Siemens Simatic S7-1500H - Page 173

Overall configuration of S7‑1500R/H
The figure below shows the overall configuration of the S7-1500R/H redundant system (load
current supply and grounding concept) with supply from a TN-S network.
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① Main switch
② Short-circuit and overload protection
Figure 7-1Operating the S7‑1500R/H with grounded reference potential
NOTE
If you connect the S7-1500R/H redundant system via upstream local power supplies to your
own distribution (or batteries), then you do not have to provide any additional protective
measures against overvoltage.
173
Wiring
7.2 Operation on grounded infeed
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD