• Categories:FAQ
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• Time of issue:2022-03-14
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(Summary description)Iron core noise is the main part of transformer noise, and reducing iron core noise is the main means to reduce transformer noise. The core noise can be reduced by the following methods:
1) Use adhesive coating to increase the adhesion between C-type iron chips.
2) When the C-type iron core is assembled, apply high-strength adhesive on the end face to bond the two ends to eliminate the end face impact.
3) Use an iron core material with a small magnetostriction coefficient, such as a silicon steel strip with a silicon content of 6.5%, to reduce the noise generated by the magnetostriction phenomenon.
4) E and I iron chips punched from the same roll of material.
5) The iron core and transformer are impregnated with impregnating materials with high bonding strength and small shrinkage.
In addition, use packing steel tape with high tensile strength and low elongation; when winding the coil with thick wire or copper tape, it should be wound tightly, fully and flatly; improve the mechanical strength of the installation parts; pay attention to the installation position and direction, Avoiding acoustic resonance and using sound-absorbing materials are all effective ways to reduce transformer noise.