Installation and EMC guidelines
1.10 Control cabinet
SIMATIC TDC hardware
20 System Manual, 08/2017, A5E01114865-AL
● All control cabinets must be equipped with a grounding/equipotential busbar that must be
connected directly to the cabinet frame at both ends.
● It is not allowed to operate contactors without protective circuit in a control cabinet
containing SIMATIC TDC components.
● If contactors without protective circuit are operated in a control cabinet next to the
SIMATIC TDC cabinet, the cabinets must be partitioned by means of a sheet steel panel.
● All control cabinets in which SIMATIC TDC components are operated must be equipped
with a shielding busbar that must be connected directly at both ends to the cabinet frame.
● It is not allowed to use gas discharge lamps in the cabinet.
● The cabinet must be designed to enable unobstructed air convection.
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