解析電纜中產(chǎn)生噪音的原因有哪些？

1、介質(zhì)本身內(nèi)部分子摩擦；
1, the medium itself molecular friction;
   2、電纜電容的改變；
2, the cable capacitance change;
   3、電纜介質(zhì)的壓電效應；
Piezoelectric effect 3, cable dielectric;
   4、電纜中導體和介質(zhì)摩擦產(chǎn)生電荷，即當導體和絕緣之間接觸破壞時產(chǎn)生電荷的分離。  
The charge generating conductor and dielectric friction 4, cable, separation when the conductor and insulation between the contact damage produce charge.
   在聚乙烯絕緣表面擠上一層薄薄半導電（厚度0.20-0.30mm）的低噪音電纜得到了迅速的發(fā)展，其噪音值在2-3mV，對于工作在400度的低噪音電纜，可采用耐高溫半導電纖維繞包的辦法來解決，其噪音可達5mV。
In the polyethylene insulation surface squeeze on a thin layer of semi conductive (thickness 0.20-0.30mm) low noise cable obtained the rapid development, the noise value in 2-3mV, for the work in the 400 degree low noise cable, can use high temperature resistant semi conductive fiber winding package solution, the noise of up to 5mV.