EP0446837A1 - Transformateur traversant - Google Patents

Transformateur traversant Download PDF

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Publication number
EP0446837A1
EP0446837A1 EP91103691A EP91103691A EP0446837A1 EP 0446837 A1 EP0446837 A1 EP 0446837A1 EP 91103691 A EP91103691 A EP 91103691A EP 91103691 A EP91103691 A EP 91103691A EP 0446837 A1 EP0446837 A1 EP 0446837A1
Authority
EP
European Patent Office
Prior art keywords
bolt
feedthrough
feed
insulating body
winding
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.)
Withdrawn
Application number
EP91103691A
Other languages
German (de)
English (en)
Inventor
Wilhelm KRÄMER
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
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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 Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Publication of EP0446837A1 publication Critical patent/EP0446837A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H01F2038/305—Constructions with toroidal magnetic core

Definitions

  • the invention relates to a bushing converter with a rod-shaped bushing bolt made of electrically conductive metal as the primary winding and a measuring winding arranged in a ring around the bushing bolt as the secondary winding.
  • Such a feedthrough converter is known from L. Merz, Basic Course in Measurement Technology, Part I, Measuring Electrical Quantities, R. Oldenbourg Verlag, Kunststoff, Vienna 1968, pages 158 to 160.
  • a current transformer is shown in which an iron core is arranged between the primary and secondary windings. It can be a rod converter, a rod converter with a porcelain cover or a porcelain rod converter.
  • the invention is based on the object of specifying a feedthrough converter of the type mentioned at the outset, which is used for the isolated implementation of a live, potential-carrying electrical connection from an electrical device, in particular from a converter module is suitable, and at the same time detects and outputs an electrical measured value, preferably the rate of current rise, a gas and liquid-tight seal between the electrical device and the feedthrough converter should be ensured.
  • both the bushing pin and the measuring winding are embedded on all sides in an insulating body made of cast resin, wherein. Breakthroughs are provided for the electrical connection of the measuring winding and for the electrical connection of both ends of the feedthrough bolt and that the insulating body has a sealable flat bottom part at the location of the passage of one end of the feedthrough bolt.
  • the advantages that can be achieved with the invention are, in particular, that the proposed feedthrough converter is relatively simple and inexpensive to manufacture using well-known cast resin techniques, that it is very robust, in particular vibration-resistant, and that its dimensions are very compact.
  • a lateral section through a bushing converter is shown. It is indicated that the feedthrough converter 1 is placed, for example, on a housing wall 2 of a converter module and partially penetrates a hole in this housing wall.
  • the bushing transducer 1 has an insulating body 3 made of a casting resin (for example epoxy resin) and is provided with annular ribs 4 to increase the dielectric strength and to extend the electrical creepage distance.
  • the annular ribs 4 can be interrupted by grooves 35 in order to allow condensate to drain when the bushing converter 1 is installed vertically (see FIG. 2).
  • a plurality of grooves are expediently provided in order to be able to mount the bushing converter independently of the position.
  • In the center of the insulating body 3 there is a rod-shaped bushing pin 5 made of an electrically conductive metal.
  • the bushing pin 5 is provided with a constriction 14 in its central part.
  • the insulating body 3 engages in this constriction or completely surrounds it, it is ensured that lead-through bolts 5 and insulating body 3 are firmly connected to one another.
  • the end of the bushing pin projecting over the ribs 4 of the insulating body 3 is provided with a recess 37.
  • a measuring winding 6 is arranged around the central part of the feed-through bolt 5, for example for detecting rise rates of the current conducted through the feed-through bolt 5.
  • the measuring winding 6 is wound around a winding carrier 7 arranged in a ring around the bushing pin 5 and has two electrical connecting pins 8.
  • the tube wall of the insulating body 3 is provided with a total of four fastening bores 9, in each of which a metallic support sleeve (tube sleeve) 10 is inserted, which for the most part is the one carried out by, with the
  • the housing wall (see blind hole 26) connected fastening screws 25 absorb the applied mechanical tension so that no impermissibly high forces get into the insulating body 3.
  • Three sealing rings 11, 12, 13 are provided for sealing the bushing transducer 1 against the housing interior 15, which is sealed off from the housing wall 2 and which contains, for example, oil or another liquid or gas (e.g. for cooling purposes).
  • a first sealing ring 11 is inserted in an annular groove in the flat bottom part 16 of the insulating body 3 and seals the insulating body 3 against the interior 15 of the housing.
  • a second sealing ring 12 is inserted into an annular groove at the end of the bushing bolt 5 located in the housing interior 15 and seals the connection between the bushing bolt 5 and the insulating body 3 against the housing interior 15.
  • a third sealing ring 13 is inserted into an annular groove on the section of the bushing bolt facing away from the housing interior 15 and also serves to additionally seal the bushing bolts 5 / insulating body 3 connection.
  • connection sockets 17 are provided on the connecting pins 8 on the outer wall of the insulating body 3.
  • electrical contacts from External connections not shown, engage (for example by means of threaded screw connections), as a result of which an electrical connection with the connecting pins 8 is achieved.
  • a bulge 18 which is curved around the connecting sockets 17 is integrally formed on the lateral outer wall of the insulating body 3, whereby a connecting space 19 is formed.
  • the bushing pin 5 is provided with a continuous central bore 20.
  • the section of the lead-through bolt 5 facing away from the housing interior 15 has, for example, a hexagonal outer wall 21 and is preferably contacted electrically via an external roller contact.
  • the end of the bushing bolt 5 located in the interior 15 of the housing is provided with a toothed profile bore 24.
  • a seal 23 located at the transition from the toothed profile bore 24 to the central bore 20 seals the interior 15 of the housing (see FIG. 3).
  • FIG. 2 shows a top view of a feedthrough converter 1.
  • the insulating body 3 with ribs 4, four fastening bores 9 and support sleeves 10 can be seen.
  • a fastening screw 25 reaching through the fastening bore 9 is indicated.
  • the bulge 18 forming the connection space 19 covers the connection sockets 17 connected to the connection pins 8.
  • the hexagonal outer wall 21 and the central bore 20 of the bushing bolt 5 can be seen.
  • the grooves 35 suitable for the condensate drain are indicated by dashed lines. The grooves are to be arranged in such a way that the necessary creepage distance between bushing pin 5 and fastening screw 25 is retained.
  • connection space 19 shows a side view of a feedthrough converter 1.
  • the bulge 18 of the insulating body 3 forming the connection space 19 can be seen with connection sockets 17 and connection pins 8.
  • the support sleeves 10 protrude slightly beyond the frame wall of the insulating body 3.
  • a toothed profile nut 22 is inserted into the toothed profile bore 24 of the bushing bolt 5 and presses laterally against the seal 23, as a result of which the central bore 20 is sealed off from the outside.
  • the toothed profile nut 22 engages through a bore in an electrical connecting bar 27 (busbar, flexible band) and presses this connecting bar 27 in an electrically contacting manner against the bushing pin 5 by screwing a screw pin 36 inserted through the central hole 20 into the toothed profile nut 22.
  • the recess 37 receives the screw head of the screw bolt 36. Since the outer tooth profile of the nut 22 engages in the tooth profile of the bore 24 (serration), the tooth profile nut 22 and the connecting rail 27 can advantageously not twist during the screwing of the bolt 36.
  • the screw bolt 36 can at the same time hold a roller contact that serves for external electrical contacting.
  • the roller contacts are expediently inserted into slots 38 (see FIG. 1).
  • the further end of the bushing bolt 5 with the hexagonal outer wall 21 and the sealing ring 13 can also be seen.
  • the annular winding carrier 7 has two bores 29 for receiving the connection pins 8 for the measuring winding. On each side of each bore 29, webs 28 are formed for the additional mechanical mounting of the connecting pins 8. There is a pocket 30 between the two bores 29 arranged for receiving wiring components for the measuring winding 6. A gap 31 leads from pocket 30 to each blind hole 26, which leads a connecting wire from a wiring component to connecting pin 8.
  • FIG. 5 shows a top view of a winding support.
  • the two connecting pins 8 with connecting sockets 17 inserted into the bores 29 of the winding support 7 can be seen.
  • Two wiring components 32 resistor, choke are arranged in the pocket 30 arranged between the two bores 29 and are connected to the connection pins 8 via connecting wires.
  • the bushing 33 differs from the bushing converter 1 essentially in that the measuring winding including electrical connections is omitted.
  • the rest of the structure with an insulating body including fastening bores 9 and support sleeves 10, bushing bolts 5 with a central bore 20, hexagonal outer wall 21, constriction 14 and toothed profile bore 24, sealing rings 11, 12, 13 and seal 23 is as described in FIG. 1. Due to the overall narrower design of the bushing 33 compared to the bushing transducer 1, the ribs 4 can be replaced by a single annular recess 34.
  • FIG. 7 shows a top view of an implementation.
  • the insulating body 3 with an annular recess 34 and fastening bores 9 with support sleeves 10 can be seen.
  • the bushing pin 5 is shown with a central bore 20 and a hexagonal outer wall 21.
  • the bushing 33 is used in particular when, for example, a separate external transducer is used and the only task is to create an electrically insulated bushing - for example through the housing wall of a converter module.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Insulators (AREA)
EP91103691A 1990-03-16 1991-03-11 Transformateur traversant Withdrawn EP0446837A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904008421 DE4008421C2 (de) 1990-03-16 1990-03-16 Durchführung
DE4008421 1990-03-16

Publications (1)

Publication Number Publication Date
EP0446837A1 true EP0446837A1 (fr) 1991-09-18

Family

ID=6402349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103691A Withdrawn EP0446837A1 (fr) 1990-03-16 1991-03-11 Transformateur traversant

Country Status (3)

Country Link
EP (1) EP0446837A1 (fr)
JP (1) JPH04219909A (fr)
DE (1) DE4008421C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4236378C1 (de) * 1992-10-28 1994-06-30 Schorch Gmbh Hochspannungstransformator
WO1999007047A1 (fr) * 1997-07-31 1999-02-11 Siemens Aktiengesellschaft Transducteur de traversee pour installation de distribution moyenne tension isolee par air, sous enveloppe metallique
FR2814275A1 (fr) * 2000-09-20 2002-03-22 Alstom Disjoncteur a isolation au gaz avec un transformateur de courant electronique integre
FR2830977A1 (fr) * 2001-10-12 2003-04-18 Transfix Toulon Soc Nouv Traversee electrique pour appareil de coupure moyenne tension integrant un dispositif permettant la mesure du courant et de la tension
US6987438B2 (en) 2001-07-17 2006-01-17 Siemens Aktiengesellschaft Bushing-type transformer for a switch gear unit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131259A1 (de) * 1991-09-17 1993-03-18 Tro Transformatoren Und Schalt Einrichtung zur herausfuehrung von messspannungen und/oder messstroemen
DE19828890A1 (de) * 1998-06-23 2000-02-03 Aeg Kondensatoren Und Wandler Stromwandler
DE10013072B4 (de) * 2000-03-17 2006-06-22 Aeg Niederspannungstechnik Gmbh & Co Kg Primärleiteranordnung für den Stromleiter einer elektromagnetischen Auslöseeinheit
JP5849617B2 (ja) * 2011-11-01 2016-01-27 株式会社明電舎 モールド変流器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581500A (en) * 1949-02-15 1952-01-08 Fargo Mfg Co Inc Transformer terminal connector
FR1283978A (fr) * 1960-12-29 1962-02-09 Acec Traversée pour appareils électriques
FR1369097A (fr) * 1963-09-05 1964-08-07 Siemens Ag Transformateur d'intensité pour appareillage à haute tension complètement isolé par un matériau synthétique et blindé
US3898406A (en) * 1973-12-03 1975-08-05 Allis Chalmers Interrupter-bushing
US3979549A (en) * 1972-09-25 1976-09-07 Rostone Corporation Composite of metal and thermoset plastic
EP0037367A1 (fr) * 1980-03-27 1981-10-07 Siemens Aktiengesellschaft Transformateur de mesure isolé par un gaz ou par un liquide
JPS57187919A (en) * 1981-05-14 1982-11-18 Mitsubishi Electric Corp Resin mold current transformer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1116512A (fr) * 1954-12-03 1956-05-08 Const Electr R S Perfectionnements apportés aux transformateurs d'intensité et aux montages comportant de tels transformateurs
DE2554143A1 (de) * 1975-11-28 1977-06-02 Siemens Ag Spannungswandler fuer hohe spannungen
DE2658291B2 (de) * 1976-12-22 1981-05-27 WEMA Kunststoff- und Gerätebau GmbH & Co KG, Herstellung und Vertrieb von Kunststoffteilen, 8052 Moosburg Durchführungsisolator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581500A (en) * 1949-02-15 1952-01-08 Fargo Mfg Co Inc Transformer terminal connector
FR1283978A (fr) * 1960-12-29 1962-02-09 Acec Traversée pour appareils électriques
FR1369097A (fr) * 1963-09-05 1964-08-07 Siemens Ag Transformateur d'intensité pour appareillage à haute tension complètement isolé par un matériau synthétique et blindé
US3979549A (en) * 1972-09-25 1976-09-07 Rostone Corporation Composite of metal and thermoset plastic
US3898406A (en) * 1973-12-03 1975-08-05 Allis Chalmers Interrupter-bushing
EP0037367A1 (fr) * 1980-03-27 1981-10-07 Siemens Aktiengesellschaft Transformateur de mesure isolé par un gaz ou par un liquide
JPS57187919A (en) * 1981-05-14 1982-11-18 Mitsubishi Electric Corp Resin mold current transformer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr 36 (E-158)[1181], 15. Februar 1983; & JP-A-57 187 919 (MITSUBISHI DENKI) 18-11-1982 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4236378C1 (de) * 1992-10-28 1994-06-30 Schorch Gmbh Hochspannungstransformator
WO1999007047A1 (fr) * 1997-07-31 1999-02-11 Siemens Aktiengesellschaft Transducteur de traversee pour installation de distribution moyenne tension isolee par air, sous enveloppe metallique
FR2814275A1 (fr) * 2000-09-20 2002-03-22 Alstom Disjoncteur a isolation au gaz avec un transformateur de courant electronique integre
EP1191564A1 (fr) * 2000-09-20 2002-03-27 Alstom Disjoncteur à isolation au gaz avec un transformateur de courant électronique intégré
US6414257B1 (en) 2000-09-20 2002-07-02 Alstom Gas-insulated circuit-breaker with an integrated electronic current transformer
US6987438B2 (en) 2001-07-17 2006-01-17 Siemens Aktiengesellschaft Bushing-type transformer for a switch gear unit
FR2830977A1 (fr) * 2001-10-12 2003-04-18 Transfix Toulon Soc Nouv Traversee electrique pour appareil de coupure moyenne tension integrant un dispositif permettant la mesure du courant et de la tension

Also Published As

Publication number Publication date
DE4008421C2 (de) 1993-10-07
JPH04219909A (ja) 1992-08-11
DE4008421A1 (de) 1991-09-19

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