Siemens SENTRON 3VL System Manual page 124
Switching/protection devices, molded-case circuit breakers
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Also See for SENTRON 3VL:
- System manual (318 pages) ,
- Function manual (146 pages) ,
- Operating instructions manual (12 pages)
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Displays and operator controls
9.1 Overcurrent trip unit without LCD display
Characteristic
Application
curve
ETU10M for line and generator protection,
L
LI function
Finely adjustable overload protection
I
= 0.41; 0.42 to 0.98; 0.99; 1 x I
R
Trip class t
I
Thermal memory
Short-circuit protection (instantaneous)
I
= 1.25 to 11 x I
i
with phase failure sensitivity (40% I
setting)
ETU30M for motor and generator protection,
LI function
Finely adjustable overload protection
I
= 0.41; 0.42 to 0.98; 0.99; 1 x I
R
Trip class t
Thermal memory
Short-circuit protection (instantaneous)
I
= 6 to 11 x I
i
(40% I
124
= 10 (fixed setting)
C
(frame-size-dependent)
n
= 10, 20, 30
C
with phase failure sensitivity
n
fixed setting)
R
View
.4 .4
.4
.4
X3
.9
,
.8 .7
n
fixed
R
.4 .4
.4
.4
X3
.9
,
.8 .7
n
I
I
.10
.01
11
1.25
R
i
.09
.02
.4
10
1.5
+
.08
.5
.03
8
2
.6
.07
.04
6
3
I
I
x
x
.06 .05
5
4
n
n
I
I
I
.10
=11x
.01
TC
30
10
i
R
n
.09
.02
.4
20
20
I
=6x
+
i
.08
.5
.03
10
30
10
.6
.07
.04
Test
I
I
I
x
30
20
.06 .05
=8x
n
i
n
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
Alarm
>1.05
Active
Alarm
>1.05
I
n
Active
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