Specifically, the transformer has three sound sources. One is the core, the other is the winding, and the third is the cooler, which is the sum of the noise caused by the no-load, load and cooling system. The cause of the noise generated by the iron core causes the silicon steel sheet constituting the core to undergo a slight change under the action of the alternating magnetic field, that is, magnetostriction, and the magnetostriction causes the iron core to periodically vibrate with the change of the excitation frequency. The reason why the winding generates vibration is that the current generates electromagnetic force in the winding, and the leakage magnetic field can also cause the structural member to vibrate, and the electromagnetic force (and the vibration amplitude) is proportional to the square of the current. Therefore, the transmitted power has a significant relationship with the load current.
The causes and solutions for abnormal noise of dry transformers are as follows:
AL/CU Universal Terminal Block
Cable Terminal Block,Universal Terminal Block,Waterproof Terminal Block,Low Voltage Terminal Block
ZHEJIANG QIANNA ELECTRIC CO.,LTD , https://www.traner-elec.com