The utility model provides a current transformer case of loading for training, includes shell and internal circuit, the internal circuit comprises resistance, inductance, remote switch, wire and Z, two terminals of 5A, specifically is: connect the resistance and the inductance of a plurality of crisscross series connection on the main line be connected with Z, every resistance or inductance all and met remote switch, two branch roads are told to the main line end, and one of them strip a plurality of series resistance of route forms, and a terminal is drawn to every resistance, the terminal can link to each other with the 5A terminal, and except that terminal resistance, every resistance has met remote switch. The utility model discloses in being applied to new employee's training process, can only one reach multiple measuring result by under the condition of examination article, the trouble of having avoided training process many times to change current transformer has not only improved training efficiency, while the system stability is high, the practicality is strong, saving cost and space.