Description
2.8 Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
47
2.8.1
Description of functions
Protection
Electronic
ETUs of the 3-series
Electronic with display
ETUs of the 6-series
Trip units
ETU320, ETU350, ETU360
Line / generator protection
ETU650, ETU660
Line / generator / motor protection
Parameter assignment
Setting parameters with rotary coding
switch
•
Setting the parameters with push-
buttons and reading them off the
display and communication
•
Fine adjustment of the parameters
•
Reading off the measured values
Enhanced protection function
—
•
2nd parameter set (set A/B)
•
Making current release (MCR)
•
DAS - Arc-fault-mitigation
•
Ground fault protection in the star
point
•
Phase unbalance
•
Further functions in conjunction with
metering function Advanced, which
include the voltage, the directions of
power flow in the protection archi-
tecture or can detect residual cur-
rents more precisely
Communication
—
Optional
Metering function
—
Optional