FOXBORO LEXG-L 歧管

FOXBORO LEXG-L 歧管

中海德（福建）工业设备有限公司

具体来说，变压器噪声共有三个声源，一是铁心，二是绕组，三是冷却器，即空载、负载和冷却系统引起噪声之和。铁心产生噪声原因是构成铁心硅钢片交变磁场作用下，会发生微小变化即磁致伸缩，磁致伸缩使铁心随励磁频率变化做周期性振动，铁心磁致伸缩变形和绕组、油箱及磁屏蔽内电磁力所引起。

绕组产生振动原因是电流绕组中产生电磁力，漏磁场也能使结构件产生振动。电磁噪声产生原因是磁场诱发铁心叠片沿纵向振动产生噪声，该振动幅值与铁心叠片中磁通密度及铁心材质磁性能有关，而与负载电流关系不大。电磁力(和振动幅值)与电流平方成正比，而发射声功率与振动幅值平方成正比。

春已过半，桃花朵朵开，一路繁华，一路向暖。

阳春布德泽，草与水同色，春风细雨岸，万物生光辉。

微笑面对一切，用心去感受，这个季节的温暖，努力拥抱，新的生活。

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