Description
2.9 Self-monitoring and diagnostics
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
185
2.9.4 Trip log
Up to 20 trips can be stored in the trip log of the ETU600 electronic trip unit. The trip log
takes the form of a circular buffer.
Each trip by the ETU600 electronic trip unit is stored with the following information:
• Trip number (1)
• Trip cause (6) with indication of the phase (2) and the associated setting (3)
• Time stamp (4)
• Last measured values before tripping (5)
Note
No external power supply of the ETU600 is required for the trip log function, but is
recommended. In the case of a self
-powered electronic trip unit, the contents of the trip
log may be lost if the ETU600 power supply is interrupted while writing the trip
log.
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