Therefore, this surge arrester eliminates the need to connect an earthing cable. However, this surge arrester cannot be used together with a conventional plug connection for connecting cables to an encapsulated system.
  • the invention has for its object to provide a surge arrester which, if a connection to a conductor lying in an encapsulated system is required, can be installed without difficulty and in particular also retrospectively and allows convenient control and interchangeability.
  • both the housing of the arrester body and that of the part of the plug connection which is structurally combined with it are made of metal and the latter housing is electrically conductively connected to the encapsulation of the system which is at ground potential when the plug connection is made, it is only necessary to mount the surge arrester connecting the two parts of the connector. This is because both the mechanical connection and all the necessary electrical connections are made. An exchange is just as easy, because all you have to do is disconnect the connector. Since the connection to the conductor lying within the encapsulation is made via a plug connection and the part of this plug connection which is designed as a leadthrough, the encapsulation need not be opened for assembly and disassembly. The arrangement outside the encapsulation still allows for easy control.
  • the part of the plug connection which is structurally combined with the arrester body is provided with a connecting device for a cable. This makes it possible to use a part of a plug connection provided for a cable connection for the connection of the surge arrester. A carbde socket is therefore not required.
  • the plug connection can be designed in the usual way, that is to say either with an outer cone or with an inner cone of the plug, in order to achieve an electrically sealed closure of the plug socket.
  • the housing containing the arrester body is expediently designed according to claim 2, a releasable connection to the housing of the plug connection part being particularly advantageous if the plug connection part is a cable plug. Access to the arrester body then does not require opening the housing of the connector part. It is also advantageous to design the housing of the arrester body according to claim 4.
  • the conductor body can be insulated by means of a gas surrounding it, which fills the intermediate space between the conductor body and an insulator which surrounds it at a distance.
  • the arrester body can be embedded in silicone rubber.
  • an overpressure relief device is advantageously provided with an indicator: .E; en.
  • connection device with which a cable can be connected directly, for example by clamping
  • a connection device in the form of a plug connection part for a cable plug can also be provided.
  • Such an embodiment has the advantage that only the existing cable plug has to be pulled to install the surge arrester and, after the surge arrester has been plugged in, it has to be inserted into the socket of the cable plug that has become free in the socket of the surge arrester.
  • a surge arrester to be arranged outside a metal-encapsulated switch and to be connected to a conductor located within the encapsulation of the switch has a columnar arrester body 102 formed from a plurality of stacked zinc oxide disks, which concentrically surrounds a porcelain tube at a distance.
  • This porcelain tube is closed at one end by means of a disk-shaped base inserted into this end with the interposition of a seal and in a gas-tight manner.
  • the one end face of the arrester body 102 is supported on the inside of the base with the interposition of a contact plate and a prestressed spring assembly.
  • the other end face of the arrester body 102 rests on a removable, metallic cover which engages over this tube end and forms a likewise gas-tight seal with the interposition of a seal.
  • the side of the cover facing away from the arrester body 102 flies to the bottom of a cup-shaped, metallic housing 110 which concentrically surrounds the porcelain tube at a distance. Both the bottom of the housing 110 and the cover connected to it penetrate channels of a filling valve or an overpressure relief device having an indicator, both of which are arranged on the outside of the bottom of the housing 110.
  • a connecting line connected on the one hand to the contact plate is passed through the bottom in a gas-tight manner, the other end of which is connected to a dome-shaped counter-contact piece 114, the recess of which is open towards the bottom.
  • One end of a prestressed coil spring engages in this recess, the other end of which is supported on the ground.
  • the space between the housing 110 and the porcelain tube is filled with an insulating material.
  • the inside of the porcelain tube is filled with nitrogen, but could also be filled with silicone rubber, for example.
  • the housing 110 is flanged on its open side to the metallic housing of a cable connector, which is provided with a connecting device for a cable 135, which in the exemplary embodiment is a plastic-insulated, single-core cable.
  • a socket 124 is provided which engages in an opening 127 of the wall 125 of the encapsulation of the gas-insulated switch and closes this opening in a gas-tight manner.
  • the metallic housing 116 of the plug has a T-like shape.
  • the two parts 136 and 137 of the housing 116 which form the two arms extending in opposite directions, are designed as a tube piece with an annular flange for connection to the housing 110 or as a bell-like cap, which has an insertion opening for the wire 135 is provided.
  • a short cylindrical section extends at right angles to these two parts 136 and 137, followed by a conically widening section and then again by a cylindrical section. Therefore, the housing 116 can overlap the flange of the cup-shaped housing 126 of the socket 124 as well as the screws 128 and can rest against the outside of the wall 125 of the encapsulation when the plug is fully inserted into the socket 124.
  • Claws 132 lying against the outside of the conical housing section position the connector in this position in connection with the stud bolts 133 and nuts 134 arranged thereon and exert the required compressive force on it.
  • the rod 119 which penetrates a pressure body 123 and whose end section projecting over this pressure body forms the plug pin engaging in the socket body 131 of the socket or carries a contact sleeve 121 which, if necessary, can in turn carry a multi-line contact element.
  • the other end of the rod 119 carries a clamp body 138 of a screw clamp for connecting the wire 135.
  • the rod 119 can be mechanically fixed and electrical with this clamp body 138, the longitudinal axis of which lies in the longitudinal axis of the two parts 136 and 137 conductive connected or, as in the embodiment, be integrally formed.
  • the terminal body 130 is with a blind hole which is open towards part 137 of the housing 116 and lies in the terminal body length:>, into which the stripped end 135 'of the wire 135 is inserted.
  • the contact piece 120 which is contacted by the mating contact piece 114, is electrically conductively connected to the terminal body 138 via a connecting line 140.
  • the connecting line 140 is embedded up to the pressure body 123 in the insulating body 117, which lies against the inner wall of the parts 136 and 137 and over part of the length of the housing part surrounding the rod 119.
  • the section of the insulating body 117 located in part 137 of the housing is provided with a channel which is aligned with the blind hole of the terminal body 130 and in which the insulating body 117, which, as in the exemplary embodiment, consists of silicone rubber the wire insulation is present.
  • a field control body 141 embedded in the insulating body 117 contacts the guide surface lying between the wire insulation and the jacket.
  • an outwardly conically widening channel is aligned in the insulating body 117, into which a correspondingly conically shaped sealing plug 142 is inserted, which here forms an electrically sealed closure.
  • the sealing plug can be removed if access to the clamping screw 139 or, for example, the application of a test voltage to the clamp body 130 is desired.
  • the surge arrester is combined with a cable plug, no additional socket is required here. If the plug is not to be designed as an angled plug, the blind hole in the clamp body 138 could be aligned with the longitudinal axis of the rod 119. The clamping screw could then penetrate into the clamp body 138 from the side opposite the connecting line 140.
  • the plug which is structurally combined with the surge arrester can also be inserted into a socket which is intended for receiving a cable plug.
  • the connection of the cable to the plug is not made directly, but by means of a cable plug which can be inserted into a socket designated as a whole with 243. If there is no cable connection to the conductor 201 which is to be secured by means of the surge arrester and is located in the interior of the encapsulation, then the socket 243 is closed in an electrically tight manner by means of a blind plug.
  • the housing 216 of the angled plug, to which the housing 210, in which the arrester body 202 is located, is detachably connected differs from the housing 116 of the second exemplary embodiment only in that the part which is arranged coaxially with the housing 210 but points away therefrom 237 as the part 236, to which the housing 210 is screwed, is designed as a tube piece with a flange at its free end.
  • the cup-shaped housing 244, made of electrically insulating material, of the socket 243 is inserted in the part 237 of the housing 216.
  • an angled section of the rod 219 is tightly guided in the center thereof, which at its end protruding from the housing 216 forms the plug pin of the plug or, as in the exemplary embodiment, carries a contact sleeve 221 on which a multi-line contact element is arranged can.
  • the angled section of the rod 219 penetrating into the housing 244 is mechanically fixed and electrically conductive to a socket body 245 of the socket 243.
  • the contact piece 220 which connects to the arrester body 202 is connected and is contacted by the mating contact piece 214.
  • an insulating body 217 made of an elastic material, in the exemplary embodiment silicone rubber, in the housing 216 of the plug, which not only bears on the parts located in the housing 216, but also on the inside of the housing 216 , with the exception of that end section which, as in the exemplary embodiment according to FIG. 1, engages over the open end of the socket 224 which forms the passage through the wall 225 of the encapsulation.
  • the housing 310 containing the arrester body 302 is flanged to the metallic housing 316 of a plug.
  • the housing 316 of the plug to be inserted into the socket 324 is provided with two sockets 343 and 346, both of which have the same design in the exemplary embodiment, but could also have a different design.
  • the design of these two sockets 343 and 346 corresponds to the design of the socket 243 of the third embodiment. Therefore, reference is made to the statements made regarding the socket 243.
  • the socket 346 the plug which is structurally combined with the housing 316 is inserted.
  • a cable plug can be inserted into the other socket 343.
  • the embodiment according to FIG. 3 can thus be used like that according to FIG. 2 if there is no free socket in the wall of the encapsulation. It therefore differs from the exemplary embodiment according to FIG. 2 essentially only in the different type of connection between the arrester body and the plug which can be inserted into the socket 324 serving as a bushing. For further details, reference is therefore made to the explanations for the exemplary embodiment according to FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (12)

1. Dérivateur de surtension comportant un corps de dérivateur (102; 202, 303) constitué d'au moins un oxyde métallique dans un boîtier (110; 210; 310) qui est réuni, par construction, avec une partie d'une liaison par fiche qui peut s'enficher, de l'extérieur, dans une partie correspondante (124; 224; 324) de la liaison par fiche prévue à une traversée du blindage (125; 225; 325) d'une installation de commutation, et dans lequel, lorsque la liaison par fiche est réalisée, le corps du dérivateur (102; 202; 302) est réuni, par l'intermédiaire de la liaison par fiche, avec un conducteur (201) qui se trouve à l'intérieur du blindage (125; 225; 325), caractérisé en ce que
a) aussi bien le boîtier (110; 210; 310) du corps de dérivateur (102; 202; 302), constitué d'oxyde de zinc, que celui (116; 216; 316) de la première partie de la liaison par fiche sont en métal,
b) lorsque la liaison par fiche est réalisée, le boîtier (116; 216; 316) de la première partie de la liaison par fiche et, par l'intermédiaire de ce boîtier, celui (110; 210; 310) du corps de dérivateur (102; 202; 302) sont reliés, par liaison électriquement conductrice, au blindage (125; 225; 325) qui se trouve au potentiel de terre et
c) la première partie de la liaison par fiche est munie d un dispositif de raccordement (138; 243; 343) pour un câble.
2. Dérivateur de surtension selon la revendication 1, caractérisé en ce que le boîtier (110; 210; 310) contenant le corps de dérivateur (102; 202; 302) est formé par une partie du boîtier (116; 216; 316) de la liaison par fiche.
3. Dérivateur de surtension selon la revendication 1 ou 2, caractérisé par une liaison amovible qui est située sur le conducteur, entre le corps de dérivateur (102; 202; 302) et un corps de contact enfichable (121; 221) de la liaison par fiche et qui présente une pièce de contact (120; 220), bloquée par un corps isolant (117; 217), de la liaison par fiche, ainsi qu'une contre-pièce de contact (114; 214) que la force d'un ressort peut appuyer contre cette pièce de contact et qui est en liaison permanente avec le corps de dérivateur (102; 202; 302).
4. Dérivateur de surtension selon l'une des revendications 1 à 3, caractérisé en ce que son boîtier (110; 210; 310) a la forme d'un boisseau qui est ouvert en direction du boîtier (116; 216; 316) de la liaison par fiche et qui est relié, de façon amovible, avec une pièce en forme de tubulure (136; 236) du boîtier de la liaison par fiche.
- 5. Dérivateur de surtension selon la revendication 4, caractérisé par un tube isolant qui entoure, à une certaine distance, le corps de dérivateur (102; 202; 302) et qui est obturé à l'une de ses extrémités au moyen d'un couvercle métallique contre lequel s'appuie intérieurement, de façon électriquement conductrice, le corps de dérivateur (102; 202; 302) et dont la face extérieure est fixée, de façon électriquement conductrice, contre la face intérieure du fond du boîtier en forme de boisseau (110; 210; 310).
6. Dérivateur de surtension selon la revendication 5, caractérisé en ce que l'autre extrémité du tube isolant est obturée, avec étanchéité au gaz, au moyen d'un second couvercle contre lequel s'appuie l'une des extrémités d'un ressort précontraint qui, par son autre extrémité, pousse la contre-pièce de contact (114; 214) contre la pièce de contact (120; 220).
7. Dérivateur de surtension selon l'une des revendications 4 à 6, caractérisé par une vanne de remplissage insérée dans le fond du boîtier (110; 210; 310) en forme de boisseau et dans le couvercle qui s'appuie contre ce fond.
8. Dérivateur de surtension selon l'une des revendications 4 à 7, caractérisé par un dispositif de décharge de surpression, avec indicateur, inséré dans le fond du boîtier (110; 210; 310) en forme de boisseau et dans le couvercle qui s'appuie contre lui.
9. Dérivateur de surtension selon l'une des revendications 1 à 8, caractérisé en ce que le dispositif de raccordement (243; 343) pour un câble est conçu sous forme de connecteur femelle pour recevoir un connecteur mâle de câble.
10. Dérivateur de surtension selon l'une des revendications 1 à 9, caractérisé en ce que la liaison par fiche est conçue sous forme de connecteur mâle angulaire.
11. Dérivateur de surtension selon l'une des revendications 4 à 10, caractérisé en ce que l'axe longitudinal du boîtier (110; 210) en forme de boisseau est disposé à angle droit par rapport à l'axe longitudinal d'une broche (119; 121; 219; 221) enfichable dans la partie correspondante de la liaison par fiche.
12. Dérivateur de surtension selon l'une des revendications 1 à 11, caractérisé en ce que la partie enfichable dans la partie correspondante de la liaison par fiche présente deux connecteurs femelles (343; 346) pour recevoir un connecteur mâle de câble ou un connecteur mâle réuni, par construction, avec le boîtier (31) du corps de dérivateur (302) et relié électriquement avec ce dernier.
EP85103827A 1984-03-30 1985-03-29 Dérivateur de surtensions Expired EP0163053B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3411735 1984-03-30
DE19843411735 DE3411735A1 (de) 1984-03-30 1984-03-30 Ueberspannungsableiter

Publications (2)

Publication Number Publication Date
EP0163053A1 EP0163053A1 (fr) 1985-12-04
EP0163053B1 true EP0163053B1 (fr) 1989-01-04

Family

ID=6232047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103827A Expired EP0163053B1 (fr) 1984-03-30 1985-03-29 Dérivateur de surtensions

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EP (1) EP0163053B1 (fr)
DE (2) DE3411735A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8531511U1 (de) * 1985-11-05 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter mit Steckanschlußteil für Mittelspannungsschaltanlagen
JPS6369409A (ja) * 1986-09-09 1988-03-29 株式会社東芝 避雷装置
DE3815666A1 (de) * 1987-09-15 1989-03-30 Pfisterer Elektrotech Karl Steckbarer ueberspannungsableiter
FR2629263A1 (fr) * 1988-03-25 1989-09-29 Transfix Soc Nouv Dispositif de protection pour appareil electrique a moyenne tension

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2247999A1 (de) * 1972-09-27 1974-04-04 Siemens Ag Metallgekapselte hochspannungsanlage mit einem ueberspannungsableiter
FR2236253A1 (fr) * 1973-07-03 1975-01-31 Siemens Ag

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915534A (en) * 1967-08-15 1975-10-28 Joslyn Mfg & Supply Co Grounded surface distribution apparatus
US3649875A (en) * 1969-08-01 1972-03-14 Mitsubishi Electric Corp Lightning arrester
US3727108A (en) * 1972-02-15 1973-04-10 Kearney National Inc Surge arrester
US3863111A (en) * 1973-06-29 1975-01-28 Gen Electric Polycrystalline varistor surge protective device for high frequency applications
US4161012A (en) * 1977-03-02 1979-07-10 Joslyn Mfg. And Supply Co. High voltage protection apparatus
US4145729A (en) * 1978-02-27 1979-03-20 Gilbert Engineering Company, Inc. Surge protector assembly
DE2822773A1 (de) * 1978-05-24 1979-11-29 Siemens Ag Steckverbindung fuer gekapselte mittelspannungsanlagen
US4352139A (en) * 1980-02-04 1982-09-28 Rte Corporation Flexible connector for H.V. arrester
JPS6126449B2 (fr) * 1980-03-19 1986-06-20 Sandvik Ab
JPS57206608A (en) * 1981-05-29 1982-12-18 Mochida Pharmaceut Co Ltd Production of gamma-globulin for intravenous injection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2247999A1 (de) * 1972-09-27 1974-04-04 Siemens Ag Metallgekapselte hochspannungsanlage mit einem ueberspannungsableiter
FR2236253A1 (fr) * 1973-07-03 1975-01-31 Siemens Ag

Also Published As

Publication number Publication date
EP0163053A1 (fr) 1985-12-04
DE3567333D1 (en) 1989-02-09
DE3411735A1 (de) 1985-10-03

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