Shielding ring, shielding structure and casting type voltage transformer
A technology of voltage transformers and shielding rings, applied in inductors, transformers, magnetic field/electric field shielding, etc., can solve the problems of irregular deformation of metal shielding rings, low product casting qualification rate, inconsistent shrinkage, etc., to avoid air gaps. or cracking, ensuring the casting quality and shielding effect, and improving the casting qualification rate
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[0022] Embodiments of the casting type voltage transformer of the present invention, such as Figure 1-4 As shown, the cast-type voltage transformer includes an annular iron core 1 and a primary winding 2 wound on the upper side of the iron core 1. Both ends of the outer circle of the primary winding 2 are provided with shielding rings. The shielding ring includes a circular cross-section The rubber ring 3, the outer half of the rubber ring 3 is wrapped with semi-conductive crepe paper 4, the rubber ring 3 is made of EPDM rubber material, and its inner diameter is smaller than the outer diameter of the primary winding 2mm; the shielding ring is bonded to the primary winding 2 with conductive adhesive At the end of the outer circle, the conductive glue ensures the reliable connection between the rubber ring 3 and the primary winding 2 .
[0023] The casting type voltage transformer of the above embodiment is provided with a shielding ring at the outer circular end of the primar...
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