Siemens SENTRON 3WL10, Manual

Page: 53 / 234

Description
2.4 Electronic trip unit ETU
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
51
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
ETU320
LI
ETU350
LSI
ETU360
LSIG
ETU650
LSI
ETU660
LSIG
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 — — — ● ●