DC link components
5.2 Braking resistors
SINAMICS S110
110 Manual, 07/2015, 6SL3097-4AC10-0BP5
Safety instructions for blocksize braking resistors
Danger to life if the fundamental safety instructions and residual risks are not heeded
Failure to heed the fundamental safety instructions and residual risks in Chapter 1 can
result in accidents causing severe injuries or death.
• Follow the fundamental safety instructions.
• Consider the residual risks on the risk assessment.
Risk of fire and device damage as a result of ground fault / short-circuit
The cables to the braking resistor 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.
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