Safety Instructions For Braking Resistors - Siemens SINAMICS S120 Combi Manual

7.3.2

Safety instructions for braking resistors

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 that enable this fault to be ruled out.
• Protect the cables from mechanical damage.
• In addition, apply one of the following measures:
Burns due to high surface temperatures
The braking resistor can become very hot. You can be severely burnt when touching the
surface.
• Mount the braking resistor so that it cannot be touched. If this is not possible, attach a
• To prevent adjacent components from suffering damage due to these high
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
WARNING
– Use cables with double insulation.
– Maintain adequate clearance, e.g. using spacers.
– Route the cables in separate cable ducts or pipes.
CAUTION
clearly visible and understandable warning notice at hazardous positions.
temperatures, maintain a clearance of 100 mm on all sides of the braking resistor.
DC link components
7.3 Braking resistors
177