Siemens Industrial Ethernet Switches SCALANCE X-200 User Manual
Page 15
Safety notices
1.1 Important notes on using the device
SCALANCE X-200
Operating Instructions, 12/2011, A5E00349864-19
15
WARNING
Suitable cables for temperatures in excess of 70 °C
If the cable or conduit entry point exceeds 70 °C or the branching point of conductors
exceeds 80 °C, special precautions must be taken. If the equipment is operated in an air
ambient in excess of 50 °C to 70 °C, only use cables with admitted maximum operating
temperature of at least 80 °C.
WARNING
Protection against transient voltage surges
Provisions shall be made to prevent the rated voltage from being exceeded by transient
voltage surges of more than 40%. This criterion is fulfilled, if supplies are derived from
SELV (Safety Extra-Low Voltage) only.
See also