DE759440C - Method to prevent the formation of peaks and craters through fine migration at contacts - Google Patents

Method to prevent the formation of peaks and craters through fine migration at contacts

Info

Publication number
DE759440C
DE759440C DES134598D DES0134598D DE759440C DE 759440 C DE759440 C DE 759440C DE S134598 D DES134598 D DE S134598D DE S0134598 D DES0134598 D DE S0134598D DE 759440 C DE759440 C DE 759440C
Authority
DE
Germany
Prior art keywords
contacts
formation
peaks
prevent
craters
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
DES134598D
Other languages
German (de)
Inventor
Fritz Dipl-Ing Hennig
Ragnar Dr Phil Holm
Herbert Dipl-Ing Wuesteney
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens 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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES134598D priority Critical patent/DE759440C/en
Application granted granted Critical
Publication of DE759440C publication Critical patent/DE759440C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts

Landscapes

  • Manufacture Of Switches (AREA)

Description

Bei der Betätigung von Kontakten ist' es bekannt, daß durch die sogenannte Feinwanderung (s. »Wissenschaftliche Veröffent- - Mohuttgen aus den Siemens-Werken«, Bd. 14, 1935, Heft i, S...30) Spitzen und Krater entstehen können, ohne daß- deshalb, wie bei der Grobwanderung, Lichtbogen oder Glimmentladungen entstehen. Diese Verformungen der Kontakte haben bei Relais- und sonstigenWhen actuating contacts, it is known that by the so-called fine migration (see "Scientific publications - Mohuttgen from the Siemens works", Vol. 14, 1935, issue i, p ... 30) peaks and craters arise can, without that, as with coarse migration, arcs or glow discharges develop. These deformations of the contacts have with relay and other

to Steuerkontakten eine ungenaue Kontaktgabe zur Folge. Sie führen zu Kurzschlüssen, so daß die Kontakte geringe Lebensdauer haben und laufende Wartung benötigen.to control contacts result in inaccurate contact. They lead to short circuits, like that that the contacts have a short service life and require ongoing maintenance.

Gemäß der Erfindung werden diese durch die Feinwanderung entstehenden Verformungen dadurch verhindert, daß der wandernde Stoff durch eine zusätzliche Kraft aus dem Gebiet der jeweils kontaktgebenden Stelle entfernt wird. Die zusätzliche Kraft brauchtAccording to the invention, these deformations caused by the fine migration are eliminated this prevents the migrating material from being exerted by an additional force Area of the respective contacting point is removed. That takes extra strength

ao dabei nicht mit Rücksicht auf irgendwelche Funken- oder Lichtbogenbildung· bemessen zu werden, die ja, wie oben erwähnt, bei der Feinwanderung überhaupt nicht auftreten.ao not dimensioned with regard to the formation of sparks or arcing which, as mentioned above, do not occur at all during the fine hike.

In der Figur ist ein Ausführungsbeispiel der Erfindung für ein Relais dargestellt.In the figure, an embodiment of the invention for a relay is shown.

Auf einer Achse 1 ist eine Platte 2 befestigt, die einen Elektromagneten 3 trägt. Der Anker des Magneten ist um eine Achse 4 schwenkbar, die senkrecht zur Achse 1 verläuft. Der Anker 5 betätigt gegen die Wirkung der Feder 6 den Kontakt 7 gegen, 8. Durch eine Stellschraube 9 ist der Kontaktspalt einstellbar. Die Zuleitung zu den Kontaktgliedern und zur Magnetspule erfolgt durch Schleifringe 10. Es sei nun angenommen, daß durch den Kontakt 7, 8 ein Gleichstrom verhältnismäßig hoher Leistung oft, z. B. zu Regelzwecken, ein- und ausgeschaltet werden soll. Die Materialwanderung zwischen den Kontaktgliedern wird dabei durch die Wirkung der beim Umlauf der Achse 1 auftretenden Zentrifugalkraft unwirksam gemacht, indem die wandernden Teilchen aus dem Kontaktspalt in Richtung auf das Gehäuse π weggeschleudert werden. Die Teilchen brauchen nicht vollständig aus. dem Kontaktspalt entfernt zu werden. Es genügt, sie von der augenblicklich kontaktgebenden Stelle an andere Stellen der Kontaktoberfläche zu bewegen. Eine Krater- und Spitzenbildung kann so vermieden werden.A plate 2, which carries an electromagnet 3, is fastened on an axle 1. The armature of the magnet can be pivoted about an axis 4 which is perpendicular to axis 1. The armature 5 actuates the contact 7 against the action of the spring 6, 8. The contact gap can be adjusted by means of an adjusting screw 9. The lead to the contact members and to the magnet coil is carried out by slip rings 10. It is now assumed that that through the contact 7, 8 a direct current of relatively high power often, z. B. for control purposes, should be switched on and off. The migration of material between the contact members are thereby caused by the effect of the rotation of the axis 1 Centrifugal force made ineffective by moving the migrating particles out of the contact gap towards the housing π be thrown away. The particles do not need completely. to the Contact gap to be removed. Suffice it to do with the instantly contacting them Place to move to other places on the contact surface. A crater and peak formation can thus be avoided.

Aus der Literatur sind zwar Anordnungen bekannt, bei denen Kontakte ähnlich angeordnet sind wie bei dem obenerwähnten Ausführungsbeispiel. Jedoch erwähnt keine der Literaturstellen eine solche Bemessung der zusätzlichen Kraft, daß auch die bei Feinwanderung entstehenden Teilchen entfernt werden.Arrangements are known from the literature in which contacts are arranged similarly are as in the above-mentioned embodiment. However, none of that mentions References such a dimensioning of the additional force that also with fine migration resulting particles are removed.

Claims (4)

Patentansprüche:Patent claims: 1. Verfahren zur Verhinderung der Spitzen- und Kraterbildung durch Feinwanderung an Kontakten, an denen beim Schaltvorgang keine Lichtbogen entstehen, dadurch gekennzeichnet, daß der wandernde Stoff durch eine zusätzliche Kraft aus dem Gebiet der jeweils kontaktgebenden Stelle entfernt wird, ohne daß die zusätzliche Kraft mit Rücksicht auf die Funkenlöschung bemessen ist.1. Procedure to prevent the formation of peaks and craters due to fine migration on contacts where no arcing occurs during switching, characterized in that the migratory substance by an additional force from the area of the respective contact-making Place is removed without the additional force being dimensioned with regard to the spark extinction. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zentrifugalkraft zur Entfernung des wandernden Stoffes benutzt wird.2. The method according to claim 1, characterized in that the centrifugal force is used to remove the migrating material. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein zusätzlicher Luftstrom zur Entfernung des wandernden Stoffes benutzt wird.3. The method according to claim 1, characterized in that an additional air flow is used to remove the migrating material. 4. Vorrichtung zur Ausübung des Verfahren« nach Anspruch i<. und 2, gekennzeichnet durch eine derartige Anordnung eines Relais auf einer umlaufenden Scheibe, daß der Kontaktspalt parallel zur Richtung der Fliehkraft an der Kontaktstelle liegt.4. Apparatus for performing the method «according to claim i <. and 2, marked by such an arrangement of a relay on a rotating disc that the contact gap is parallel to Direction of centrifugal force at the contact point.
DES134598D 1938-11-12 1938-11-13 Method to prevent the formation of peaks and craters through fine migration at contacts Expired DE759440C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES134598D DE759440C (en) 1938-11-12 1938-11-13 Method to prevent the formation of peaks and craters through fine migration at contacts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2272315X 1938-11-12
DES134598D DE759440C (en) 1938-11-12 1938-11-13 Method to prevent the formation of peaks and craters through fine migration at contacts

Publications (1)

Publication Number Publication Date
DE759440C true DE759440C (en) 1953-02-16

Family

ID=25999055

Family Applications (1)

Application Number Title Priority Date Filing Date
DES134598D Expired DE759440C (en) 1938-11-12 1938-11-13 Method to prevent the formation of peaks and craters through fine migration at contacts

Country Status (1)

Country Link
DE (1) DE759440C (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE45430C (en) * Dr. ST. DOUBRAVA in Brünn, Neugasse 95 Transformer for electrical currents
CH102403A (en) * 1922-10-13 1923-12-01 Oerlikon Maschf Electrical contact for DC circuit breaker.
GB440505A (en) * 1933-08-26 1936-01-01 British Thomson Houston Co Ltd Improvements in and relating to electric rectifiers or inverters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE45430C (en) * Dr. ST. DOUBRAVA in Brünn, Neugasse 95 Transformer for electrical currents
CH102403A (en) * 1922-10-13 1923-12-01 Oerlikon Maschf Electrical contact for DC circuit breaker.
GB440505A (en) * 1933-08-26 1936-01-01 British Thomson Houston Co Ltd Improvements in and relating to electric rectifiers or inverters

Similar Documents

Publication Publication Date Title
EP0864168B1 (en) Method and device for monitoring consumption of contact elements in a switching device
DE759440C (en) Method to prevent the formation of peaks and craters through fine migration at contacts
DE1207989B (en) Vacuum switch for alternating current
DE8624712U1 (en) Hermetically closed permanent magnetic release for residual current circuit breakers
DE2938708A1 (en) DEFIBRILLATOR
DE3129161A1 (en) Arc extinguishing chamber
AT209376B (en) Clamp socket for carbon contact pieces
EP0561485B1 (en) High speed disconnecting switch
DE2215180A1 (en) Electromagnetic switching device
DE691727C (en) Small self switch
DE2934238A1 (en) Lightning arrester spark gap - with spacing disc between electrodes releasing arc quenching hydrogen when heated
DE738249C (en) Contact arrangement for switching devices
DE716172C (en) Surge arresters
AT89854B (en) Device for measuring and metering small amounts of electricity and currents.
DE693364C (en) Device for switching off alternating currents of higher frequency
DE899606C (en) Magnetic circuit for generating electrical power through the action of mechanical forces
DE356769C (en) Oil switch with multiple interruptions
DE377672C (en) Electric rotary switch
DE912477C (en) Device to prevent contactors from welding together in hazardous locations
DE417978C (en) Switching device, in particular protective device, operating as a function of two electrical quantities
DE656918C (en) Contact arrangement for contactors or similar switching devices with high switching frequency
DE583248C (en) Device for the automatic replacement of electrical equipment damaged by a short circuit
DE478801C (en) Electrical switch with rolling contact disks that can be rotated around parallel axes
EP0060919B1 (en) Method for the adaptation of surfaces forming an air gap for a release, especially for fault current protective switches
DE6928757U (en) DEVICE FOR DETECTION OF ELECTRICALLY CONDUCTIVE PARTICLES IN NON-CONDUCTIVE FLOW MEDIUM