This　paper　aims　to　investigate　the　anode　modes　of　vacuum　arc　at　different　opening　speeds,　especially　at　a　high　opening　speed　that　exceeds　3　m/s.　The　butt　contacts　made　of　CuCr30　and　CuCr50　with　a　diameter　of　15　mm　are　used.　Experiments　are　conducted　at　the　current　of　3.3,　4.4,　5.5,　and　6.3　kA　with　a　frequency　of　50　Hz.　An　electromagnetic　repulsion　actuator　provides　the　average　opening　speed　from　1.7　to　3　m/s.　The　experimental　results　show　that　the　number　of　droplets　splashing　into　electrodes　increases　as　the　arc　current　increases,　while　a　higher　opening　speed　decreases　the　droplets.　A　higher　opening　speed　will　reduce　the　transferred　charge　before　the　anode　spot　type　2,　and　a　higher　Cr　content　increases　the　transferred　charge　before　the　anode　spot　type　2.　Increasing　opening　speed　will　decrease　the　starting　time　of　anode　spot　type　2,　but　it　increases　the　gap　distance　when　anode　spot　type　2　appears.　Meanwhile,　the　increase　in　Cr　content　delays　the　formation　of　anode　spot　type　2.　©　2022　Author(s).