METHODS AND APPARATUS FOR CONTINUOUS GROUND FAULT SELF-TEST

摘要

Methods and apparatus for continuous ground fault self-test are disclosed. An example ground fault detection device includes a sense coil (1316) to detect current in a line conductor (1302) and a neutral conductor (1304), the sense coil comprising a winding influenced by a current difference between the line conductor and the neutral conductor. The example ground fault detection device also includes a current bypass to facilitate a continuous current imbalance detected by the sense coil, and a ground fault detector circuit (1314) to detect at least one of the continuous current imbalances in the sense coil or a ground fault current imbalance.