Siemens SINAMICS G120C - Equipment damage due to electric fields or electrostatic discharge; Warranty and liability for application examples

Installing
3.2 Connecting
SINAMICS G120C, FSD ... FSF inverters
Compact Operating Instructions, 11/2016, FW V4.7 SP6, A5E39339884B AA
21
3.2.2
Branch circuit protection
WARNING
Danger to life due to electric shock and fire hazard caused by protective equipment tripping
too late
Overcurrent protective equipment that trips too late or not all can cause electric shock or
fire.
• In the case of a conductor-conductor or conductor-ground short-circuit, ensure that the
short-circuit current at the point where the inverter is connected to the line supply
corresponds as a minimum to the requirements of the protective equipment used.
• You must additionally use a residual-current protective device (RCD) if, for a conductor-
ground short circuit, the required short-circuit current is not reached. Especially for TT
line systems, the required short-circuit can be too low.
• It is not permissible that the short-circuit current exceeds the short-circuit current rating
(SCCR) of the inverter and the disconnecting capacity of the protective equipment.
Branch circuit protection according to the IEC standard
Table 3- 3 Permissible protective equipment according to the IEC standard
Frame
size
Rated power
Inverter article num-
ber
Article number, fuse
I
max
1)
Control
cabinet
2)
FSD
22 kW
6SL3210-1KE24-4…
3NA3824
3NE1820-0
80
≥ 0.6 m³
30 kW
6SL3210-1KE26-0…
3NA3830
3NE1021-0
100
37 kW
6SL3210-1KE27-0…
3NA3830
3NE1021-0
100
45 kW
6SL3210-1KE28-4…
3NA3832
3NE1022-0
125
FSE
55 kW
6SL3210-1KE31-1…
3NA3836
3NE1224-0
160
FSF
75 kW
6SL3210-1KE31-4…
3NA3140
3NE1225-0
200
90 kW
6SL3210-1KE31-7…
3NA3142
3NE1277-0
250
110 kW
6SL3210-1KE32-1…
3NA3250
3NE1230-0
315
132 kW
6SL3210-1KE32-4…
3NA3252
3NE1331-0
350
1)
Maximum rated current of the protection device.
2)
Minimum volume of the control cabinet in which the inverter is installed. The restriction applies only
for a protection with a circuit-breaker.