CURRENT FAULT DETECTION SYSTEM AND METHOD FOR AC CONTROLLERS

摘要

Case 4817 An overcurrent protection system for AC motor oontrol systems which provides a separate overcurrent sbut down mechanism for each phase of the AC power used in an AC motor. These separate phase shutdown mechanisms provide protection for minor overcurrent conditions without shutting down the entire motor control system. The overcurrent protection system also provides a mechanical feedback apparatus for totally shutting down the motor control system only in a severe overcurrent condition.