Siemens SINAMICS G120P Operating Instructions Manual - Page 22

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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

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

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