Changes

Jump to: navigation, search

General Rules for Dimensioning of Contacts

280 bytes removed, 13:01, 26 January 2023
no edit summary
===<!--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'''
   '''Failure Probability of Single and Double (Bifurcated) Contacts''' (according to Thielecke) {| class="twocolortable" style="text-align: left; font-size: 12px;width:40100%"
|-
|For AC currents: !Contact force[N] !colspan="4" style="text-align:center"|approx. 1 – 1.5 A/mm²'''Single contact'''
|-
|For 1 A ! |min. 2 mm head diameter!Ag!AuNi 5, Pt!Ag!AuNi 5, Pt
|-
|10 A |approx0. 3 – 3.5 mm head diameter04 |-|20 A |approx. 5 mm head diameter|1 x 10<sup>-|For DC currents: |approx. 0.5 – 0.8 A4</mm²sup>|} *'''Head radius R for electrical loads''' {| class="twocolortable" style="text2 x 10<sup>-align: left; font-size: 12px;width:40%"|-|for I 8< 1 A |R &#8776; 1,5 mm/sup>
|-
|I = 6 A 0.1 |R &#8776; 2 x 10<sup>-3</sup>|4 x 10<sup>-5 mm</sup>|8 x 10<sup>-5</sup>|8 x 10<sup>-9</sup>
|-
|I = 0.2|1 x 10<sup>-4</sup>|8 x 10<sup>-6</sup>|4 x 10 A <sup>-6</sup>|R &#8776; 4 x 10 mm<sup>-8</sup>
|-
|I = 20 A 0.3|R &#8776; 15 mm5.5 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>
|}
*'''Failure Probability of Single and Double (Bifurcated) Contacts''' (according to Thielecke)
 
<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]]

Navigation menu

Powered by