Siemens SINUMERIK 840D sl Manual page 90

Connection of the Components
5.1 Power Supply Interface Variants
Note
A direct connection to a power system with selectively tripping AC/DC-sensitive residual-
current circuit-breakers is only possible with the 5 kW, 10 kW, 16 kW and 36 kW Line
Modules because suitable residual-current devices with higher ratings are not available as
qualified products.
Figure 5-5
Please note the following:
● It is only permissible to use a delayed tripping, selective AC/DC-sensitive residual-current
● The max. permitted grounding resistance of the "selective protective equipment" is
● Parts of the electrical equipment and machine that can be touched are integrated in a
5-6
Residual-current circuit-breaker (RCCB)
circuit-breakers, Type B.
included (83 Ω max. for residual-current circuit-breakers with 0.3 A rated differential
current).
protective grounding system.
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0