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44.3. Thermal Protection Trip Delay
The graph below shows the thermal protection trip delay depending on the IEC Class and the current flowing (which is
supposed to be constant).
Parameter C266 (trip current) is factory set to 105%.
Figure 68: Trip delay of alarm A075 based on the IEC Class
Example: The protection level is compliant with IEC Class 30. If the current flowing is 200% of the FLC, alarm A075 will
trip after approx. 480s (8 minutes).