DE973925C - Extinguishing and insulating fluid for high and low voltage switches - Google Patents

Extinguishing and insulating fluid for high and low voltage switches

Info

Publication number
DE973925C
DE973925C DEL14960A DEL0014960A DE973925C DE 973925 C DE973925 C DE 973925C DE L14960 A DEL14960 A DE L14960A DE L0014960 A DEL0014960 A DE L0014960A DE 973925 C DE973925 C DE 973925C
Authority
DE
Germany
Prior art keywords
extinguishing
low voltage
voltage switches
insulating fluid
compounds
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
DEL14960A
Other languages
German (de)
Inventor
Herbert Dipl-Ing Gnielinski
Paul Dr-Ing Nowak
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Priority to DEL14960A priority Critical patent/DE973925C/en
Application granted granted Critical
Publication of DE973925C publication Critical patent/DE973925C/en
Expired legal-status Critical Current

Links

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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/22—Selection of fluids for arc-extinguishing

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)

Description

Lösch- und Isolierflüssigkeit für Hoch- und Niederspannungsschalter Es sind Lösch- und Isolierflüssigkeiten für Hoch- und Niederspannungsgeräte bekannt, die aus siliziumorganischen Verbindungen bestehen. Als derartige Verbindungen sind insbesondere auch Siloxanverbindungen bekanntgeworden.Extinguishing and insulating liquid for high and low voltage switches There are extinguishing and insulating liquids for high and low voltage devices known, which consist of organosilicon compounds. As such connections are in particular, siloxane compounds have also become known.

Die Erfindung geht zur Verbesserung der Eigenschaften dieser Stoffe als Schaltflüssigkeiten von der Erkenntnis aus, daB durch geeignete Zusatzstoffe eine rasche Beendigung der bei der Lichtbogenhitze zunächst eintretenden thermischen Zersetzung der Isolierflüssigkeit bewirkt wird. Die Erfindung befaBt sich mit Zusätzen für Siloxanöle, die als Schaltflüssigkeiten für Hoch- und Niederspannungsschalter verwendet werden, und besteht darin, daB die Zusätze amidhaltige Verbindungen, wie Harnstoff, seine Derivate und Kondensationsprodukte oder Cyanamid und seine Polymerisationsprodukte, wie Melamin und dessen Kondensationsprodukte sind.The invention aims to improve the properties of these substances as switching fluids based on the knowledge that suitable additives a quick termination of the thermal that initially occurs with arc heat Decomposition of the insulating liquid is effected. The invention is concerned with additives for siloxane oils, which are used as switching fluids for high and low voltage switches are used, and consists in that the additives amide-containing compounds, such as Urea, its derivatives and condensation products or cyanamide and its polymerisation products, how melamine and its condensation products are.

Die Zusätze zersetzen sich, ohne vorher möglicherweise zu brennbaren oder doch als Löschmittel unwirksamen Stoffen zu verdampfen.The additives decompose without possibly becoming flammable beforehand or to vaporize substances that are ineffective as an extinguishing agent.

Es ist bereits bekannt, Harnstoffe und andere Verbindungen Schalterölen als flammtötend wirksaure Stoffe zuzugeben. Andererseits ist auch schon vorgeschlagen worden, Silikone zur Verwendung als Isoliermittel in Trafos oder Stromunterbrechern einzusetzen.It is already known to switch oils and ureas and other compounds as a flame-killing acid Add substances. On the other hand is too It has already been proposed that silicones be used as insulating agents in transformers or circuit breakers.

Es hat sich aber in der Praxis herausgestellt. daB Silikone als Löschmittel für hohe Ströme im allgemeinen nicht "den gestellten Anforderungen hinreichend genügen. So beträgt z. B. die Lichtbogendauer für Silikone fünfzehn Halbwellen und mehr. Auch wird die Flammwidrigkeit durch Zusätze beispielsweise von stickstoffhaltigen Verbindungen nicht verbessert, jedoch tritt mit dieser Kombination überraschenderweise ein merkbarer Löscheffekt auf.But it has been found in practice. that silicones are used as extinguishing agents for high currents in general not "adequately meet the requirements. So z. B. the arc duration for silicones fifteen half waves and more. The flame retardancy is also increased by the addition of, for example, nitrogenous Compounds not improved, however, surprisingly occurs with this combination a noticeable extinguishing effect.

Für die Wirksamkeit der Zusatzstoffe ist es ohne besondere Bedeutung, ob diese in Form einer Lösung in der Flüssigkeit, einer Suspension oder Emulsion, oder in Form einer chemischen Verbindung mit der Isolierflüssigkeit anwesend sind. Bei der hohen Temperatur des Lichtbogens werden die Zusatzstoffe - ganz gleich in welcher Form sie der Isolierflüssigkeit beigegeben sind - in ihre Zersetzungsprodukte zerfallen. Als Ausführungsbeispiel sei eine Silikoneflüssigkeit vom Charakter eines Transformatorenöles genannt, in der in Mengen von io bis aoo/o ein Harnstoffharz niedrigen Kondensationsgrades dispergiert ist. Ähnliche Löschwirkung haben Zusätze von Cyanamid, seinen Polymerisationsprodukten, wie Melamin und dessen Kondensationsprodukten.For the effectiveness of the additives, it is of no particular importance whether this is in the form of a solution in the liquid, a suspension or an emulsion, or are present in the form of a chemical compound with the insulating liquid. At the high temperature of the arc, the additives - no matter in which form they are added to the insulating liquid - in their decomposition products disintegrate. As an exemplary embodiment, let a silicone liquid have the character of one Transformer oil called, in amounts of 10 to aoo / o a urea resin low degree of condensation is dispersed. Additives have a similar extinguishing effect of cyanamide, its polymerization products such as melamine and its condensation products.

Claims (1)

PATENTANSPRUCH: Lösch- und Isolierflüssigkeit für Hoch- und Niederspannungsschalter, bestehend aus 'si.liziumorgani:sahen Verbindungen, insbesondere Siloxanverbindungen, gekennzeichnet durch Zusätze amidhaltiger Verbindungen, wie Harnstoff, seinen Derivaten und Kondensationsprodukten oder Cyanamid und seinen Polymerisationsprodukten, wie Melamin und dessen Kondensationsprodukten. In Betracht gezogene Druckschriften: USA.-Patentschriften Nr. z 397 895, 2 441 320, 2 456 783, 2 457 677.PATENT CLAIM: Extinguishing and insulating liquid for high and low voltage switches, consisting of 'si.lizitorgani: saw compounds, in particular siloxane compounds, characterized by the addition of amide-containing compounds, such as urea, its derivatives and condensation products or cyanamide and its polymerization products, such as melamine and its condensation products. Contemplated publications:. USA. Patent Nos z 397 895, 2441320, 2 456 7 8 3 2457677.
DEL14960A 1953-03-17 1953-03-17 Extinguishing and insulating fluid for high and low voltage switches Expired DE973925C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL14960A DE973925C (en) 1953-03-17 1953-03-17 Extinguishing and insulating fluid for high and low voltage switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL14960A DE973925C (en) 1953-03-17 1953-03-17 Extinguishing and insulating fluid for high and low voltage switches

Publications (1)

Publication Number Publication Date
DE973925C true DE973925C (en) 1960-07-21

Family

ID=7259972

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL14960A Expired DE973925C (en) 1953-03-17 1953-03-17 Extinguishing and insulating fluid for high and low voltage switches

Country Status (1)

Country Link
DE (1) DE973925C (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2397895A (en) * 1945-02-14 1946-04-02 Corning Glass Works Organo-siloxanes and methods of preparing them
US2441320A (en) * 1944-03-20 1948-05-11 Corning Glass Works Organo-siloxanes and methods of making them
US2456783A (en) * 1942-11-27 1948-12-21 Corning Glass Works Siloxane copolymers
US2457677A (en) * 1943-12-15 1948-12-28 Corning Glass Works Organo-siloxanes and method of making them

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456783A (en) * 1942-11-27 1948-12-21 Corning Glass Works Siloxane copolymers
US2457677A (en) * 1943-12-15 1948-12-28 Corning Glass Works Organo-siloxanes and method of making them
US2441320A (en) * 1944-03-20 1948-05-11 Corning Glass Works Organo-siloxanes and methods of making them
US2397895A (en) * 1945-02-14 1946-04-02 Corning Glass Works Organo-siloxanes and methods of preparing them

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