Electrical installation
4.9 Additional connections
Enclosed Drives
134
Operating Instructions, 12/2018, A5E36652151A
Figure 4-24 Dimension drawing of braking resistor rated 50 kW - Specifications in inches (mm)
Connecting the braking resistor
WARNING
Fire caused by ground fault / short-circuit for non-protected connections to the braking
resistor
Non-fused connections to the braking resistor can cause fire with smoke generation in the
event of a short-circuit or ground fault and cause serious injuries or death.
•
Install the connections to the braking resistor in such a way that a ground fault or short-
circuit can be excluded.
•
Comply with local installation regulations, which allow this fault to be ruled out.
•
Protect the cables from mechanical damage.
•
Take one of the following measures:
–
Use cables with double insulation.
–
Observe adequate clearances, e.g. through the use of spacers.
–
Route the cables in separate cable ducts or pipes.
Summary of Contents for SINAMICS S150 NEMA
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