Manufacturing method of shielding device of bus-type current transformer

The invention discloses a method for manufacturing a shielding device of a bus type current transformer, which comprises the following steps of: 1) manufacturing a shielding net: cutting a metal wire net and manufacturing the metal wire net into a cylindrical shape, welding rectangular metal foil at the root part of an insert, and then symmetrically welding the insert on the metal wire net in the middle; a shielding net is tightly attached to the inner surface of the mold, a metal foil is folded into an umbrella shape, the two ends of the metal foil are tightly attached to a metal wire net, the insulation distance is adjusted, the mold is closed, and the embedded nut and the insert are fastened again; 3) pouring: pouring the iron core, the secondary winding, the shielding net and the metal bracket into an integrated structure insulator by adopting epoxy resin; and (4) assembling: a stud is additionally arranged on the insert on the inner surface of the insulator, a spring is sleeved on the stud, a bolt penetr