Siemens SENTRON 3WL10 Series Manual page 41

Protection functions
Protection functions of the electronic trip units
Protection functions
Overload protection (LT)
Short-time-delayed short-circuit
protection (ST)
Instantaneous short-circuit
protection (INST)
Neutral protection (N)
Ground-fault protection (GF)
Enhanced protection functions
Making current release (MCR)
Current unbalance protection
(I-NBA)
DAS protection - arc fault mitigation
mode
Ground fault return (G
2nd parameter set (set A/B)
Residual current protection (Rc)
Direct short-time protection (DST)
Voltage unbalance protection
(V-NBA)
Undervoltage protection (V
Overvoltage protection (V
Underfrequency protection (f
Overfrequency protection (f
Reverse active power protection
(RP)
Phase sequence check L1-L3
COS PHI protection (alarm/trip)
Breaker Connect module required for auxiliary power supply
1)
Summation current transformer (Rc CT) and rating plug (Rc) required to permit the protection function
2)
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
ETU320
LI
●
—
●
●
—
—
1)
—
—
) —
1)
ret
—
—
—
—
) —
u
) —
o
) —
u
) —
o
—
—
—
ETU350 ETU360
LSI LSIG
Rotary coding switch
● ●
● ●
● ●
● ●
— ●
— —
— —
— —
— —
— —
— —
— —
— —
— —
— —
— —
— —
— —
— —
— —
Description
2.4 Electronic trip unit ETU
ETU650 ETU660
LSI LSIG
Display (LCD)
● ●
● ●
● ●
● ●
— ●
● ●
● ●
● ●
— ●
● ●
With metering function
MF Advanced
— ●
2)
● ●
● ●
● ●
● ●
● ●
● ●
● ●
● ●
● ●
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