Ac Power Connection For Programmers; Cabinet Lighting - Siemens S5-155U System Manual

Wiring of Programmable Controllers for EMC
AC power connection for
programmers

Cabinet lighting

3 - 20
A power socket should be fitted in each cabinet for the AC supply to
programmers. The sockets should be powered from the distribution
system to which the protective conductor for the cabinet is also
connected.
Use incandescent bulbs, such as LINESTRA lamps, for cabinet
lighting. Avoid using fluorescent lamps because they generate
interference fields. If the use of fluorescent lamps cannot be avoided,
apply the measures shown in the following figure.
Screen Over the Lamp
Figure 3-7 Measures for Interference Suppression of Fluorescent Lamps
in a Cabinet
Shielded Cable
Metal-Enclosed Switch
AC Filter or
Shielded Power Cable
System Manual
C79000-B8576-C199-03