Method of manufacturing separable electromagnetic inductive apparatus for power

Abstract

A method for manufacturing a separable electromagnetic inductive apparatus is provided. The method for manufacturing a separable electromagnetic inductive apparatus comprises a winding step for winding a steel plate composed of a rolled amorphous magnetic alloy to a circular shape to form a magnetic core; a heat treating and an impregnating step for heat treating and impregnating the wound magnetic core without adding cobalt; a cutting step for cutting the heat treated and impregnated magnetic core to an orthogonal direction to the wound direction of the magnetic core; and a polishing step for polishing the cut surface having a three-dimensional plane of the cut surface of the magnetic core evenly arranged in a fixed state.

1 - 5 . (canceled) 
     
     
         6 . A method for manufacturing a separable electromagnetic inductive apparatus for power, the method comprising:
 forming a steel plate made of a magnetic material in a substantially circular shape to form a magnetic core having an inner opening for receiving a power line, said magnetic material characterized by having a magnetic saturation characteristic of silicon steel or less;   cutting the magnetic core into at least two magnetic core portions in a direction substantially orthogonal to the wound direction of the magnetic core; and   aligning corresponding cut surfaces of the at least two magnetic core portions.   
     
     
         7 . The method as defined in  claim 6 , wherein the magnetic material is an amorphous metal. 
     
     
         8 . The method as defined in  claim 6 , wherein the magnetic material is an alloy. 
     
     
         9 . The method as defined in  claim 6 , wherein the magnetic material comprises a non-cobalt material. 
     
     
         10 . The method as defined in  claim 6 , wherein the magnetic material comprises a low cobalt material. 
     
     
         11 . The method as defined in  claim 10 , wherein the low cobalt material is silicon steel. 
     
     
         12 . The method as defined in  claim 6 , wherein the magnetic material is further treated by impregnating. 
     
     
         13 . The method as defined in  claim 12 , wherein the impregnating is vacuum impregnating. 
     
     
         14 . The method as defined in  claim 12 , wherein said further treatment is in the presence of a treatment material characterized by a low magnetic saturation characteristic. 
     
     
         15 . The method as defined in  claim 6 , wherein the magnetic core is further treated using heat treatment. 
     
     
         16 . The method as defined in  claim 6 , wherein the method includes polishing said cut surfaces. 
     
     
         17 . The method as defined in  claim 6 , wherein the polishing comprises adding a coolant simultaneously during said polishing. 
     
     
         18 . The method as defined in  claim 6 , wherein the magnetic core comprises a plurality of layers of the magnetic material. 
     
     
         19 . The method as defined in  claim 18 , wherein there is no gap between each of the plurality of layers. 
     
     
         20 . A current transformer device comprising:
 a current transformer for producing a secondary electrical current via magnetic induction responsive to a primary electrical current flowing through a line;   said current transformer having at least a two piece separatable magnetic core couplable for surrounding a portion of the line;   said magnetic core comprising of a magnetic material that is characterized by having a magnetic saturation characteristic of silicon steel or less;   said current transformer for outputting said secondary electrical current.   
     
     
         21 . The current transformer device unit as defined in  claim 20 , further comprising a converting unit for converting said secondary electrical current into electrical current power. 
     
     
         22 . The current transformer device unit as defined in  claim 21 , wherein said converting unit converts said electrical current power to one of the following: direct and alternating electrical current power. 
     
     
         23 . The device as defined in  claim 20 , wherein the magnetic core comprises a plurality of layers of the magnetic material. 
     
     
         24 . The device as defined in  claim 23 , wherein there is no gap between each of the plurality of layers.