DE454018C - Contact device for the automatic disconnection of transformers, reactors and similar electrical devices with insulating fluid, in particular oil, which is activated directly or indirectly in the event of overloads and body or internal short circuits by the gas bubbles developing - Google Patents

Contact device for the automatic disconnection of transformers, reactors and similar electrical devices with insulating fluid, in particular oil, which is activated directly or indirectly in the event of overloads and body or internal short circuits by the gas bubbles developing

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Publication number
DE454018C
DE454018C DEB108439D DEB0108439D DE454018C DE 454018 C DE454018 C DE 454018C DE B108439 D DEB108439 D DE B108439D DE B0108439 D DEB0108439 D DE B0108439D DE 454018 C DE454018 C DE 454018C
Authority
DE
Germany
Prior art keywords
event
overloads
contact device
transformers
indirectly
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
DEB108439D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEB108439D priority Critical patent/DE454018C/en
Application granted granted Critical
Publication of DE454018C publication Critical patent/DE454018C/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/53Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/55Oil reservoirs or tanks; Lowering means therefor
    • H01H33/555Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/18Switches operated by change of liquid level or of liquid density, e.g. float switch

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)

Description

Transformatoren, Drosselspulen und .ähnliche elektrische Apparate mit Flüssigkeitsisolierung erleiden bekanntlich beim Undichtwerden der Gefäße dadurch Schaden, daß durch die Senkung des Ölspiegels Windungen und andere stromführende Teile aus dem kühlenden Isoliermittel heraustreten und infolgedessen stark erhitzt werden. Außerdem ist jeder Transformator beim Auftreten von ίο Überschlagen im Falle von Überlastungen und Windungs- oder Körperschluß der Gefahr umfangreicher Zerstörungen ausgesetzt.Transformers, reactors and the like It is known that electrical apparatus with liquid insulation suffer when leaking The vessels are damaged by the fact that, by lowering the oil level, windings and other current-carrying parts are removed from the cooling isolating agent emerge and as a result are strongly heated. aside from that is every transformer in the event of ίο flashover in the event of overloads and Winding or short-circuiting to the body exposed to the risk of extensive destruction.

Die Erfindung bezieht sich auf eine Einrichtung, die elektrische Apparate der vorgenannten Art in beiden Fällen gegen Beschädigungen schützt. Sie besteht darin, daß eine in dem Transformatorgehäuse oder einem damit in Verbindung stehenden Nebengefäß angeordnete, die Auslösevorrichtung beeinfLussende Kontaktvorrichtung, die unmittelbar oder mittelbar durch die bei Überlastungen oder Überschlagen sich entwickelnden Zersetzungsgase oder Dämpfe zum Ansprechen gebracht wird, mit einem in seiner Lage vom Ölstand abhängigen Schwimmer zusammengebaut ist, der bei übermäßigem Fallen des Ölspiegels im Sinne der Abschaltung Kontaktschluß herbeiführt.The invention relates to a device, the electrical apparatus of the aforementioned Art protects against damage in both cases. It consists in the fact that a arranged in the transformer housing or a connected secondary vessel, the triggering device influencing the contact device that directly or indirectly through the decomposition gases that develop in the event of overloads or flashovers or vapors are made to respond, assembled with a float whose position depends on the oil level is the contact closure in the event of an excessive drop in the oil level in the sense of switching off the contact brings about.

In der Zeichnung ist die Erfindung in vier Ausfuhrungsbeispielen veranschaulicht.In the drawing, the invention is illustrated in four exemplary embodiments.

In der Abb. ι bedeutet α ein mit dem Hauptgefäß in Verbindung stehendes Rohr, in das eine Scheidewand δ eingebaut ist. In dem Punkte ist eine Scheiben? mit angesetztem Arme drehbar gelagert. Beim Auftreten bzw. Aufsteigen von Gas- oder Zersetzungsblasen im Falle von Überlastungen und Windungs- oder Körperschluß wird die als Kontakt ausgebildete Scheibe^ nach oben bewegt.In Fig. Ι, α means a pipe that is connected to the main vessel and into which a partition δ is built. Is there a disc at that point? rotatably mounted with attached arms. When gas or decomposition bubbles occur or rise in the event of overloads and winding or body shorts, the disk formed as a contact ^ is moved upwards.

Das an dem Drehpunkte angeordnete Gewicht/ sorgt für die Fortsetzung der Bewegung, bis die Scheibed den Kontakt g berührt und hierdurch den Stromkreis für die Betätigung der Abschält- oder einer Signalvorrichtung schließt.The weight / arranged at the pivot point ensures the continuation of the movement until the disk d touches the contact g and thereby closes the circuit for actuating the switch-off device or a signaling device.

Dieselbe Kontaktvorrichtung tritt auch in Tätigkeit, wenn sich der mit dem Arme verbundene Schwimmer h, der, solange er sich unter Öl befindet, durch seinen Auftrieb am Anschlag i anliegt, bei unter der Höhe des Schwimmkörpers absinkendem Ölspiegel sich abwärts bewegt. Durch die Abwärtsbewegung des Schwimmers h dreht sich die Scheibed so lange um den Punkte, bis sie den Gegenkontakt g berührt.The same contact device also comes into operation when the swimmer h, which is connected to the arm and which, as long as it is under oil, rests against the stop i due to its buoyancy, moves downwards when the oil level drops below the level of the float. The downward movement of the float h causes the disk d to rotate around the point until it touches the mating contact g.

Zwei weitere Ausführungsmöglichkeiten zeigen die Abb. 2 und 3.Two further design options are shown in Figs. 2 and 3.

Hier ist die Kontaktplatte k mit einem Schwimmer/ versehen. Bei der ersten Ausführungsform (Abb. 2) sind zwei Kontakte vorhanden. Der obere tritt bei Gasentwicklung, der untere beim Abfallen des Ölspiegels unter .eine gewisse Höhe in Tätigkeit. Die Feder m hält die Platte k in gewöhnlichem Betriebszustand zwischen den beiden Kontakten in der Schwebe.Here the contact plate k is provided with a float /. In the first embodiment (Fig. 2) there are two contacts. The upper one is activated when gas is generated, the lower one when the oil level drops below a certain level. In the normal operating state, the spring m keeps the plate k suspended between the two contacts.

Die zweite Ausführungsform (Abb. 3) weist nur einen Kontakt auf, der, wie aus der Zeichnung ohne weiteres hervorgeht, in beiden Störungsfällen anspricht.The second embodiment (Fig. 3) has only one contact, which, as from the Drawing can be seen without further ado, responds in both malfunctions.

In Abb. 4 ist schließlich die Erfindung an einem Beispiele für einen Transformator ohne Ausgleichsgefäß veranschaulicht. Der kleine Schwimmer ti mit dem Kontaktblech ο schließt den Stromkreis bei Erschütterung der Oberfläche durch aufsteigende Blasen, der große Schwimmerp schließt den Stromkreis beim Abfallen des Ölspiegels unter die zulässige Grenze.Finally, FIG. 4 illustrates the invention using an example of a transformer without an equalizing tank. The small float ti with the contact plate ο closes the circuit when the surface is vibrated by rising bubbles, the large float p closes the circuit when the oil level drops below the permissible limit.

Claims (1)

Patentanspruch:Claim: Kontaktvorrichtung zum selbsttätigen Abschalten von Transformatoren, Drosselspulen und ähnlichen elektrischen Apparaten mit Isolierflüssigkeit, insbesondere Öl, die im Falle von Überlastungen und Körper- oder inneren Kurzschlüssen durch die sich entwickelnden Gasblasen unmittelbar oder mittelbar in Tätigkeit gesetzt wird, dadurch gekennzeichnet, daß mit der in der Isolierflüssigkeit oder auf deren Oberfläche angeordneten Kontaktvorrichtung ein Schwimmkörper an sich bekannter Art zusammengebaut ist, der bei Unterschreitung des zulässigen tiefsten Ölstandes Kontaktschluß herbeiführt.Contact device for the automatic shutdown of transformers, choke coils and similar electrical apparatus with insulating fluid, in particular oil, which in the event of overloads and body damage or internal short circuits are activated directly or indirectly by the developing gas bubbles, characterized in that with the in the insulating liquid or on its surface arranged contact device, a floating body of a known type is assembled, which if the value falls below the lowest permissible oil level brings about contact closure. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DEB108439D Contact device for the automatic disconnection of transformers, reactors and similar electrical devices with insulating fluid, in particular oil, which is activated directly or indirectly in the event of overloads and body or internal short circuits by the gas bubbles developing Expired DE454018C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB108439D DE454018C (en) Contact device for the automatic disconnection of transformers, reactors and similar electrical devices with insulating fluid, in particular oil, which is activated directly or indirectly in the event of overloads and body or internal short circuits by the gas bubbles developing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB108439D DE454018C (en) Contact device for the automatic disconnection of transformers, reactors and similar electrical devices with insulating fluid, in particular oil, which is activated directly or indirectly in the event of overloads and body or internal short circuits by the gas bubbles developing

Publications (1)

Publication Number Publication Date
DE454018C true DE454018C (en) 1927-12-27

Family

ID=6992183

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB108439D Expired DE454018C (en) Contact device for the automatic disconnection of transformers, reactors and similar electrical devices with insulating fluid, in particular oil, which is activated directly or indirectly in the event of overloads and body or internal short circuits by the gas bubbles developing

Country Status (1)

Country Link
DE (1) DE454018C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE766253C (en) * 1938-09-13 1952-05-15 Siemens Schuckertwerke A G OElschuetz
DE1270169B (en) * 1964-11-26 1968-06-12 Rayonnoe Energetitscheskoje Up Gas protection relay for oil transformers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE766253C (en) * 1938-09-13 1952-05-15 Siemens Schuckertwerke A G OElschuetz
DE1270169B (en) * 1964-11-26 1968-06-12 Rayonnoe Energetitscheskoje Up Gas protection relay for oil transformers

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