Siemens SENTRON 3VA27 - Page 60

Description
2.8 Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
58 Manual, 10/2018, L1V30499596002-01
Additional functions
ETU320
LI
ETU350
LSI
ETU360
LSIG
ETU650
LSI
ETU660
LSIG
Rotary coding switch
Display (LCD)
Display of alarms and trip log memo-
ry in OFF status of the circuit brea-
ker and the ETU
With LED signal On the display (LCD)
With test device TD420 on ETU front interface
Data log with internal high resolution
memory
— — — ● ●
Enhanced testing and
analysis of protection functions
● ● ● ● ●
With gateway device TD410/TD420 on ETU front interface
Read/write maintenance info,
contact wear, history, time
● ● ● ●
(&LCD
&COM)
●
(&LCD
&COM)
Record of a measuring interval me-
mory and min/max registers (in
ETU)
● ● ● ●
(&LCD
&COM)
●
(&LCD
&COM)
Diagnostic report
●
●
●
●
●
Enhanced settings
TD410 / TD420
TD410 / TD420 or LCD
Watchdog: steady electronics or
maglatch or CT failure surveillance:
trip enable
● ● ● ● ●
Overtemperature: trip enable
●
●
●
● ●
Thermal memory disable — — — ● ●
LT protection disable
—
—
—
●
4)
●
4)
Pre-alarm threshold PAL - function
trigger on x I
n
/I
r
— — — ● ●
Software-guided parameterization
(powerconfig)
— — — ● ●
I
4
t overload characteristic &
INST = OFF setting for highly selec-
tive applications
— — — ● ●
4)
L = OFF type of rating plug required to be able to switch off the protection function LT