EP0159515B1 - Connection device with a fuse for enclosed medium-voltage switch gear - Google Patents

Connection device with a fuse for enclosed medium-voltage switch gear Download PDF

Info

Publication number
EP0159515B1
EP0159515B1 EP85102868A EP85102868A EP0159515B1 EP 0159515 B1 EP0159515 B1 EP 0159515B1 EP 85102868 A EP85102868 A EP 85102868A EP 85102868 A EP85102868 A EP 85102868A EP 0159515 B1 EP0159515 B1 EP 0159515B1
Authority
EP
European Patent Office
Prior art keywords
cartridge
connection
fuse
cable conductor
cable
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
EP85102868A
Other languages
German (de)
French (fr)
Other versions
EP0159515A3 (en
EP0159515A2 (en
Inventor
Dietrich Mooz
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.)
Felten and Guilleaume Energietechnik AG
Original Assignee
Felten and Guilleaume Energietechnik 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 Felten and Guilleaume Energietechnik AG filed Critical Felten and Guilleaume Energietechnik AG
Priority to AT85102868T priority Critical patent/ATE31229T1/en
Publication of EP0159515A2 publication Critical patent/EP0159515A2/en
Publication of EP0159515A3 publication Critical patent/EP0159515A3/en
Application granted granted Critical
Publication of EP0159515B1 publication Critical patent/EP0159515B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof

Definitions

  • the invention relates to a fuse connection device for encapsulated medium-voltage switchgear in accordance with the preamble of claim 1.
  • HV fuse high-voltage, high-performance fuse cartridge
  • two connecting parts are provided, in which the HH fuse cartridge is inserted.
  • the electrical connection of the HV HRC cartridge to the switchgear on the one hand and to a connection cable on the other hand is made by means of contact elements in the connection parts.
  • the design of the connection parts means that replacing the HV HRC cartridge is problematic and can also impair the required dielectric strength.
  • the invention is therefore based on the object of improving the fuse connection device of the type described above in such a way that the insertion and replacement of the HR fuse cartridge are simplified and the dielectric strength is increased.
  • connection parts make installation considerably easier when inserting and replacing the HV backup cartridge.
  • dispensing with external conductive coverings on the connection parts which are grounded at a suitable point, and by dispensing with corresponding conductive coverings inside the connection parts to avoid high field strengths, the production of the connection parts is considerably simplified.
  • the required dielectric strength is achieved by a seal between the connection parts and a plastic tube connecting the connection parts on the corresponding sealing surface.
  • FIG. 1 An embodiment of the invention is shown in a drawing and is explained in more detail below.
  • the figure shows a fuse connection device in side view, in section.
  • a bushing 3 is used in the wall 2 of a switchgear 1.
  • the implementation has the task of supplying a cable conductor 4 from the interior of the switchgear to an HV HRC cartridge 7.
  • a connection part 5 serves as the connection part between the bushing and the fuse cartridge.
  • This connection part has a conical opening on the system side, which allows the connection part to be plugged onto the bushing, which has a corresponding outer cone in the connection area with the connection part.
  • the connector has an interior 12 which has three openings 13, 17 and 25 to the outside.
  • the opening 13 is designed conically on the inside such that the outer cone 14 of the bushing 3 can be inserted into this opening.
  • the cable conductor 4 in the bushing is connected at the end inside the interior with a tab 20 which is supported on the inner edges of the connecting part and is then fixed with a screw connection.
  • the tab serves the connection between the cable conductor and a contact cap 19 of the HV backup cartridge.
  • the second opening 17 is used to receive a removable plug 18. Through this opening, the condition of the release pin 21 can be viewed, i. that is, it can easily be checked at any time whether the fuse has responded.
  • the third opening 25 is used to hold the HV backup cartridge.
  • the diameter of the opening 25 is much larger than the diameter of the HR fuse cartridge.
  • the contact between the contact tab and the contact cap is made by a contact spring 26 which is screwed to the contact tab.
  • the connector 10 and 11, not shown, is designed in the same way as the connector 5, so that a detailed description is omitted.
  • the connection between the connecting parts 5 and 10 or 11 is made by a plastic tube 27.
  • the voltage-tight sealing takes place between the connection parts 5, 10 or 11 and the plastic pipe on a common sealing surface 28.

Abstract

1. A connection device with a fuse for enclosed medium voltage switchgear (1), having at least one duct (3) set in the wall (2) of the switchgear (1) for a free cable conductor (4) and a connection member (5) which is mounted on the duct (3) and has a recess (12), into which one end (19) of an HH-cartridge (7) is inserted and which engages with its other end in the recess of an additional connection member connected to one end of the cable, and that the ends of the HH-cartridge are connected by means of contact elements to the free cable conductor and the cable end, characterized in that the HH-cartridge (7) is inserted into the connection members (5) repectively through an opening (25) - the diameter of which is substantially larger than the diameter of the HH-cartridge (7) - and held inside the connection members by a respective contact spring (26), which is connected on one side to the contact strap (20) screwed to the free cable conductor (4) of the switchgear (1) and on the other side to the cable conductor of the connected cable end (9), and that the HH-cartridge (7) is surrounded with clearance by a plastics tube (27), which is pushed on to the rubber elastic connection members (5) and sealed on the corresponding surfaces (28) of the tube (27) and connection members (5).

Description

Die Erfindung bezieht sich auf eine Sicherungsanschlußeinrichtung für gekapselte Mittelspannungsschaltanlagen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a fuse connection device for encapsulated medium-voltage switchgear in accordance with the preamble of claim 1.

Nach der EP-A-0110008 (Stand der Technik gemäss Art 54(3) EPÜ) wird die Kurzschlußsicherheit einer gekapselten Mitteispannungsschaltanlage durch den Einsatz einer Hochspannungs-Hochleistungs-Sicherungspatrone (HH-Sicherung) erreicht. Hierzu sind zwei Anschlußteile vorgesehen, in welche die HH-Sicherungspatrone eingesetzt ist. Die elektrische Verbindung der HH-Sicherungspatrone zur Schaltanlage einerseits und zu einem Anschlußkabel andererseits erfolgt mittels Kontaktelementen in den Anschlußteilen. Die Gestaltung der Anschlußteile bringt es mit sich, daß ein Auswechseln der HH-Sicherungspatrone problematisch ist und außerdem die erforderliche Spannungsfestigkeit beeinträchtigen kann.According to EP-A-0110008 (state of the art according to Art 54 (3) EPC), short-circuit protection of an encapsulated medium-voltage switchgear is achieved by using a high-voltage, high-performance fuse cartridge (HV fuse). For this purpose, two connecting parts are provided, in which the HH fuse cartridge is inserted. The electrical connection of the HV HRC cartridge to the switchgear on the one hand and to a connection cable on the other hand is made by means of contact elements in the connection parts. The design of the connection parts means that replacing the HV HRC cartridge is problematic and can also impair the required dielectric strength.

Der Erfindung liegt daher die Aufgabe zugrunde, die Sicherungsanschlußeinrichtung der zuvor geschilderten Art dahingehend zu verbessern, daß das Einsetzen und Auswechseln der HH-Sicherungspatrone vereinfacht und die Spannungsfestigkeit erhöht werden.The invention is therefore based on the object of improving the fuse connection device of the type described above in such a way that the insertion and replacement of the HR fuse cartridge are simplified and the dielectric strength is increased.

Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 angegebenen konstruktiven Maßnahmen gelöst.This object is achieved by the design measures specified in the characterizing part of claim 1.

Die mit der Erfindung erzielten Vorteile bestehen darin, daß die erweiterten Öffnungen in den Anschlußteilen eine erhebliche Montageerleichterung beim Einsetzen und Auswechseln der HH-Sicherungspatrone mit sich bringen. - Durch den Verzicht von äußeren leitfähigen Belägen auf den Anschlußteilen, die an geeigneter Stelle geerdet sind, und den Verzicht von entsprechenden leitenden Belägen im Inneren der Anschlußteile zur Vermeidung von hohen Feldstärken wird die Herstellung der Anschlußteile wesentlich vereinfacht. Die erforderliche Spannungsfestigkeit wird durch eine Abdichtung zwischen den Anschlußteilen und einem die Anschlußteile verbindenden Kunststoffrohr an der korrespondierenden Dichtungsfläche erzielt.The advantages achieved by the invention are that the widened openings in the connecting parts make installation considerably easier when inserting and replacing the HV backup cartridge. - By dispensing with external conductive coverings on the connection parts, which are grounded at a suitable point, and by dispensing with corresponding conductive coverings inside the connection parts to avoid high field strengths, the production of the connection parts is considerably simplified. The required dielectric strength is achieved by a seal between the connection parts and a plastic tube connecting the connection parts on the corresponding sealing surface.

Ein Ausführungsbeispiel der Erfindung ist in einer Zeichnung dargestellt und wird im Folgenden näher erläutert. Es zeigt die Figur eine Sicherungsanschlußeinrichtung in Seitenansicht, im Schnitt.An embodiment of the invention is shown in a drawing and is explained in more detail below. The figure shows a fuse connection device in side view, in section.

Nach der Figur ist in der-Wand 2 einer Schaltanlage 1 eine Durchführung 3 eingesetzt. Die Durchführung hat die Aufgabe, einen Kabelleiter 4 aus dem Inneren der Schaltanlage einer HH-Sicherungspatrone 7 zuzuführen. Als Anschlußteil zwischen der Durchführung und der Sicherungspatrone dient ein Anschlußteil 5. Dieses Anschlußteil besitzt zur Anlagenseite eine konusförmige Öffnung, die ein Aufstecken des Anschlußteils auf die Durchführung gestattet, die im Verbindungsbereich mit dem Anschlußteil einen entsprechenden Außenkonus aufweist. Das Anschlußteil besitzt einen Innenraum 12, der drei Öffnungen 13. 17 und 25 nach außen hin aufweist. Die Öffnung 13 ist innen konusförmig derart gestaltet, daß der Außenkonus 14 der Durchführung 3 in diese Öffnung einsteckbar ist.According to the figure, a bushing 3 is used in the wall 2 of a switchgear 1. The implementation has the task of supplying a cable conductor 4 from the interior of the switchgear to an HV HRC cartridge 7. A connection part 5 serves as the connection part between the bushing and the fuse cartridge. This connection part has a conical opening on the system side, which allows the connection part to be plugged onto the bushing, which has a corresponding outer cone in the connection area with the connection part. The connector has an interior 12 which has three openings 13, 17 and 25 to the outside. The opening 13 is designed conically on the inside such that the outer cone 14 of the bushing 3 can be inserted into this opening.

Um einen festen Sitz des Anschlußteils auf der Durchführung zu erreichen, ist der in der Durchführung befindliche Kabelleiter 4 am Ende innerhalb des Innenraumes mit einer Lasche 20 verbunden, die sich an den Innenkanten des Anschlußteils abstützt und anschließend mit einer Schraubverbindung festgesetzt ist. Die Lasche dient der Verbindung zwischen dem Kabelleiter und einer Kontaktkappe 19 der HH-Sicherungspatrone. Die zweite Öffnung 17 dient der Aufnahme eines herausnehmbaren Stopfens 18. Durch diese Öffnung kann der Zustand des Auslösestifts 21 in Augenschein genommen werden, d. h., es kann hier jederzeit leicht überprüft werden, ob die Sicherung angesprochen hat.In order to achieve a tight fit of the connecting part on the bushing, the cable conductor 4 in the bushing is connected at the end inside the interior with a tab 20 which is supported on the inner edges of the connecting part and is then fixed with a screw connection. The tab serves the connection between the cable conductor and a contact cap 19 of the HV backup cartridge. The second opening 17 is used to receive a removable plug 18. Through this opening, the condition of the release pin 21 can be viewed, i. that is, it can easily be checked at any time whether the fuse has responded.

Die dritte Öffnung 25 dient der Aufnahme der HH-Sicherungspatrone. Der Durchmesser der Öffnung 25 ist dabei wesentlich größer als der Durchmesser der HH-Sicherungspatrone. Der Kontakt zwischen der Kontaktlasche und der Kontaktkappe wird durch eine Kontaktfeder 26 hergestellt, die mit der Kontaktlasche verschraubt sind.The third opening 25 is used to hold the HV backup cartridge. The diameter of the opening 25 is much larger than the diameter of the HR fuse cartridge. The contact between the contact tab and the contact cap is made by a contact spring 26 which is screwed to the contact tab.

Das nicht dargestellte Anschlußteil 10 bzw. 11 ist in gleicher Weise ausgeführt wie das Anschlußteil 5, so daß auf eine nähere Beschreibung verzichtet wird. Die Verbindung zwischen den Anschlußteilen 5 und 10 bzw. 11 wird durch ein Kunststoffrohr 27 hergestellt. Die spannungsmä- ßige Abdichtung erfolgt dabei zwischen den Anschlußteilen 5, 10 bzw. 11 und dem Kunststoffrohr an einer gemeinsamen Dichtungsfläche 28.The connector 10 and 11, not shown, is designed in the same way as the connector 5, so that a detailed description is omitted. The connection between the connecting parts 5 and 10 or 11 is made by a plastic tube 27. The voltage-tight sealing takes place between the connection parts 5, 10 or 11 and the plastic pipe on a common sealing surface 28.

Claims (2)

1. A connection device with a fuse for enclosed medium voltage switchgear (1), having at least one duct (3) set in the wall (2) of the switchgear (1) for a free cable conductor (4) and a connection member (5) which is mounted on the duct (3) and has a recess (12), into which one end (19) of an HH-cartridge (7) is inserted and which engages with its other end in the recess of an additional connection member connected to one end of the cable, and that the ends of the HH-cartridge are connected by means of contact elements to the free cable conductor and the cable end, characterised in that the HH-cartridge (7) is inserted into the connection members (5) respectively through an opening (25) - the diameter of which is substantially larger than the diameter of the HH-cartridge (7) - and held inside the connection members by a respective contact spring (26), which is connected on one side to the contact strap (20) screwed to the free cable conductor (4) of the switchgear (1) and on the other side to the cable conductor of the connected cable end (9), and that the HH-cartridge (7) is surrounded with clearance by a plastics tube (27). which is pushed on to the rubber elastic connection members (5) and sealed on the corresponding surfaces (28) of the tube (27) and connection members (5).
2. A connection device with a fuse according to Claim 1, characterised in that the plastics tube (27) is made of transparent material.
EP85102868A 1984-04-21 1985-03-13 Connection device with a fuse for enclosed medium-voltage switch gear Expired EP0159515B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85102868T ATE31229T1 (en) 1984-04-21 1985-03-13 FUSE CONNECTION EQUIPMENT FOR ENCLOSED MEDIUM VOLTAGE SWITCHGEAR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843415047 DE3415047A1 (en) 1984-04-21 1984-04-21 FUSE CONNECTING DEVICE FOR ENCLOSED MEDIUM VOLTAGE SWITCHGEAR
DE3415047 1984-04-21

Publications (3)

Publication Number Publication Date
EP0159515A2 EP0159515A2 (en) 1985-10-30
EP0159515A3 EP0159515A3 (en) 1986-06-25
EP0159515B1 true EP0159515B1 (en) 1987-12-02

Family

ID=6234129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102868A Expired EP0159515B1 (en) 1984-04-21 1985-03-13 Connection device with a fuse for enclosed medium-voltage switch gear

Country Status (5)

Country Link
US (1) US5167540A (en)
EP (1) EP0159515B1 (en)
JP (1) JPS60235322A (en)
AT (1) ATE31229T1 (en)
DE (2) DE3415047A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612535C1 (en) * 1996-03-29 1997-10-16 Felten & Guilleaume Energie Fuse connection device for compact network stations

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187427A (en) * 1937-09-11 1940-01-16 Leslie H Middleton Dashboard fuse mounting
US2386060A (en) * 1942-10-29 1945-10-02 Gen Electric Fuse unit
US3377610A (en) * 1966-09-30 1968-04-09 Busch Plug for electrical cord
US3512118A (en) * 1968-02-02 1970-05-12 Westinghouse Electric Corp High voltage electrical connector
US4178061A (en) * 1977-02-15 1979-12-11 Ahroni Joseph M Fused electrical plug
DE2920153A1 (en) * 1979-05-18 1980-11-27 Krone Gmbh Medium voltage switching unit using insulating gas, or liq. - has fuse support housing with side outlets carrying caps forced off by gas pressure
FR2518304A2 (en) * 1981-10-29 1983-06-17 Alsthom Atlantique Sleeve for fuse link in medium tension switchgear - uses cylindrical bellows with end caps fitting over bushings to cover fuse link accessible by compressing bellows
DE3244424A1 (en) * 1982-12-01 1984-06-20 Felten & Guilleaume Energietechnik GmbH, 5000 Köln FUSE CONNECTING DEVICE FOR ENCLOSED MEDIUM VOLTAGE SYSTEMS

Also Published As

Publication number Publication date
JPH0564405B2 (en) 1993-09-14
EP0159515A3 (en) 1986-06-25
DE3415047A1 (en) 1985-10-31
ATE31229T1 (en) 1987-12-15
DE3415047C2 (en) 1991-02-28
EP0159515A2 (en) 1985-10-30
DE3561122D1 (en) 1988-01-14
JPS60235322A (en) 1985-11-22
US5167540A (en) 1992-12-01

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