Siemens TIASTAR SFIM-70020, Руководство пользователя, Страница: 52 / 118

G10 Siemens Energy & Automation, Inc. 1000 McKee Street Batavia, Illinois 60510
SFIM-7002A-0901
Section G, September, 2001
Fuse Selection 3 Phase 60Hz Squirr
el Cag
e Mot
ors
Fuse siz
es ar
e selected in accor
dance with NEC 1
996 ar
ticle 430-52 & 57 and t
able 430-1
52
assuming motor
s with loc
ked r
otor
KV
A Code B thr
u E.
Lo
w
er
fuse r
ating ma
y be r
eq
uir
ed on
motor
s with Code
A f
or
Time Dela
y fuses and no code or
Code
A and auto tr
ansf
ormer
st
ar
ter
s
application f
or
Non-T
ime Dela
y fuses.
See NEC t
able 430-1
52.
Max.
cur
rent r
ating of fuses is:
a.
150% of max.
heater
FL
A f
or
Class R,
K,
or
L
(time dela
y).
b.
250% of max.
heater
FL
A f
or
Class R,
K or
L
(non-time dela
y).
c.
30
0% of max.
heater
FL
A f
or
Class J (non-time dela
y).
150% f
or
Buss J dimension F
use (time dela
y).
HP
0.9
1.25
3
1.
3
1.6
3
1.
7
2
3
0
2.4
3
4
2.7
4
5
3.9
6
8
6.
1
9
12
1
9.0
15
15
11
.0
17.5
20
17.0
25
30
22
2
35
40
27
40
50
32
45
60
34
1
60
80
52
80
10
0
62
90
12
5
47
7
12
5
15
0
99
15
0
20
0
12
5
175
250
5
144
225
250
19
2
30
0
350
242
350
450
6
289
40
0
50
0
336
50
0
60
0
382
60
0
70
0
Starter
Size
FLA
½ ¾
1
1½
2 3 5
7½
10 15
20 25 30 40 50 60 75
10
0
12
5
15
0
20
0
250 30
0
350 40
0
1.
1
1.4
3
1.
6
2
3
2.
1
2.5
4
03
4
6
3.4
5
6
4.8
7
8
7.
6
10
15
1
11
.0
17.5
20
14
20
25
21
30
40
22
7
40
50
34
50
60
40
60
80
35
2
75
10
0
65
10
0
125
77
11
0
15
0
49
6
15
0
17
5
12
4
175
225
15
6
225
30
0
5
180
250
350
240
350
450
302
450
60
0
6
361
50
0
70
0
41
4
60
0
80
0
47
7
80
0
90
0
Starter
Size
FLA
23
4
3.2
4
6
0
4.2
5.6
8
68
12
6.8
10
12
9.6
15
15
1
15.2
25
30
22
30
40
2
28
40
50
42
60
80
54
80
10
0
36
8
10
0
12
5
80
12
5
150
4
10
4
150
20
0
13
0
20
0
250
15
4
225
30
0
5
192
30
0
350
248
350
450
31
2
450
60
0
6
360
50
0
70
0
480
80
0
90
0
FLA
230V 60Hz
Non
Delay
2.5
4
5
3.7
5.6
6
0
4.8
7
8
6.9
10
12
7.
8
12
15
11
.0
17.5
20
1
17.5
25
35
25.3
40
50
2
32.2
50
60
48.3
70
90
3
62.
1
90
11
0
78.2
11
0
15
0
4
92
12
5
175
12
0
175
225
15
0
225
30
0
5
17
7
250
350
221
350
40
0
285
450
50
0
6
359
50
0
70
0
41
4
60
0
80
0
Starter
Size
FLA
Time
Delay
HP
½ ¾
1
1½
2 3 5
7½
10 15
20 25 30 40 50 60 75
10
0
12
5
15
0
20
0
250 30
0
350 40
0
Time
Delay
Non
Delay
Time
Delay
Starter
Size
Non
Delay
Time
Delay
Non
Delay
If the calculated r
ating is bet
w
een st
andar
d siz
es,
the ne
xt lar
ger
siz
e ma
y be used.
Fuse siz
e ma
y not e
xceed s
witc
h siz
e.
Time-Dela
y–(Class K) or
cur
rent limiting
Time Dela
y (Class RK,
J,
L).
Non–Dela
y–One
Time–(Class K),
or
Cur
rent Limiting RK,
J,
L.
Minimum s
witc
h siz
e per
NEC 430-1
10
must be 1
15% of FL
A of motor
.
Do not use this c
har
t f
or
par
t winding motor
s.
Siz
e as f
ollo
ws:
maximum fuse siz
e limited to 1
50% FL
A f
or
dual element fuses and 20
0% f
or
non dela
y t
ype fuses.
20
0V 60Hz
Non
Delay
2.40
4
4
3.5
4.5
6
0
4.6
6
8
6.6
9
12
7.
5
10
15
10.6
15
20
1
16.7
25
30
24.2
35
45
2
30.8
45
60
46.2
70
90
3
59.4
90
11
0
74.8
11
0
150
4
88
15
0
175
11
4
175
225
14
3
225
250
5
169
250
30
0
21
1
350
40
0
273
40
0
50
0
6
343
50
0
60
0
396
60
0
80
0
Starter
Size
FLA
Time
Delay
208V 60Hz
Non
Delay
.81
1
1
1.21
1.8
3
2.0
0
3
4
0
2.5
3.5
5
3.5
5
6
57
10
7.
5
10
15
1
11
15
20
14
20
25
21
30
40
22
8
40
50
35
50
70
40
60
80
35
5
80
11
0
64
90
12
5
80
11
0
150
41
00
15
0
20
0
13
5
20
0
250
16
5
225
30
0
5
200
30
0
400
260
350
50
0
325
450
60
0
6
385
60
0
70
0
450
60
0
90
0
50
0
700
1000
Starter
Size
FLA
Time
Delay
Non
Delay
1.
3
1.8
3
1.8
2.5
4
2.3
3.2
5
0
3.3
4.5
7
4.3
6.25
8
6.
1
9
12
9.7
15
20
1
14
20
30
18
25
35
27
40
50
23
4
50
70
44
60
90
51
75
10
0
36
6
10
0
12
5
83
12
5
175
4
10
3
150
20
0
12
8
175
250
16
5
225
350
5
208
30
0
40
0
240
350
50
0
320
450
60
0
403
60
0
80
0
6
532
70
0
10
00
620
90
0
120
0
709
10
00
14
00
Starter
Size
FLA
Time
Delay
380V 50Hz
415V 50Hz
460V 60Hz
575V 60Hz