Core saturation is from warning current transformer

The utility model provides a core saturation is from warning current transformer, includes the main iron core that the amalgamation of two U sections core formed, twining once winding I1, measurement winding I2, protective winding I3 on the main iron core, setting up hall element U in amalgamation department of two U sections core, hall element U is used for carrying out real -time supervision, hall element U output end signal connect protection return circuit to the inside magnetic flow of main iron core. Hall element U is placed in one or two amalgamation department at two U sections core. The utility model relates to a core saturation is from warning current transformer does not change the on the basis of of electromagnetic type current transformer's current advantage, utilizes hall element to carry out real -time supervision to the change of iron core inside magnetic flow. Send alarm signal in the twinkling of an eye at electromagnetic type current transformer core saturation, make corresponding pro tection loop or attendant make correct processing rapidly, prevent accident expansion. Especially, can prevent core saturation produced mutual -inductor explosion or damage accident.