Installation Guidelines

3.7Selection and Installation of Cabinets with SIMATIC S5

The following criteria must be observed when selecting and dimensioning a cabinet:

SAmbient conditions at the point of installation of the cabinet

SClearances for power supplies and subracks

STotal power dissipation of components in the cabinet

The ambient conditions at the point of installation of the cabinet (temperature, humidity, dust, effects of chemicals) govern the required degree of protection of the cabinet (IP XX) as shown in the following figure. Further information on types of protection can be found in IEC 529.

System Manual

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C79000-G8576-C199-06

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Siemens S5-135U/155U appendix Selection and Installation of Cabinets with Simatic S5