Cross Sections Of The Power Cables - HEIDENHAIN TNC 410 M Technical Manual

4.2.10 Cross Sections of the Power Cables

Cable cross
section
2
1.0 mm
2
1.5 mm
2
2.5 mm
2
4.0 mm
2
6.0 mm
2
10.0 mm
2
16.0 mm
2
25.0 mm
2
35.0 mm
2
50.0 mm
2
70.0 mm
4 – 10
DIN/EN 60 204-1 is valid for the dimensions of leads and cables.
A permissible current load value I
This permissible current load value must be corrected with two factors:
Correction factor C
• C = 0.91 for +45 °C
1
• C = 0.82 for +50 °C
1
• C = 0.71 for +55 °C
1
Correction factor C
temperature of +90 °C
The following tables are valid for
An ambient temperature of +40 °C
An operating temperature of +90 °C (only H07 V2-K and Lapp Ölflex-Servo-
FD 795 P single conductors)
Installation type B1
Conductor in the installation armor and installation channels to be opened.
Installation type B2
Cables and leads in the installation armor and installation channels to be
opened.
Installation types C and E
Cables and leads on walls and on open cable racks.
Permissible current load with installation type B1 Permissible current
Single conductor
Standard PVC
10.4 A
13.5 A
18.3 A
25.0 A
32.0 A
44.0 A
60.0 A
77.0 A
97.0 A
–
–
HEIDENHAIN Technical Manual for Inverter Systems and Motors
is assigned to each cable cross section.
Z
for increased ambient air temperature
1
= 1.13 for insulation material at an increased operating
2
Single conductor
H07 V2-K
11.7 A
15.2 A
20.6 A
28.2 A
36.1 A
49.7 A
67.8 A
87.0 A
109.6 A
–
–
load with installation
type B2
Cable
Lapp Ölflex-Servo-FD
795 P
10.8 A
13.8 A
18.6 A
26.0 A
32.8 A
45.2 A
59.9 A
75.7 A
93.8 A
111.2
140.1