Description
2.4 Electronic trip unit ETU
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
39
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
protection (ST)
—
●
●
●
●
Instantaneous short-circuit
protection (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
Summary of Contents for SENTRON 3WL10
Page 1: ......
Page 2: ......
Page 8: ...Table of contents Air circuit breaker 3WL10 6 Manual 11 2017 L1V30499596002 01 ...
Page 170: ...Operation 6 3 Troubleshooting Air circuit breaker 3WL10 168 Manual 11 2017 L1V30499596002 01 ...
Page 180: ...Technical specifications Air circuit breaker 3WL10 178 Manual 11 2017 L1V30499596002 01 ...
Page 199: ...Air circuit breaker 3WL10 Manual 11 2017 L1V30499596002 01 197 Circuit diagrams 10 ...
Page 212: ...Circuit diagrams Air circuit breaker 3WL10 210 Manual 11 2017 L1V30499596002 01 ...
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