Siemens siprotec 7SJ63, Инструкция по эксплуатации

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Technical Data
10-30
7SJ63 Manual
C53000-G1140-C120-1
Figure 10-6 Trip Time Characteristic Curves For The Thermal Overload Protection (49)
Willi Anwender
1
0.3
0.1
1 2 3 5 10 12
100
20
10
5
2
0.5
0.2
0.05
t [min] t [min]
I
/k
·
I
N
1000
1
0.3
0.1
100
20
10
5
2
0.5
0.2
0.05
[min]
3
30 30
3
Parameter:
Setting Value
of Time Con-
stant
20
200
500
100
50
10
5
2
1
4 6 7 8
50
t
τ
I
k I
N
⋅
--------------
 
 
2
I
k
I
N
⋅
--------------
 
 
2
1
–
--------------------------------
ln
⋅
=
without pre-load:
I /k
·
I
N
1 2 3 5 10 12 4 6 7 8
with 90 % pre-load:
t
τ
I
k I
N
⋅
--------------
 
 
2
I
pre
k I
N
⋅
--------------
 
 
 
2
–
I
k I
N
⋅
--------------
 
 
2
1 –
---------------------------------------------------
ln
⋅
=
50
Parameter:
Setting Value
of Time Con-
stant
1000
500
200
100
50
20
10
5
2 1
τ
[min]
τ
[min]
[min]
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