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Schaltende Kontakte

1,837 bytes removed, 13:35, 12 January 2023
Schaltende Kontakte
<li>'''Effekte bei Schaltvorgängen'''</li>
<xr id="fig:Contact_opening_with_arc_formation_schematic"/><!--Fig. 6.7:--> Kontaktöffnung unter Lichtbogenbildung (schematisch)
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<figure id="fig:Contact_opening_with_arc_formation_schematic">
[[File:Contact opening with arc formation schematic.jpg|left|thumb|<caption>Kontaktöffnung unter Lichtbogenbildung (schematisch)</caption>]]
</figure>
<figure id="fig:Influences on contact areas in relays">
[[File:Influences on contact areas in relays.jpg|left|thumb|<caption>Einflüsse auf Kontaktstellen in Relais</caption>]]
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<li>'''Influence of out-gasing from plastics'''</li>
 
<xr id="fig:Histogram_of_the_contact_resistance_Rk"/><!--Fig. 6.9:--> Histogram of the contact resistance Rk of an electroplated palladium layer (3 μm) with and without hard gold flash plating (0.2 μm) after exposure with different plastic materials
<xr id="fig:Contact resistance with exposure to out gasing from plastics"/><!--Fig. 6.10:--> Contact resistance with exposure to out gasing from plastics as a function of numbers of operations at 6 V<subli>DC'''Einfluss von Kunststoffausgasungen'''</subli>,100 mA: 1 Silicon containing plastic; 2 Plastics with strongly out-gasing components; 3 Plastics with minimal out-gasing components
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<figure id="fig:Histogram_of_the_contact_resistance_Rk">
[[File:Histogram of the contact resistance Rk.jpg|left|thumb|<caption>Histogram of the contact resistance Histogramm des Kontaktwiderstandes R<sub>K</sub> of an electroplated palladium layer einer galvanischen Palladiumschicht (3 μm) with and without hard gold flash plating mit und ohne Hartgoldflash (0.,2 μm) after exposure with different plastic materialsbei Auslagerung mit verschiedenen Kunststoffen</caption>]]
</figure>
<figure id="fig:Contact resistance with exposure to out gasing from plastics">
[[File:Contact resistance with exposure to out gasing from plastics.jpg|left|thumb|<caption>Contact resistance with exposure to out-gasing from plastics as a function of numbers of operations at Kontaktwiderstand und Ausgasungen aus Kunststoffen in Abhängigkeit von derSchaltspielzahl bei 6 V<sub>DC</sub>,100 mA: 1 Silicon containing plasticsilikonhaltiger Kunststoff; 2 Plastics with strongly out-gasing componentsKunststoffe mit stark ausgasenden Komponenten; 3 Plastics with minimal out-gasing componentsKunststoffe mit minimaler Ausgasung</caption>]]
</figure>
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<li>'''Influence of corrosive gases on the contact resistanceEinfluss von Schadgasen auf den Kontaktwiderstand'''</li>
<xr id="fig:Distribution of cumulative frequency H of the contact resistance for solid contact rivets"/><!--Fig. 6.11:--> Distribution of cumulative frequency H of the contact resistance for solid contact rivets after 10 days exposure in a three-component test environment with 400 ppb each of H<sub>2</sub>S, SO<sub>2</sub> and NO<sub>2</sub> at 25°C, 75% RH; Contact force 10cN; Measuring parameters: ≤ 40 mV<sub>DC</sub>,10 mA; Probing
contact: Gold rivet
<div class="multiple-images">
<figure id="fig:Distribution of cumulative frequency H of the contact resistance for solid contact rivets">
[[File:Distribution of cumulative frequency H of the contact resistance for solid contact rivets.jpg|left|thumb|<caption>Distribution of cumulative frequency Summenhäufigkeitsverteilung H of the contact resistance for solid contact rivets after des Kontaktwiderstandes RK massiver Kontaktniete aus verschiedenen Kontaktwerkstoffen nach 10 days exposure in a three-component test environment with tägiger Auslagerung im Dreikomponentenklima mit je400 ppb each of H<sub>2</sub>S, SO<sub>2</sub> and und NO<sub>2</sub> at bei 25°C, 75% RHr. F.; Contact force 10cNKontaktkraft: 10 cN; Measuring parametersMessbedingungen: ≤ 40 mV<40mV<sub>DC</sub>,10 mA10mA; ProbingcontactGegenkontakt: Gold rivetAu-Niet</caption>]]
</figure>
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[[File:Influences on contact areas in relays.jpg|right|thumb|Influences on contact areas in relays]] <li>'''Contact Phenomena under the influence of arcing MatertiaKontaktphänomene bei Lichtbogeneinwirkungen'''</li>
<ul>
<li>'''Material transferMaterialwanderung'''</li>
<xr id="fig:Material transfer under DC load"/><!--Fig. 6.12:--> Material transfer under DC load a) Cathode; b) Anode. <br /> Material: AgNi0.15; Switching parameters: 12V<sub>DC</sub>, 3 A, 2x10<sup>6</sup> operations
<div class="multiple-images"><figure id="fig:Material transfer under DC load">[[File:Material transfer under DC load.jpg|left|thumb|<caption>Material transfer under DC load Materialwanderung bei Gleichstrombetrieb. a) CathodeKathode; b) Anode. <br /> Material: AgNi0.AgNi 0,15; Switching parametersSchaltbedingungen: 12V12 V<sub>DC</sub>, 3 A, 2x10; 2 x 10<sup>6</sup> perationsSchaltungen</caption>]]</figure></div>
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<li>'''Arc erosionAbbrand'''</li>
<xr id="fig:Arc erosion of a AgSnO2 contact pair after extreme arcing conditions"/><!--Fig. 6.13:--> Arc erosion of a Ag/SnO<sub>2</sub> contact pair after extreme arcing conditions a) Overall view; b) Partial detail view
<div class="multiple-images"><figure id="fig:Arc erosion of a AgSnO2 contact pair after extreme arcing conditions">[[File:Arc erosion of a AgSnO2 contact pair after extreme arcing conditions.jpg|left|thumb|<caption>Arc erosion of a Abbrand eines Ag/SnO<sub>2</sub> contact pair after extreme arcing conditions Kontaktpaares nach extremer Lichtbogenbeanspruchung a) Overall viewGesamtansicht; b) Partial detail viewTeilansicht</caption>]]</figure></div>
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<li>'''Contact welding'''</li>
<xr id="fig:Micro structure of a welded contact pair after extremely high current load"/><!--Fig. 6.14:--> Micro structure of a welded contact pair (Ag/SnO<sub>2</subli>88/12 - Ag/CdO88/12) after extremely high current load. a) Ag/SnO<sub>2'''Verschweißen'''</subli>88/12; b) Ag/CdO88/12 
<div class="multiple-images">
<figure id="fig:Micro structure of a welded contact pair after extremely high current load">
[[File:Micro structure of a welded contact pair after extremely high current load.jpg|left|thumb|<caption>Micro structure of a welded contact pair Gefügebild eines verschweißten Kontaktpaares (Ag/SnO<sub>2</sub>88/12 - Ag/CdO88/12) after extremely high current load2nach extrem hoher Strombelastung. a) Ag/SnO<sub>2</sub>88/12; b) verschweißte Zone; c) Ag/CdO88CdO 88/12</caption>]]
</figure>
</div>
</ul>
==ReferencesReferenzen==[[Application Tables and Guideline Data for Use of Electrical Contact DesignAnwendungstabellen_und_Richtwerte_für_den_Einsatz_elektrischer_Kontakte#ReferencesReferenzen|ReferencesReferenzen]]
[[en:Switching_Contacts]]

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