Low loss: Because the three-dimensional core dry type transformer has the characteristics of small joint magnetic resistance, the magnetic circuit of the corner is consistent with the magnetic direction of the silicon steel sheet, the winding tight filling coefficient is high, and the iron core is light. Compared with the traditional stacked core dry transformer, the no-load loss Po can be reduced by 18%-28%. The no-load current Io drops by 50%-60%. The energy saving effect is remarkable and the operation is economical.
Low noise: The noise level of the three-dimensional core dry-type transformer is 5-10 dB lower than that of the stacked iron core transformer.
Low partial discharge: the resin mixed material adopts foreign advanced stirring method and vacuum film degassing technology to make the mixed material stir evenly, completely eliminates the bubbles in the middle of the mixture, and the high and low voltage coils are all poured under vacuum pressure, and the resin insulation has Fully encapsulated, the layer also has complete permeability. The partial discharge of the product is controlled below 5PC. The cast body has a dense solidified structure, which is flame retardant, explosion-proof and does not pollute the environment.
High mechanical strength: The three-dimensional coil core adopts a circular core cross section, and the short-circuit resistance is better than the long round section. The resin with filler has a small difference in expansion coefficient in the casting body, a small curing shrinkage rate, a small internal stress, and a high hardness of the cured product, and a pre-formed reinforcing material is placed in the epoxy resin encapsulating layer on the inner and outer surfaces of the high and low voltage coils. With a dense structure like reinforced concrete, the mechanical strength is much greater than that of pure epoxy resin, so the product can withstand sudden short-circuit electric power without damage.
Junction group label
Short circuit resistance（%）
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