GROUND TRANSFORMER HAVING EMBEDDED SWITCH APPARATUS

摘要

PURPOSE: A ground transformer is provided to supply a low-voltage power using a ground transformer without a separate ground switch when supplying a power of 220/380V by installing a switch at a specific high-voltage bushing of the ground transformer. CONSTITUTION: An ultra high-voltage bushing unit(40) supplies an ultra high-voltage power from a power supply system. A low-voltage terminal unit(41) transforms and supplies the ultra high-voltage from the specific high-voltage bushing unit into a low voltage according to a turn ratio of a coil. A switch unit(46,47) switches a power input to the ultra high-voltage bushing unit at the power supply system. A fuse unit is connected to the switch unit and cuts off a circuit when over-current is caused.