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DE698283C - Contact, especially for switching on high currents and for permanent exposure to high currents - Google Patents

Contact, especially for switching on high currents and for permanent exposure to high currents

Info

Publication number
DE698283C
DE698283C DE1939L0097615 DEL0097615D DE698283C DE 698283 C DE698283 C DE 698283C DE 1939L0097615 DE1939L0097615 DE 1939L0097615 DE L0097615 D DEL0097615 D DE L0097615D DE 698283 C DE698283 C DE 698283C
Authority
DE
Germany
Prior art keywords
high currents
switching
contact
copper
currents
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
DE1939L0097615
Other languages
German (de)
Inventor
Lyall Zickrick
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
Application granted granted Critical
Publication of DE698283C publication Critical patent/DE698283C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/025—Composite material having copper as the basic material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Contacts (AREA)

Description

Kontakt, insbesondere zum Einschalten von hohen Strömen und zurr Dauerbelastung mit hohen Strömen Die Erfindung betrifft elektriscl%e Schaltkontakte, die besonders zum Einschalten starker Ströme geeignet sind, ohne zum S-chweißen zu neigen. Für die erwähnten Zwecke hat man zwar bereits verschiedene geeigne@Gq Legierungen vorgeschlagen, die aber im allgemeinen wegen ihres meist hohen Silbergehaltes teuer sind. Die Schaltkontakte nach der Erfindung widerstehen nicht nur hohen Dauerbelastungen und hohen Einschaltströmen, sondern sind .auch recht preiswürdig herzustellen. Sie bestehen vorzugsweise aus 970/0 Kupfer, 2,5% Blei und o, 5 % Selen. Die Legierung wird zweckmäßig über eine aus 80%, Blei und 2o% Selen mit einem Schmelzpunkt von 98o bis iooo° bestehende Vorlegierung durch Einführen in geschmolzenes Kupfer hergestellt. Die anfallende geschmolzene Legierung wird in Streifen geeigneter Stärke gegossen, von denen dann geeignete Längen abgeschnitten werden.Contact, especially for switching on high currents and for continuous load with high currents The invention relates to electrical switching contacts, which are particularly are suitable for switching on strong currents without a tendency to weld. For Various suitable alloys have already been proposed for the purposes mentioned, but which are generally expensive because of their mostly high silver content. The switching contacts according to the invention not only withstand high continuous loads and high inrush currents, but are also quite inexpensive to produce. They preferably consist of 970/0 copper, 2.5% lead and 0.5% selenium. The alloy is expediently via a consisting of 80%, lead and 20% selenium with a melting point of 98o to 100o ° Master alloy made by introducing it into molten copper. The accruing Molten alloy is poured into strips of suitable thickness, of which then suitable lengths can be cut.

Kontakte gemäß der Erfindung habeneinen Widerstand von 2,23 Mikroohm/cms. Kontakte von i o mm o und i, 6 mm Dicke haben im Dauerversuch 45000 Schaltungen .bei einer Einschaltstromstärke von 30o Amp. anstandslos ausgehalten.Contacts according to the invention have a resistance of 2.23 microohms / cms. Contacts with a thickness of 10 mm and 1.6 mm have withstood 45,000 switchings in a long-term test at an inrush current of 30 amps.

Die oben angegebenen Mengen der Leg:erungsbest.andteile haben die besten Ergebnisse gegeben, doch werden brauchbare Kontakte in folgenden Grenzen der - Legierungsmengen erhalten: Blei J o,8 bis io%, Se'_en 0,2 bis 5%, Kupfer Rest. Weiterhin kann das Blei auch ganz durch, Kupfer ersetzt werden. Wenn auch Kupfer als hochleitfähiges und dabei billiges Material. bevorzugt verwendet wird, kann in Spezialfällen doch das Kupfer bis zu to% durch ein anderes hochleitfähiges Metall, wie Silber, er= setzt werden.The above stated quantities of the laying components have the best results are given, but useful contacts are made within the following limits der - Alloy quantities received: lead J o.8 to io%, Se'_en 0.2 to 5%, copper remainder. Furthermore, the lead can also be replaced entirely by copper. Albeit copper as highly conductive and cheap material. is preferably used, can in special cases but the copper up to to% by another highly conductive metal, such as silver, er = to be replaced.

Claims (1)

PATENTANSPRÜCHE: i. Kontäkt,-insb-esondere zum Einschalten von höhen Strömen und zur Dauerbelastungmithohen Strömen, gekennzeich-,net durch folgende Zusammensetzung: Seien ' 0,2 bis 5%, Kupfer Rest. a. Kontakt nach Anspruch r, dadurch gekennzeichnet; daß das Kupfer zu o,.8 bis i o % durch Bleiersetzt ist. 3. Kontakt nach Anspruch 2, dadurch gekennzeichnet, daß außerdem bis zu io% des Kupfers durch Silber erzetzt sind.PATENT CLAIMS: i. Contact, especially for switching on heights Currents and high currents for continuous load, characterized by the following Composition: Be 0.2 to 5%, copper balance. A. Contact according to claim r, characterized marked; that 0.8 to 10% of the copper has been replaced by lead. 3. Contact according to claim 2, characterized in that up to 10% of the copper also passes through Silver are broken.
DE1939L0097615 1938-04-08 1939-04-04 Contact, especially for switching on high currents and for permanent exposure to high currents Expired DE698283C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US698283XA 1938-04-08 1938-04-08

Publications (1)

Publication Number Publication Date
DE698283C true DE698283C (en) 1940-11-06

Family

ID=22091454

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1939L0097615 Expired DE698283C (en) 1938-04-08 1939-04-04 Contact, especially for switching on high currents and for permanent exposure to high currents

Country Status (1)

Country Link
DE (1) DE698283C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746310C (en) * 1936-03-27 1944-06-19 G F Grosser Fa Device for the noiseless return of the paper sledge of typewriters or the like.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746310C (en) * 1936-03-27 1944-06-19 G F Grosser Fa Device for the noiseless return of the paper sledge of typewriters or the like.

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