Siemens SINAMICS G150 Operating Instructions Manual page 135

Connecting the braking resistor
Danger to life due to fire caused by ground fault / short-circuit for non-protected
connections to the braking resistor
Non-protected connections to the braking resistor can cause fire with smoke in the event of
a short-circuit or ground fault that can cause severe injuries or death.
• Route the cables to the braking resistor so that a ground fault or short-circuit can be
• Comply with local installation regulations that enable this fault to be ruled out.
• Protect the cables from mechanical damage.
• Apply one of the following measures:
NOTICE
Material damage when exceeding the maximum permitted cable length
Exceeding the maximum permitted cable length to the braking resistor can cause material
damage in the event of component failure.
• Observe the maximum cable length between the cabinet unit and the braking resistor of
The -X5 terminal block for connection of the external braking resistor is located in the left
Basic Line Module (+H.A29).
Table 4- 36
Terminal
Max. connectable cross-section: 70 mm²
Recommended connection cross-section: 50 mm².
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
WARNING
ruled out.
– Use cables with double insulation.
– Observe adequate clearances, e.g. through the use of spacers.
– Route the cables in separate cable ducts or pipes.
100 m.
Terminal block -X5 – connection for external braking resistor
1 Braking resistor connection
2 Braking resistor connection
Description of function
Electrical installation
4.10 Other connections
135