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General Rules for Dimensioning of Contacts

545 bytes removed, 14:01, 26 January 2023
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===<!--6.4.6 -->General Rules for Dimensioning of Contacts===
*'''Recommended Minimum Contact Forces at Slightly Sliding Contact Make:'''
{| <table class="twocolortable" style="text-align: left; font-size: 12px;width:40%">|-<tr>|<td>Gold </td> |<td>0.03 N</td>|-</tr><tr>|<td>Silver </td>|<td>0.1 N</td>|-</tr><tr>|<td>Tungsten </td>|<td>0.5 N</td>|-</tr>|}</table>
*'''Contact Force Recommendations:'''
{| class="twocolortable" style="text-align: left; font-size: 12px;width:40%"
*'''General Rules for Dimensioning of Contact Rivets'''
[[File:General Rules for Dimensioning of Contact Rivets.jpg|left|thumb|Figure 1: General Rules for Dimensioning of Contact Rivets]]
{| class="twocolortable" style="text-align: left; font-size: 12px;width:100%"
|-
|}
*'''Head diameter for electrical loads'''
{| class="twocolortable" style="text-align: left; font-size: 12px;width:40%"
|-
|For AC currents:
|approx. 1 – 1.5 A/mm²
|-
|For 1 A
|min. 2 mm head diameter
|-
|10 A
|approx. 3 – 3.5 mm head diameter
|-
|20 A
|approx. 5 mm head diameter
|-
|For DC currents:
|approx. 0.5 – 0.8 A/mm²
|}
*'''Head radius R for electrical loads'''
{| class="twocolortable" style="text-align: left; font-size: 12px;width:40%"
|-
|for I < 1 A
|R &#8776; 1,5 mm
|-
|I = 6 A
|R &#8776; 5 mm
|-
|I = 10 A
|R &#8776; 10 mm
|-
|I = 20 A
|R &#8776; 15 mm
|}
*'''Failure Probability of Single and Double (Bifurcated) Contacts''' (according to Thielecke)
{| class="twocolortable" style="text-align: left; font-size: 12px;width:40100%"
|-
!Contact force[N]
|
|2 x 10<sup>-8</sup>
|-
|0.1
|2 x 10<sup>-3</sup>
|4 x 10<sup>-5</sup>
|8 x 10<sup>-5</sup>
|8 x 10<sup>-9</sup>
|-
|0.2
|1 x 10<sup>-4</sup>
|8 x 10<sup>-6</sup>
|4 x 10<sup>-6</sup>
|4 x 10<sup>-8</sup>
|-
|0.3
|5.5 x 10<sup>-6</sup>
|1.5 x 10<sup>-6</sup>
|1.8 x 10<sup>-7</sup>
|3.2 x 10<sup>-10</sup>
|}
<xr id="fig:Failure probability of a contact as a function of the voitage"/> Fig. 6.18: Failure probability of a contact as a function of the voltage (according to Kirchdorfer); Ag/Ni10; 10 mA
<xr id="fig:Failure probability of a contact as a function of the current"/> Fig. 6.19: Failure probability of a contact as a function of the current (according to Kirchdorfer); Ag/Ni10; F = 0.45 N; U = 24 V
<div class="multiple-images">
<figure id="fig:Failure probability of a contact as a function of the voitage">
[[File:Failure probability of a contact as a function of the voitage.jpg|left|thumb|Figure 2: Failure probability of a contact as a function of the voltage (according to Kirchdorfer); Ag/Ni10; 10 mA]]
</figure>
<figure id="fig:Failure probability of a contact as a function of the current">
[[File:Failure probability of a contact as a function of the current.jpg|left|thumb|Figure 3: Failure probability of a contact as a function of the current (according to Kirchdorfer); Ag/Ni10; F<sub>k</sub> = 0.45 N; U = 24 V]]
</figure>
</div>
==References==
[[Application Tables and Guideline Data for Use of Electrical Contact Design#References|References]]
 
[[de:Faustregeln_für_die_Kontaktdimensionierung]]
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