Siemens SINAMICS S120 System Manual page 142

DC link adapter
9.2 Safety instructions for the DC link adapter
Risk of fire and device damage as a result of ground fault/short-circuit
The DC link connecting cables must be routed so that a ground fault or short circuit can be
ruled out. A ground fault can result in fire with associated smoke.
• Comply with local installation regulations, which allow this fault to be ruled out.
• Protect the cables from mechanical damage.
In addition, apply one of the following measures:
• Using cables with double insulation.
• Observe adequate clearances, e.g. through the use of spacers.
• Route the cables in separate cable ducts or pipes.
Risk of fire due to overheating when permissible cable lengths are exceeded
Excessively long DC link cables can cause components to overheat with the associated risk
of fire and smoke.
• Restrict the total length of the DC link including the connecting cables to a maximum of
NOTICE
Material damage due to loose power connections
Insufficient tightening torques or vibration can result in faulty electrical connections. This
can result in damage due to fire or malfunctions.
• Tighten all of the screws with the specified tightening torque.
• Check the tightening torques of all power connections at regular intervals and tighten
142
WARNING
WARNING
10 m.
them when required. This applies in particular after transport.
System Manual, (SH2), 04/2015, 6SL3097-4AH10-0BP3
High Frequency Drive