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Siemens SENTRON 3VL - Dimensioning Short-Circuit Protection According to Frame Size

Siemens SENTRON 3VL
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Functions
5.1 Current protection
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
47
Setting options
L
Overload
protection
S
1)
Short-circuit protection
(short time delay)
I
1)
Short-circuit
protection
(instantaneous)
G
Ground fault protection
Order No.
supplement
Trip unit
I
r
= x I
n
I
sd
= x I
r
t
sd
[s] I
i
= x I
n
I
g
= I
n
t
g
[s]
SG
MG
SH
MH
TH
NH
ETU22
ETU22
ETU22
ETU22
ETU22
ETU22
0,4 ... 1
0,4 ... 1
0,4 ... 1
0,4 ... 1
0,4 ... 1
0,4 ... 1
1,5 ... 10
1,5 ... 10
1,5 ... 10
1,5 ... 10
1,5 ... 10
1,5 ... 10
0 ... 0,5
0 ... 0,5
0 ... 0,5
0 ... 0,5
0 ... 0,5
0 ... 0,5
11
11
11
11
11
11
0.6 ... 1 OFF
0.6 ... 1 OFF
0.6 ... 1 OFF
0.6 ... 1 OFF
0.6 ... 1 OFF
0.6 ... 1 OFF
0.1/0.3/Off
0.1/0.3/Off
0.1/0.3/Off
0.1/0.3/Off
0.1/0.3/Off
0.1/0.3/Off
SS
MS
ETU30M
3)
ETU30M
3)
0,4 ... 1
0,4 ... 1
-
-
-
-
6/8/11
6/8/11
-
-
-
-
CP
CH
CJ
LCD-ETU40M
3)
LCD-ETU40
LCD-ETU40
0,4 ... 1
0,4 ... 1
0,4 ... 1
-
1,5 ... 10
1,5 ... 10
-
0 ... 0,5
0 ... 0,5
1,25 ... 11
1,25 ... 11
1,25 ... 11
-
-
-
-
-
-
CL
CM
CN
LCD-ETU42
LCD-ETU42
LCD-ETU42
0,4 ... 1
0,4 ... 1
0,4 ... 1
1,5 ... 10
1,5 ... 10
1,5 ... 10
0 ... 0,5
0 ... 0,5
0 ... 0,5
1,25 ... 11
1,25 ... 11
1,25 ... 11
0,4 ... 1
0,4 ... 1
0,4 ... 1
0,1 ... 0,5
0,1 ... 0,5
0,1 ... 0,5
1)
Dependent on frame size, refer to chapter "Dimensioning short-circuit protection according
to frame size (Page 47)"
2)
TM to I
n
= 630 A
3)
Motor protection to I
n
= 500 A
5.1.4 Dimensioning short-circuit protection according to frame size
Short-circuit protection (instantaneous) I
i
= x I
n
)
63 A 100 A 160 A 200 A 250 A 315 A 400 A 630 A 800 A 1000 A 1250 A 1600 A
11 11 11 11 11 11 11 10 8 11 11 9
Short-circuit protection (instantaneous) I
SD
= x I
r
)
63 A 100 A 160 A 200 A 250 A 315 A 400 A 630 A 800 A 1000 A 1250 A 1600 A
1,5 ... 1
0
1,5 ... 1
0
1,5 ... 1
0
1,5 ... 1
0
1,5 ... 1
0
1,5 ... 1
0
1,5 ... 1
0
1,5 ... 9 1,5 ... 7 1,5 ... 1
0
1,5 ... 1
0
1,5 ... 8

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