Safety Components And Functions; External Safety Components - Siemens SINAMICS GL150 Operating And Installation Instructions

Description
3.2 Safety concept
The safety concept encompasses safety components and functions to protect the device and
operators. The converter is also equipped with monitoring functions to protect external
components.
The converter operates safely when the interlock and protection systems are functioning
properly. Nevertheless, there are areas on the converter that are hazardous for personnel and
that cause material damage if the safety information of all the instructions and the labels on
the converter are not strictly observed.
3.2.1

Safety components and functions

Shock protection is ensured by means of a housing that conforms to EN 60204-11.
Monitoring of the door limit switches causes the converter to switch off if one of the doors of
the power unit is opened.
Insufficient grounding
High voltages are still present in the converter even after it has been shut down. If live parts
are touched, this can result in death or severe injury.
The converter does not have a grounding breaker. The system operator must, therefore,
ensure that there is sufficient grounding.
Ensure sufficient grounding during work on the power unit. Further information on grounding
can be found under "Safety information for maintenance and repairs".
See also
Grounding the system (Page 104)
3.2.2

External safety components

The safety concept of the converter is supplemented by the following external components:
● Circuit breaker
● Input-side transformer
28
DANGER
You can find more detailed information in the section "Circuit breaker (provided by the
customer)".
When an error is detected, the medium-voltage transformer limits the short-circuit current
and is configured in such a way that the maximum permissible short-circuit current (see the
technical data) is not exceeded.
SINAMICS GL150 6SL38503UM114PA0Z
Operating Instructions 04/2017