EP0202496B1 - Gas blast switch - Google Patents

Gas blast switch Download PDF

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Publication number
EP0202496B1
EP0202496B1 EP86105620A EP86105620A EP0202496B1 EP 0202496 B1 EP0202496 B1 EP 0202496B1 EP 86105620 A EP86105620 A EP 86105620A EP 86105620 A EP86105620 A EP 86105620A EP 0202496 B1 EP0202496 B1 EP 0202496B1
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EP
European Patent Office
Prior art keywords
half shells
contact member
circuit breaker
axis
compressed gas
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
EP86105620A
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German (de)
French (fr)
Other versions
EP0202496A1 (en
Inventor
Imre Horvath
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0202496A1 publication Critical patent/EP0202496A1/en
Application granted granted Critical
Publication of EP0202496B1 publication Critical patent/EP0202496B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/025—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers

Definitions

  • the invention is based on a gas pressure switch according to the first part of claim 1.
  • Such a switch is described in EP-A-0 173 804.
  • the known switch has an insulating gas-filled housing with two contact pieces located inside the housing and movable along an axis relative to one another.
  • the power connections of this switch enter the interior of the housing diametrically to the axis and are guided there to the contact pieces transversely to the axis.
  • a secure current transfer from the power connection to the fixed contact piece is achieved by two half-shells forming the fixed contact piece and spaced apart from one another along a parting plane, and by two flat rails arranged parallel to one another and guided as a power connection to one of the two half-shells.
  • the invention as characterized in claim 1 solves the task of simplifying the gas pressure switch of the generic type while maintaining a safe current transfer from the power connection to the fixed contact piece.
  • the pressure gas switch according to the invention is characterized in that its contact system is simple in construction and can be exchanged without problems. At the same time, it is achieved in a simple manner that, regardless of the current to be conducted, there are always safe current transitions from the power connection to the fixed contact piece and from the fixed contact piece to the movable contact piece. Additional contact springs can therefore be extremely weak.
  • the compressed gas switch shown in FIG. 1 has a housing 1 filled with insulating gas, such as sulfur hexafluoride, at a pressure of a few bar.
  • insulating gas such as sulfur hexafluoride
  • bushings 2 and 3 are provided, through which a power connection 4 or 5 for a cylindrical contact piece 7 movable along an axis 6 or a hollow cylindrical fixed contact piece 8 is guided into the interior of the housing I. are.
  • the power connection 4 is connected to the movable contact piece 7 via a sliding contact (not shown), while the power connection 5 is directly connected to the fixed contact piece 8.
  • Both contact pieces 7, 8 are designed to be erosion-resistant and make contact with one another in the switch-on position inside a hollow insulating body 9 (left part of FIG. 1).
  • the movable contact piece 7 When switching off, the movable contact piece 7 is moved out of the fixed contact piece 8 located in the interior of the insulating material body 9 and a switching arc 10 burning inside the insulating material body 9 and thereby increasing the pressure of the insulating gas is drawn between the fixed 8 and moving contact piece 7 (right part of FIG . 1).
  • the fixed contact piece 8 is constructed from two parts which are designed as half-shells 11 and 12.
  • the two half-shells 11 and 12 are each supported on diametrically opposite sides on a compression spring 13 and 14, which in turn are supported in a cylindrical part of the insulating body 9 acting as a cage 15.
  • the two half-shells 11 and 12 are spaced apart from one another by a parting plane 16 running along the axis 6.
  • the half-shells 11, 12 are at a pressure predetermined by the compression springs 13, 14 with their material recesses 21, 22 delimiting parts on the power supply 5 and with the contact points 17, 18, 19, 20 supported on the movable contact piece 7.
  • compression springs 13, 14 are designed as leaf springs, as described in the previous exemplary embodiment, one ends of which in the area of the power connection 5 in points 23 and the other ends in the area of the contact points 17, 18, 19, 20 in points 24 on the outer sides of the half-shells 11 , 12 rest, differently acting contact forces can be achieved in a simple manner by forming support points 25 of the compression springs 13, 14 on the cage 15 at different distances from the support points 23 and 24, respectively.
  • the two contact points 17, 19 and 18, 20 are preferably symmetrical and each rotated by an angle a of 30 to 70 ° with respect to the parting plane 16 about the axis 6 on each of the two half-shells 11 and 12, respectively. If the angle ⁇ is selected to be comparatively small, for example approximately 40 °, then the comparatively large components acting parallel to the parting plane 16 cancel out the repulsive current forces caused by the current transfer from the half-shells 11 and 12 to the movable contact piece 7 and become vertical component of the repulsive current forces acting at the parting plane 16 can be comparatively small. For a given position of the half-shells 11, 12, with a comparatively low spring force of the compression springs 13 and 14, there will always be a safe two-line contact regardless of the strength of the current to be conducted or switched.
  • the current transfer from the power connection 5 to the half-shells 11 and 12 can take place in a corresponding manner through contact points 26, 27, 28, 29.
  • These contact points are constructed and arranged corresponding to the contact points 17, 18, 19, 20 with regard to the power connection 5.
  • these contact points also reduce the repulsive current forces that occur at the transition from the power connection 5 to the half-shells 11, 12, as a result of which the required spring forces of the compression springs 13, 14 are kept comparatively low even in the region of the end of the half-shells 11, 12 that has the current transition 5 can.

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  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

Bei der Erfindung wird ausgegangen von einem Druckgasschalter gemäss dem ersten Teil des Anspruchs 1.The invention is based on a gas pressure switch according to the first part of claim 1.

Ein solcher Schalter ist in der EP-A-0 173 804 beschrieben. Der bekannte Schalter weist ein isoliergasgefülltes Gehäuse mit zwei im Inneren des Gehäuses befindlichen und längs einer Achse relativ zueinander beweglichen Kontaktatücken auf. Zwecks Erzielung einer geringen Baulänge treten die Stromanschlüsse dieses Schalters diametral zur Achse ins Innere des Gehäuses ein und sind dort quer zur Achse an die Kontaktstücke geführt. Hierbei wird durch zwei das feststehende Kontaktstück bildende und längs einer Trennebene voneinander beabstandete Halbschalen sowie durch zwei parallel zueinander angeordnete und als Stromanschluss an jeweils eine der beiden Halbschalen geführte Flachschienen ein sicherer Stromübergang vom Stromanschluss auf das feststehende Kontaktstück erreicht.Such a switch is described in EP-A-0 173 804. The known switch has an insulating gas-filled housing with two contact pieces located inside the housing and movable along an axis relative to one another. In order to achieve a short overall length, the power connections of this switch enter the interior of the housing diametrically to the axis and are guided there to the contact pieces transversely to the axis. In this case, a secure current transfer from the power connection to the fixed contact piece is achieved by two half-shells forming the fixed contact piece and spaced apart from one another along a parting plane, and by two flat rails arranged parallel to one another and guided as a power connection to one of the two half-shells.

Die Erfindung wie sie im Anspruch 1 gekennzeichnet ist, löst die Aufgabe, den Druckgasschalter der gattungsgemässen Art unter Beibehaltung eines sicheren Stromüberganges vom Stromanschluss auf das feststehende Kontaktstück zu vereinfachen.The invention as characterized in claim 1 solves the task of simplifying the gas pressure switch of the generic type while maintaining a safe current transfer from the power connection to the fixed contact piece.

Der erfindungsgemässe Druckgasschalter zeichnet sich dadurch aus, dass sein Kontaktsystem einfach aufgebaut ist und sich problemlos auswechseln lässt. Zugleich wird in ,einfacher Weise erreicht, dass unabhängig vom zu führenden Strom stets sichere Stromübergänge vom Stromanschluss auf das feststehende Kontaktstück und vom feststehenden Kontaktstück auf das bewegliche Kontaktstück gegeben sind. Zusätzliche Kontaktfedern können daher äusserst schwach dimensioniert sein.The pressure gas switch according to the invention is characterized in that its contact system is simple in construction and can be exchanged without problems. At the same time, it is achieved in a simple manner that, regardless of the current to be conducted, there are always safe current transitions from the power connection to the fixed contact piece and from the fixed contact piece to the movable contact piece. Additional contact springs can therefore be extremely weak.

Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen 2 bis 7 angegeben.Advantageous developments of the invention are specified in the dependent claims 2 to 7.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below with reference to an embodiment shown in the drawing.

Hierbei zeigt:.

  • Fig. 1 eine Aufsicht auf einen Schnitt längs der Linie I-I von Fig. 2 durch ein Ausführungsbeispiel des erfindungsgemässen Druckgasschalters,
  • Fig. 2 eine Aufsicht auf einen Schnitt längs der Linie 11-11 von Fig. 1,
  • Fig. 3 eine Aufsicht auf einen Schnitt längs der Linie III-III von Fig. 2 durch das vergrössert dargestellte Ausführungsbeispiel des erfindungsgemässen Druckgasschalters, und
  • Fig. 4 eine Aufsicht auf einen Schnitt längs der Linie IV-IV von Fig. 3.
Here shows:
  • 1 is a plan view of a section along the line II of FIG. 2 through an embodiment of the pressure gas switch according to the invention,
  • 2 is a plan view of a section along the line 11-11 of Fig. 1,
  • Fig. 3 is a plan view of a section along the line III-III of Fig. 2 through the enlarged embodiment of the pressure gas switch according to the invention, and
  • 4 is a plan view of a section along the line IV-IV of FIG. 3rd

Der in Fig. 1 dargestellte Druckgasschalter weist ein mit Isoliergas, wie etwa Schwefelhexafluorid von einigen bar Druck gefülltes Gehäuse 1 auf. An einander gegenüberliegenden Seiten des Gehäuses 1 sind Durchführungen 2 bzw. 3 vorgesehen, durch welche jeweils ein Stromanschluss 4 bzw. 5 für ein längs einer Achse 6 bewegliches, zylinderförmiges Kontaktstück 7 bzw. ein hohlzylindrisch ausgebildetes, feststehendes Kontaktstück 8 ins Innere des Gehäuses I geführt sind. Der Stromanschluss 4 ist über einen nicht dargestellten Gleitkontakt mit dem beweglichen Kontaktstück 7, der Stromanschluss 5 hingegen unmittelbar mit dem feststehenden Kontaktstück 8 verbunden. Beide Kontaktstücke 7, 8 sind abbrandfest ausgebildet und kontaktieren einander in der Einschaltposition im Inneren eines hohl ausgebildeten Isolierstoffkörpers 9 (linker Teil von Fig. 1). Beim Ausschalten wird das bewegliche Kontaktstück 7 aus dem im Inneren des Isolierstoffkörpers 9 befindlichen, feststehenden Kontaktstück 8 gefahren und zwischen feststehendem 8 und beweglichem Kontaktstück 7 ein im Inneren des Isolierstoffkörpers 9 brennender und hierbei den Druck des Isoliergases erhöhender Schaltlichtbogen 10 gezogen (rechter Teil von Fig. 1).The compressed gas switch shown in FIG. 1 has a housing 1 filled with insulating gas, such as sulfur hexafluoride, at a pressure of a few bar. On opposite sides of the housing 1, bushings 2 and 3 are provided, through which a power connection 4 or 5 for a cylindrical contact piece 7 movable along an axis 6 or a hollow cylindrical fixed contact piece 8 is guided into the interior of the housing I. are. The power connection 4 is connected to the movable contact piece 7 via a sliding contact (not shown), while the power connection 5 is directly connected to the fixed contact piece 8. Both contact pieces 7, 8 are designed to be erosion-resistant and make contact with one another in the switch-on position inside a hollow insulating body 9 (left part of FIG. 1). When switching off, the movable contact piece 7 is moved out of the fixed contact piece 8 located in the interior of the insulating material body 9 and a switching arc 10 burning inside the insulating material body 9 and thereby increasing the pressure of the insulating gas is drawn between the fixed 8 and moving contact piece 7 (right part of FIG . 1).

Wie aus Fig. 2 ersichtlich, ist das feststehende Kontaktstück 8 aus zwei Teilen aufgebaut, welche als Halbschalen 11 und 12 ausgebildet sind. Die beiden Halbschalen 11 bzw. 12 sind an einander diametral gegenüberliegenden Seiten jeweils auf einer Druckfeder 13 bzw. 14 abgestützt, weiche ihrerseits in einem als Käfig 15 wirkenden zylinderförmigen Teil des Isolierstoffkörpers 9 abgestützt sind. Die beiden Halbschalen 11 und 12 sind voneinander durch eine längs der Achse 6 geführte Trennebene 16 beabstandet.As can be seen from FIG. 2, the fixed contact piece 8 is constructed from two parts which are designed as half-shells 11 and 12. The two half-shells 11 and 12 are each supported on diametrically opposite sides on a compression spring 13 and 14, which in turn are supported in a cylindrical part of the insulating body 9 acting as a cage 15. The two half-shells 11 and 12 are spaced apart from one another by a parting plane 16 running along the axis 6.

Aus den Fig. 3 und 4 ist ersichtlich, dass in die vorzugsweise aus Kupfer bestehenden Halbschalen 11 bzw. 12 je zwei radial nach innen gerichtete und längs der Achse 6 erstreckte, beim Einschalten vom beweglichen Kontaktstück 7 kontaktierte Kontaktstellen 17, 19 bzw. 18, 20 aus abbrandfestem Material, wie Wolframkupfer, eingesetzt sind, und dass der Stromanschluss 5 zylinderförmig ausgebildet und im wesentlichen senkrecht zur Achse 6 in der Trennebene 16 in Materialausnehmungen 21 und 22 des feststehenden Kontaktstückes 8 gelagert ist. Diese Materialausnehmungen 21, 22 befinden sich an den von den Kontaktstellen 17, 18, 19, 20 abgewandten Enden der Halbschalen 11, 12. In der Einschaltposition sind die Halbschalen 11, 12 mit einem durch die Druckfedern 13, 14 vorgegebenen Druck mit ihren die Materialausnehmungen 21, 22 begrenzenden Teilen auf der Stromzuführung 5 und mit den Kontaktstellen 17, 18, 19, 20 auf dem beweglichen Kontaktstück 7 abgestützt. Um die abstossenden Kräfte der Stromübergänge des Stromanschlusses 5 auf die Halbschalen 11 und 12 und der Halbschalen 11 und 12 auf das bewegliche Kontaktstück 7 zu kompensieren, empfiehlt es sich, die Längen der Halbschalen 11, 12 in Richtung der Achse 6 zwischen den Materialausnehmungen 21, 22 und den Kontaktstellen 17, 18, 19, 20 mindestens gleich dem 1- bis 1,5-fachen höchstens aber gleich dem 2- bis 2,5-fachen des mittleren Durchmessers der Halbschalen 11, 12 zu wählen. Es ist dann möglich, allein mit den Federkräften der Druckfedern 13, 14 für grosse und kleine Ströme ausreichende Kontaktkräfte zwischen dem Stromanschluss 5 und den Halbschalen 11, 12 sowie zwischen den Halbschalen 11, 12 und dem beweglichen Kontaktstück 7 zu erzielen.3 and 4 it can be seen that in the half-shells 11 and 12, which are preferably made of copper, each have two radially inwardly directed and along the axis 6, contact points 17, 19 and 18 contacted by the movable contact piece 7 when switched on. 20 made of erosion-resistant material, such as tungsten copper, and that the power connection 5 is cylindrical and is mounted essentially perpendicular to the axis 6 in the parting plane 16 in material recesses 21 and 22 of the fixed contact piece 8. These material recesses 21, 22 are located at the ends of the half-shells 11, 12 facing away from the contact points 17, 18, 19, 20. In the switched-on position, the half-shells 11, 12 are at a pressure predetermined by the compression springs 13, 14 with their material recesses 21, 22 delimiting parts on the power supply 5 and with the contact points 17, 18, 19, 20 supported on the movable contact piece 7. In order to compensate for the repulsive forces of the current transitions of the power connection 5 onto the half-shells 11 and 12 and of the half-shells 11 and 12 onto the movable contact piece 7, it is advisable to lengthen the half-shells 11, 12 in the direction of the axis 6 between the material recesses 21, 22 and the contact points 17, 18, 19, 20 at least equal to 1 to 1.5 times but at most equal to 2 to 2.5 times the average diameter of the half-shells 11, 12 to choose. It is then possible to achieve sufficient contact forces between the power connection 5 and the half-shells 11, 12 and between the half-shells 11, 12 and the movable contact piece 7 with the spring forces of the compression springs 13, 14 for large and small currents only.

Sind die Druckfedern 13, 14 wie im vorstehenden Ausführungsbeispiel beschrieben als Blattfedern ausgebildet, deren einen Enden im Bereich des Stromanschlusses 5 in Punkten 23 und deren anderen Enden im Bereich der Kontaktstellen 17, 18, 19, 20 in Punkten 24 auf den Aussenseiten der Halbschalen 11, 12 aufliegen, so können unterschiedlich wirkende Kontaktkräfte in einfacher Weise dadurch erreicht werden, dass Auflagepunkte 25 der Druckfedern 13, 14 auf dem Käfig 15 in unterschiedlichen Entfernungen von den Auflagepunkten 23 bzw. 24 gebildet werden.If the compression springs 13, 14 are designed as leaf springs, as described in the previous exemplary embodiment, one ends of which in the area of the power connection 5 in points 23 and the other ends in the area of the contact points 17, 18, 19, 20 in points 24 on the outer sides of the half-shells 11 , 12 rest, differently acting contact forces can be achieved in a simple manner by forming support points 25 of the compression springs 13, 14 on the cage 15 at different distances from the support points 23 and 24, respectively.

Die beiden Kontaktstellen 17, 19 bzw. 18, 20 sind vorzugsweise symmetrisch und jeweils um einen Winkel a von 30 bis 70° gegenüber der Trennebene 16 um die Achse 6 verdreht auf jeder der beiden Halbschalen 11 bzw. 12 angeordnet. Wird der Winkel α vergleichsweise klein, beispielsweise etwa 40° gewählt, so heben sich die parallel zur Trennebene 16 wirkenden vergleichsweise grossen Komponenten der durch den Stromübergang von den Halbschalen 11 bzw. 12 auf das bewegliche Kontaktstück 7 hervorgerufenen, abstossenden Stromkräfte auf und wird die senkrecht zur Trennebene 16 wirkende Komponente der abstossenden Stromkräfte vergleichsweise gering sein. Bei vorgegebener Lage der Halbschalen 11, 12 wird dann bei vergleichsweise geringer Federkraft der Druckfedern 13 und 14 unabhängig von der Stärke des zu führenden bzw. zu schaltenden Stromes stets ein sicherer Zwei-Linien-Kontakt vorliegen.The two contact points 17, 19 and 18, 20 are preferably symmetrical and each rotated by an angle a of 30 to 70 ° with respect to the parting plane 16 about the axis 6 on each of the two half-shells 11 and 12, respectively. If the angle α is selected to be comparatively small, for example approximately 40 °, then the comparatively large components acting parallel to the parting plane 16 cancel out the repulsive current forces caused by the current transfer from the half-shells 11 and 12 to the movable contact piece 7 and become vertical component of the repulsive current forces acting at the parting plane 16 can be comparatively small. For a given position of the half-shells 11, 12, with a comparatively low spring force of the compression springs 13 and 14, there will always be a safe two-line contact regardless of the strength of the current to be conducted or switched.

Wie aus Fig. 3 ersichtlich ist, kann der Stromübergang vom Stromanschluss 5 auf die Halbschalen 11 und 12 in entsprechender Weise durch Kontaktstellen 26, 27, 28, 29 erfolgen. Diese Kontaktstellen sind hinsichtlich des Stromanschlusses 5 entsprechend den Kontaktstellen 17, 18, 19, 20 aufgebaut und angeordnet. Bei geeigneter Anordnung verringern auch diese Kontaktstellen die beim Uebergang vom Stromanschluss 5 auf die Halbschalen 11, 12 auftretenden abstossenden Stromkräfte, wodurch die erforderlichen Federkräfte der Druckfedern 13, 14 auch im Bereich des den Stromübergang 5 aufweisenden Endes der Halbschalen 11, 12 vergleichsweise gering gehalten werden können.As can be seen from FIG. 3, the current transfer from the power connection 5 to the half-shells 11 and 12 can take place in a corresponding manner through contact points 26, 27, 28, 29. These contact points are constructed and arranged corresponding to the contact points 17, 18, 19, 20 with regard to the power connection 5. With a suitable arrangement, these contact points also reduce the repulsive current forces that occur at the transition from the power connection 5 to the half-shells 11, 12, as a result of which the required spring forces of the compression springs 13, 14 are kept comparatively low even in the region of the end of the half-shells 11, 12 that has the current transition 5 can.

Claims (7)

1. A compressed gas circuit breaker with a housing (1) filled with insulating gas, two contact members (7, 8) lying in the housing (1), one (8) of which is formed as a stationary hollow cylindrical one, and one contact member (7) cooperating with the stationary contact member (8) is made in cylindrical shape and is movable along an axis (6), and with two terminals (4, 5) led transversely to the axis (6), each to one of the contact members (7, 8), wherein the stationary contact member (8) is formed of two half shells (11, 12) spaced from each other along a dividing plane (16), the inner surfaces of which, facing each other, have contact areas (17, 18, 19, 20) which, in the closed position of the circuit breaker, abut against the movable contact member (7), characterized in that the terminal (5) of the stationary contact member (8) is made cylindrical and is led to the half shells (11, 12) in the dividing plane (16), and that the lengths of the half shells (11, 12) in the direction of the axis (6) between the terminal (5) of the stationary contact member (8) and the contact areas (17, 18, 19, 20) are proportioned so that the repulsive electrodynamic forces arising upon current transfer between the terminal (5) of the stationary contact member (8) and the half shells (11, 12), and upon current transfer between the half shells (11, 12) and the movable contact member (7), and the attractive electrodynamic forces acting between the half shells (11, 12) substantially compensate each other.
2. A compressed gas circuit breaker according to Claim 1, characterized in that the lengths of the half shells (11, 12) in the direction of the axis (6) between the terminal (5) of the stationary contact member (6) and the contact areas (17, 18, 19, 20) are at least equal to, but at most 2.5 times, the mean diameter of the half shells (11, 12).
3. A compressed gas circuit breaker according to Claim 2, characterized in that in each half shell (11, 12) there are inserted in each case two contact areas (17, 19 ; 18, 20) extending parallel to the axis (6) and directed radially inwards, of material resistant to burning away, such as tungsten copper.
4. A compressed gas circuit breaker according to Claim 3, characterized in that the contact areas (17,19 ; 18, 20) are arranged symmetrically on the half shells (11 ; 12) and each turned about the axis (6) through an angle of 30 to 70° relatively to the dividing plane (16).
5. A compressed gas circuit breaker according to one of Claims 1 to 4, characterized in that the half shells (11, 12) at the ends remote from the contact areas (17, 18, 19, 20) have cut-outs (21, 22) opposite each other, for fitting the half shells (11, 12) onto the terminal (5) of the stationary contact member (8).
6. A compressed gas circuit breaker according to Claim 5, characterized in that the half shells (11, 12) are supported at their ends in each case on a compression spring (13,14) extending parallel to the axis (6).
7. A compressed gas circuit breaker according to Claim 6, characterized in that the compression spring (13, 14) is made blade-shaped, and is supported via an abutment point (25) on the inner wall of a cage (15).
EP86105620A 1985-05-20 1986-04-23 Gas blast switch Expired EP0202496B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2134/85 1985-05-20
CH213485 1985-05-20

Publications (2)

Publication Number Publication Date
EP0202496A1 EP0202496A1 (en) 1986-11-26
EP0202496B1 true EP0202496B1 (en) 1989-02-22

Family

ID=4226663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105620A Expired EP0202496B1 (en) 1985-05-20 1986-04-23 Gas blast switch

Country Status (6)

Country Link
US (1) US4677265A (en)
EP (1) EP0202496B1 (en)
JP (1) JP2710773B2 (en)
DE (1) DE3662167D1 (en)
ES (1) ES8707628A1 (en)
IN (1) IN166990B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0167544B1 (en) * 1988-11-28 1999-01-15 미다 가쓰시게 Switch apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806926A (en) * 1955-06-29 1957-09-17 Mc Graw Edison Co Electric contact
CH355497A (en) * 1958-02-11 1961-07-15 Bbc Brown Boveri & Cie Tulip contact
BE636341A (en) * 1963-05-02
DE2350832B2 (en) * 1973-10-10 1980-05-08 Calor-Emag Elektrizitaets-Aktiengesellschaft, 4030 Ratingen High voltage switch
JPS51115663A (en) * 1975-04-04 1976-10-12 Hitachi Ltd Current collector for breaker
JPS53117767A (en) * 1977-03-24 1978-10-14 Mitsubishi Electric Corp Switch
JPS5553838U (en) * 1978-10-06 1980-04-11
JPS5869414A (en) * 1981-10-16 1983-04-25 株式会社日立製作所 Gas insulated switching device
JPS5949122A (en) * 1982-09-13 1984-03-21 三菱電機株式会社 Power breaker

Also Published As

Publication number Publication date
ES555099A0 (en) 1987-08-01
EP0202496A1 (en) 1986-11-26
ES8707628A1 (en) 1987-08-01
IN166990B (en) 1990-08-18
JP2710773B2 (en) 1998-02-10
JPS61267215A (en) 1986-11-26
US4677265A (en) 1987-06-30
DE3662167D1 (en) 1989-03-30

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