The safety concept encompasses safety components and functions to protect the device and
operators. The device is also equipped with monitoring functions to protect external
components.
The device operates safely when the interlock and protection systems are functioning properly.
Nevertheless, there are areas that are hazardous for personnel and that cause material damage
if the safety information of all the instructions and the labels on the device are not strictly
complied with.
3.2.1
Safety components and functions
Note
Safety components and functions
In the manual of the installed converter, inform yourself about the safety components that are
installed and their associated functions.
DANGER
Insufficient grounding
High voltages can still be present even after shutdown. If live parts are touched, this can result
in death or severe injury.
A grounding switch is not installed. 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".
3.2.2
External safety components
The safety concept of the converter is supplemented by the following external components:
• Circuit breaker
You can find more detailed information in the section "Circuit breaker (provided by the
customer)".
• Input-side transformer
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.
Description
3.2 Safety concept
3rd Party LCI Control Upgrade
24
Operating Instructions, 02/2022, A5E31872818
