Catalog Add On: BETA Low-Voltage Circuit Protection ...
Catalog Add On: BETA Low-Voltage Circuit Protection ...
Catalog Add On: BETA Low-Voltage Circuit Protection ...
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Series 3NE6 4.., 3NE9 4..<br />
Operational class: aR, gR<br />
Rated voltage: 600 V AC (1250 A),<br />
800 V AC (710 A, 1250 A),<br />
900 V AC (710 A)<br />
Rated current: 710 ... 1250 A<br />
Let-through characteristics (current limitation at 50 Hz)<br />
[A]<br />
c<br />
Let-through current<br />
10 5<br />
6<br />
4<br />
2<br />
4 10<br />
6<br />
4<br />
2<br />
103 103 Unlimited peak values:<br />
DC component 50 %<br />
DC component 0 %<br />
& # ' # )<br />
% )<br />
10<br />
p [A]<br />
5 10 2 4<br />
4 2 4 6 8 2 4 6 8<br />
Prospective short-circuit current<br />
Correction factor k A for breaking I 2 t value Peak arc voltage<br />
A<br />
Correction factor<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
& )<br />
# )<br />
% )<br />
' )<br />
0 200 400 600<br />
Recovery voltage<br />
I2_11439<br />
800 1000<br />
w [V]<br />
© Siemens AG 2007<br />
I2_11438<br />
8 <br />
Ûs<br />
Peak arc voltage<br />
2000<br />
1800<br />
1600<br />
1400<br />
1200<br />
1000<br />
800<br />
600<br />
400<br />
200<br />
<strong>BETA</strong> Protecting<br />
SITOR Semiconductor Fuses<br />
& # )<br />
# )<br />
% )<br />
' )<br />
0<br />
0 200 400 600 800 1000 1200<br />
Recovery voltage w 8 <br />
SITOR, LV HRC design<br />
Siemens ET B1 AO · 2008, Characteristic curves<br />
I2_11440<br />
4/37<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17
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