Siemens SINAMICS GL150, Operating Instructions Manual, Page: 29 / 168

3.2.3 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.
3.2.4 Protection and monitoring functions of internal components
The internal components of the converter have the following protection and monitoring
functions:
● Converter protection based on monitoring systems:
– Current monitoring
– Output voltage monitoring
– Thermal monitoring of the DC link reactor
– Insulation monitoring
– Supply voltage monitoring
– Circuit breaker monitoring
– Heat exchanger unit monitoring
● Shutdown in the event of semiconductor failure
● Shutdown in the event of control component failure
● Internal protection functions for the control hardware
● Protection against communication failure between the closed-loop control and the power
unit
● Anti-condensation heating
3.2.5 Protection and monitoring functions for external components
Transformer and motor can be monitored in the device. A fast protective shutdown that you can
activate for external problems, e.g. short-circuits, is present.
Description
3.2 Safety concept
SINAMICS GL150 6SL38555UN113KA0Z
Operating Instructions Rev.201910281450 EXAMPLE
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