Siemens SENTRON 3WL10 Series Manual page 67

Measured values of the ETUs of the 3-series
Maintenance displays
Information on the last 30 trips
Information on the last 200 events
Number of mechanical switching
operations
1)
Total number of trips
Operating hours counter
Contact wear
Date of maintenance performed
Direction to perform necessary
maintenance
Key data
Self-diagnostics
Open-circuit detection
Watchdog: constant CT monitoring,
monitoring of the electronics and
tripping coil
Temperature (T)
If auxiliary power supply is connected
1)
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
Parameter
Type of protection function, fault values, and time stamp
Type of event, time stamp
No. Can be assigned to alarm
No. —
h —
% Pre-alarm > 80 %
Alarm = 100 %
Last
––
Type of circuit breaker, name assigned to the device, serial number
Parameter
Alarm due to
disconnection Current
transformer, rating
plug, tripping coil
Pre-alarm and alarm
due to overheating
2.4 Electronic trip unit ETU
Precision
Optional: Only alarm or tripping of the circuit
breaker
Description
65