Siemens SENTRON 3VA27 - Features and Options

Description
2.8 Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
69
2.8.4.2
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
ETU320
LI
ETU350
LSI
ETU360
LSIG
ETU650
LSI
ETU660
LSIG
Line protection
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Generator protection
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Residual current (Rc) protection function
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—
—
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Ground-fault protection with current measure-
ment at the star point (G
RET
)
— — — ● ●
MCR protection function - making current relea-
se during closure
— — — ● ●
Monitoring of direction of power flow and power
factor determination (with metering function MF)
— — — ● ●
2nd parameter set
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—
—
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Equipment
ETU320
LI
ETU350
LSI
ETU360
LSIG
ETU650
LSI
ETU660
LSIG
Display (LCD)
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—
—
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Setting with rotary coding switch
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—
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
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—
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Metering function as option MF Advanced
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—
—
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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
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Communication
ETU320
LI
ETU350
LSI
ETU360
LSIG
ETU650
LSI
ETU660
LSIG
Communication Modbus RTU, Modbus TCP,
PROFIBUS, or PROFINET as an option
— — — ● ●
Write protection for communication
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—
—
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Deactivation of communication for access from
external
— — — ● ●