TRANSFORMER EARTHING BODY An earthing transformer...

TRANSFORMER EARTHING BODY An earthing transformer (neutral coupler) is a three-phase transformer connected to the power system to provide a neutral connection for earthing, either directly or via impedance. The earthing transformersmay in addition supply a local auxiliary load. Theearthing transformer creates a neutral point for a network. Simply put, a grounding transformer is used to provide a ground path to either an ungrounded “Y” or a delta connected system and are used to…. Provide a relativelylow impedance path to ground, thereby maintaining the system neutral at or near ground potential A grounding transformer or an earthing transformer is used to provide a ground path to either an ungrounded way or a delta-connected system. Uses: It provides a relatively low-impedance path to ground, thereby maintaining the system neutral at or near ground potential. Due to its composition, a zigzag transformer is more effective for grounding purposes because it has less internal winding impedance going to the ground than when using a wye-type transformer. In ungrounded systems, it's still necessary to detect a ground fault. Transformer Star and Star Connections. The voltage between any line of the three-phase transformer is called the “line voltage”, VL, while the voltage between any line and the neutral point of a star connected transformer is called the “phase voltage”, VP.