济南变频器维修：变频器本身就是干扰源 透过动力线来干扰其他电器元件 要解决此干扰最有效的方法就是有效接地 接地的目的就是要将此杂讯(电场造成感应电)排除 无法排除还会乱窜当然就故障原因
Jinan frequency converter maintenance: the frequency converter itself is the interference source, which interferes with other electrical components through the power line. The most effective way to solve this interference is to effectively ground. The purpose is to eliminate this noise (induced electricity caused by electric field). It can't be ruled out, and it will also run in disorder. Of course, the cause is the fault.
A 动力线截面积不够尤其接地线 无法将感应电排除
A. the cross-sectional area of the power line is not enough, especially the ground wire cannot eliminate the induced electricity.
B 整场接地线带电 不仅无法排除 还反相进入
B. the electrified ground wire of the whole field is not only unable to be excluded, but also enters in reverse phase.
C 火线当零线用 造成电柜漏电
C. leakage of electric cabinet caused by the use of live wire as zero line
D. short circuit leakage caused by the rupture of power line cladding.
1. The insulation of the motor is damaged, resulting in a short circuit to the ground;
2. Wiring errors, such as PE and N, lead to leakage;
3. False alarm caused by strong interference around;
4. The ground wire is not correctly connected, or the ground resistance is not enough.