... reliable ; and installation and maintenance are convenient.II, Application:Applicable to three-phase AC 380V 660V, 3KV, 6KV,10KV drag fan ... pump type load of winding type asynchronous motor soft starter speed control, and slip little changed (S≈0.1) , about laden ... wound rotor type asynchronous motor soft starter and control surging currentIII, How to order,1, Model of motors, rated power, ...