Siemens SENTRON 3WL10 - Page 53

Protection functions
Protection functions of the electronic trip units ETU320
LI
ETU350
LSI
ETU360
LSIG
ETU650
LSI
ETU660
LSIG
Rotary coding switch Display (LCD)
Protection functions
Overload protection (LT) ● ● ● ● ●
Short-time-delayed short-circuit pro‐
tection (ST)
— ● ● ● ●
Instantaneous short-circuit protec‐
tion (INST)
● ● ● ● ●
Neutral protection (N) ● ● ● ● ●
Ground-fault protection (GF) — — ● — ●
Enhanced protection functions
Making current release (MCR)
1)
— — — ● ●
Current unbalance protection (I-NBA) — — — ● ●
DAS protection - arc fault mitigation
mode
— — — ● ●
Ground fault return (G
ret
)
1)
— — — — ●
2nd parameter set (setA/B) — — — ● ●
 With metering function
MFAdvanced
Residual current protection (Rc) — — — — ●
2)
Direct short-time protection (DST) — — — ● ●
Voltage unbalance protection (V-
NBA)
— — — ● ●
Undervoltage protection (V
u
) — — — ● ●
Overvoltage protection (V
o
) — — — ● ●
Underfrequency protection (f
u
) — — — ● ●
Overfrequency protection (f
o
) — — — ● ●
Reverse active power protection (RP) — — — ● ●
Phase sequence check L1-L3 — — — ● ●
COS PHI protection (alarm/trip) — — — ● ●
1)
Breaker Connect module required for auxiliary power supply
2)
Summation current transformer (Rc CT) and rating plug (Rc) required to permit the protection function
Description
2.9Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
52 Equipment Manual, 10/2023, L1V30499596002-03