Inomax ACS880 variable frequency drive with same software and similar hardware than ABB ,also with direct torque control functions and energy saving functions as well as four-quadrant Energy regeneration and feedback function,with in-built filter and reactors,very good performance,maily application for the filed of Steels, Cement, Chemical, Oil & Gas, Power, Polymer & Rubber, Pulp & Paper, Sugar, Minerals & Mining....