JUMO 709051, Руководство по эксплуатации, Страница: 19 / 92

V1.00/EN/00741192/2021-03-30 [IPC 300] 19
2 Mounting
and not exceed 50 m.
Ground The base plate, the mains filter, and the shielding of the supply line must be
earthed to a star point using HF strand.
Choosing the
suitable line
k
If the line between the filter and the IPC 300 is longer than 300 mm, we rec-
ommend to use a shielded line with the shielding earthed on both sides.
Route cables inside the control cabinet as close as possible to the ground
potential, as otherwise they can act as antennae and emit interference.
k
To achieve a good shielding effect for the line, only use lines that have
shielding made with tin-plated or nickel-plated copper braiding. The cover-
age of the shielding should be at least 70 %; the lay angle should be 90°.
Shielding made of steel braiding is not suitable, however. Ground the
shielding of the load line on both sides.
k
The shielding of the control input lines must only be grounded at one end
(IPC 300 side). If there are differences in potential, an additional potential
equalization line must be installed.