Siemens SINAMICS G120P Operating Instructions Manual page 22

Electrical installation
Risk of fire due to ground fault/short-circuit
Inadequate installation of the cables to the Power Module DC link can result in a ground
fault/short-circuit and place persons at risk as a result of the associated smoke and fire.
• Use the local installation regulations to avoid this fault.
• Protect the cables against mechanical damage.
• Also implement one of the following measures:
Note
Cable lengths
Keep the connecting cables to the Power Module as short as possible (max. 5 m).
Tightening torques for screw connections
The following tightening torques apply when tightening connections of operating current-
conducting parts (busbars), non-operating current-conducting parts (ground connections,
ground terminal connections), and general steel threaded connections.
Table 4- 2
22
WARNING
– Use cables with double insulation.
– Maintain adequate clearance, e.g. by using spacers.
– Lay the cables in separate cable ducts or conduits.
Tightening torques for screw connections
Thread
M6
M8
M10
M12
Ground connections, protective
conductor connections, steel
threaded connections
(fault current-conducting)
10 Nm
25 Nm
50 Nm
88 Nm
Plastic, busbars (operating current-
conducting)
13 Nm
25 Nm
50 Nm
dV/dt filter plus Voltage Peak Limiter
Operating Instructions, 04/2014, A5E32847105B AB
6 Nm