● Damage from pressure build-up during electric arcs in the event of a fault
If the dimensions of the building have not been designed correctly for the drive, damage
can result from the pressure that may build up inside.
● Dangerous electric arcs during internal faults
The drives are designed according to the relevant IEC standards and have been tested in
line with strict type-testing procedures. They were developed and manufactured so that
there is a very low probability of internal faults occurring. However, internal faults cannot
be completely ruled out.
WARNING
Dangerous electric arcs during internal faults
Defects such as damage to components, overvoltages, or loose parts, as well as exceptional
operating statuses, can cause a failure within the enclosure. This can result in an internal
electric arc. If an electric arc occurs and people are nearby, this could lead to death, serious
physical injury, and damage to property.
● Ensure that only qualified personnel perform work on the drive.
● Observe the safety and operating instructions in this documentation and on labels at the
drive for all work on the drive.
Note
There are no standards for medium-voltage drives stipulating requirements or inspections for
electric arc resistance. There is therefore neither formal guidance provided nor formal
certification available with regard to electric arc resistance.
Safety information
2.8 Residual risks
SINAMICS GL150 6SL38503UM114PA0Z
26 Operating Instructions 04/2017
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