Siemens S5-135U/155U AC Power, Connection for, Programmers, Cabinet Lighting, Following figure

Installation Guidelines

AC Power	A power socket should be fitted in each cabinet for the AC supply to
Connection for	programmers. The sockets should be powered from the distribution system to
Programmers	which the protective conductor for the cabinet is also connected.
Cabinet Lighting	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
				Shielded Cable
				Metal-Enclosed Switch
				AC Filter or
				Shielded Power Cable
	Figure 3-7		Measures for Interference Suppression of Fluorescent Lamps in a
			Cabinet

3-18	System Manual
	C79000-G8576-C199-06