Siemens SENTRON 3WL10 Series Manual page 53

Features and options
The electronic trip unit is available in two basic versions:
● Electronic trip unit of the 3-series with rotary coding switches
● Electronic trip unit of the 6-series with LC display and modularly expandable functionality
Protection
Line protection
Generator protection
Residual current (Rc) protection function
Ground-fault protection with current measurement
at the star point (G )
RET
MCR protection function - making current
release during closure
Monitoring of direction of power flow and power
factor determination (with metering function MF)
2nd parameter set
Equipment
Display (LCD)
Setting with rotary coding switch
Setting via control buttons next to the ETU display
Data display via control buttons next to the
ETU display
Metering function as option MF Basic
Metering function as option MF Advanced
Internal I/O module IOM040 with 2 inputs and
2 outputs as an option
External I/O module IOM300 with 10I and 11O as an
option
Front interface for parameterization, testing, and data
read-out
Communication
Communication Modbus RTU, Modbus TCP,
PROFIBUS, or PROFINET as an option
Write protection for communication
Deactivation of communication for access from external
Self-monitoring / diagnostics
Watchdog monitored (hardware, firmware)
(tripping or only alarm)
Continuous CT and tripping coil monitoring
(tripping or only alarm)
Protection by temperature monitoring
(can be deactivated)
Thermal memory (LT adaptation) can be deactivated
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
ETU320 ETU350
LI LSI
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2.4 Electronic trip unit ETU
ETU360 ETU650
LSIG LSI
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Description
ETU660
LSIG
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