Siemens SINAMICS S120 Equipment Manual page 145

Please note the following
● It is only permissible to use a delayed tripping, selective AC/DC-sensitive residual-
● The max. permitted grounding resistance of the "selective protective equipment" is
● Accessible parts of the Power Drive System and the machine are connected to the
● The total length of the shielded power cables in the drive line-up (motor cables incl. line
● Only recommended line filters must be used during operation.
● Only one residual-current circuit-breaker may be connected in series (cascading is not
● Switching elements (main power switch, contactor) for connecting and disconnecting
Recommendation
SIEMENS selectively switching AC/DC-sensitive residual-current circuit-breakers in
accordance with EN 61009-1 of the 5SM series (e.g. 5SM3646-4 or 5SM3646-4+5SW3300
with an auxiliary disconnector (1 NC contact/1 NO contact) for a rated current of 63 A and
rated fault current of 0.3 A (see catalog "BETA Modular Installation Devices - ET B1")).
NOTICE
AC or pulse-sensitive RCCBs are not suitable.
Booksize power units
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
current circuit-breakers, Type B.
included (83 Ω max. for residual-current circuit-breakers with 0.3 A rated differential
current).
system's protective ground conductor.
supply cables from line filters to the connecting terminals of the line module) must be
less than 350 m.
possible).
the drive group have max. 35 ms delay time time between the closing/opening of the
individual main contacts.
Line Connection Booksize
2.13 Line connection variants
145