Strong electromagnetic interference on electronic systems, electronic equipment interference, especially sensitive electronic equipment due to overload and damage. Among the many models of cables, even shielded control cables with metal braided shielding, it is difficult to escape electromagnetic and radiation interference on the cable.
To avoid the influence of external electric fields on the instrumentation, a cavity conductor is used to shield the external electric fields from the inside.
Multi-core low-voltage shielded control cables in the electrical control cable shielding layer are not properly handled, the control cable and power cable are confused together, and no separation is done.