... speed by changing the motor rotor resistance wound motor speed control device I, mainly features:1. Starting current is small, ... ; and installation and maintenance are convenient.II, Application:Applicable to three-phase AC 380V 660V, 3KV, 6KV,10KV drag fan ... laden wound rotor type asynchronous motor soft starter and control surging currentIII, How to order,1, Model of motors, rated power, stator ...