Siemens SIMOTICS S-1FT7 - Page 371

Electrical connection
8.3 System integration
S-1FT7 synchronous motors
Configuration Manual, 09/2018, A5E45099423B AA
369
Current-carrying capacity for power and signal cables
The current-carrying capacity of PVC/PUR-insulated copper cables is specified for routing
types B1, B2 and C under continuous operating conditions in the table with reference to an
ambient air temperature of 40° C. For other ambient temperatures, the values must be
corrected by the factors from the "Derating factors" table.
Table 8- 1 Cable cross-section and current-carrying capacity
Cross-section
Current-carrying capacity, AC rms 50/60 Hz or DC for routing type
mm
2
B1 / A
B 2 / A
C / A
E / A
Electronics (according to EN 60204-1)
0.20
-
4.3
4.4
4.4
0.50 - 7.5 7.5 7.8
0.75
-
9
9.5
10
Power (according to EN 60204-1)
0.75
8.6
8.5
9.8
10.4
1.00
10.3
10.1
11.7
12.4
1.50
13.5
13.1
15.2
16.1
2.50
18.3
17.4
21
22
4
24
23
28
30
6
31
30
36
37
10
44
40
50
52
16
59
54
66
70
25
77
70
84
88
35
96
86
104
110
50
117
103
125
133
70
149
130
160
171
95
180
165
194
207
120
208
179
225
240
Power (according to IEC 60364-5-52)
150
239
1)
206
1)
259
1)
276
1)
185 274
1)
235
1)
296
1)
315
1)
> 185
Consult the standard for the values.
1)
Extrapolated values
Table 8- 2 Derating factors for power and signal cables
Ambient air temperature [°C]
Derating factor according to EN 60204-1, Table D1
30
1.15
35
1.08
40
1.00
45
0.91
50
0.82
55
0.71