Siemens Simatic S7-1500 - Page 263

Wiring
8.2 Operation on grounded infeed
S7-1500R/H redundant system
262 System Manual, 01/2024, A5E41814787-AF
Short-circuit and overload protection
Various measures as protection against short-circuits and overloads are required for setting
up a full installation. The nature of the components and the degree to which the required
measures are binding depends on the IEC (DIN VDE) regulation applicable to your plant
configuration. The table refers to the following figure and compares the IEC (DIN VDE)
regulations.
Table 8- 1 Components and required measures
Reference to follow-
ing figure
IEC 60364
(DIN VDE 0100)
IEC 60204
(DIN VDE 0113)
Shut-off device for control system, sen-
sors, and actuators
①
Main switch
Disconnector
Short-circuit and overload protection:
In groups for sensors and actuators
② Single-pole protection of
circuits
• With grounded sec-
ondary circuit: Single-
pole protection
• Otherwise: All-pole
protection