2,315
edits
Changes
→Testing According to IEC/EN
U<sub>r</sub> = Recovery voltage
[[File:AC3 contact arc erosion of two differently produced Ag SnO2 contact materials.jpg|right|thumb|<caption>AC-3 contact arc erosion of two differently produced Ag/SnO<sub>2</sub> contact materials in a 37 kW contactor <b>1</b> Ag/SnO<sub>2</sub> 88/12, produced by conventional powder metallurgy with MoO<sub>3</sub> additive, extruded <b>2</b> Ag/SnO<sub>2</sub> 88/12, powder manufacturing by the reaction-spray process with CuO and Bi<sub>2</sub> O<sub>3</sub> additives, extruded</caption>]]
====<!--13.4.2.2-->Temperature Rise====
