Servopack Main Circuit Wire Size; Cable Types - YASKAWA SGDH User Manual

5.3 SERVOPACK Main Circuit Wire Size

1. Wire sizes were selected for three cables per bundle at 40 °C (104 °F) ambient temperature with the rated
IMPORTANT
current.
2. Use cable with a minimum withstand voltage of 600 V for main circuits.
3. If cables are bundled in PVC or metal ducts, consider the reduction ratio of the allowable current.
4. Use heat-resistant cables under high ambient or panel temperatures where normal vinyl cables will rap-
idly deteriorate.
5. Use cables within the allowable moment of inertia.
6. Do not use cables under continuous regenerative state.

5.3.1 Cable Types

Cable Types
Symbol
PVC Normal vinyl cable
IV 600-V vinyl cable
Temperature-resistant
HIV
vinyl cable
The following table shows the wire size and allowable current for three cables. Use a cable whose specifications
meet or are less than the values in the table.
• 600-V Heat-resistant Vinyl Cables (HIV)
AWG Size
20 0.5 (0.00078)
- 0.75 (0.00116)
18 0.9 (0.00140)
16 1.25 (0.00193)
14 2.0 (0.00310)
12 3.5 (0.00543)
10 5.5 (0.00853)
8
6 14.0 (0.0217)
4 22.0 (0.0341)
Note: The values in the table are only for reference.
Allowable
Conductor
Temperature
Name
°C (°F)
−
60 (140)
75 (167)
Nominal
Configuration
Cross
Number of
Section
2
wires/mm
Diameter
2
(in )
2 2
mm (in )
19/0.18
(0.00028)
30/0.18
(0.00028)
37/0.18
(0.00028)
50/0.18
(0.00028)
7/0.6 (0.00093)
7/0.8 (0.00124)
7/1.0 (0.00155)
8.0 (0.0124) 7/1.2 (0.00186)
7/1.6 (0.00248)
7/2.0 (0.00310)
Allowable Current at Ambient Temperature
Conductive
Resistance
Ω/km °
30°C (86 F)
39.5 6.6
26.0 8.8
24.4 9.0
15.6 12.0
9.53 23
5.41 33
3.47 43
2.41 55
1.35 79
0.85 91
5-45
5.3 SERVOPACK Main Circuit Wire Size
A
40°C 50°C
° °
(104 F) (122 F)
5.6 4.5
7.0 5.5
7.7 6.0
11.0 8.5
20 16
29 24
38 31
49 40
70 57
81 66
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