4 main circuit wires, 1) wire types – Yaskawa Sigma-5 Series User Manual:: For Use with Large-Capacity Models-Setup. Rotary Motors User Manual
Page 69
3.4 Main Circuit Wiring
3-21
Wiring and Connection
3.4.4 Main Circuit Wires
This section describes details about the main circuit wire for the SERVOPACK and
the converter.
(1) Wire Types
Use the following type of wire for main circuit.
The following table shows the wire sizes and allowable currents for three wires.
Use wires with specifications equal to or less than those shown in the table.
1. Wire sizes are selected for three cables per bundle at 40
°C sur-
rounding air temperature with the rated current.
2. Use a wire with a minimum withstand voltage of 600 V for the
main circuit.
3. If cables are bundled in PVC or metal ducts, take into account the
reduction of the allowable current.
4. Use a heat-resistant wire under high surrounding air or panel
temperatures, where polyvinyl chloride insulated wires will rapidly
deteriorate.
Cable Type
Allowable Conductor
Temperature (
°C)
Symbol
Name
IV
600 V polyvinyl chloride insulated wire
60
HIV
600 V grade heat-resistant polyvinyl chloride
insulated wire
75
Nominal
Cross
Section
Diameter
(mm
2
)
AWG
Size
Configuration
(Number of
Wires/mm)
Conductive
Resistance
(
Ω/km)
Allowable Current at
Surrounding Air Temperature
(A)
30
°C
40
°C
50
°C
0.5
(20)
19/0.18
39.5
6.6
5.6
4.5
0.75
(19)
30/0.18
26
8.8
7
5.5
0.9
(18)
37/0.18
24.4
9
7.7
6
1.25
(16)
50/0.18
15.6
12
11
8.5
2
(14)
7/0.6
9.53
23
20
16
3.5
(12)
7/0.8
5.41
33
29
24
5.5
(10)
7/1.0
3.47
43
38
31
8
(8)
7/1.2
2.41
55
49
40
14
(6)
7/1.6
1.35
79
70
57
22
(4)
7/2.0
0.85
91
81
66
38
(1)
7/2.6
0.49
124
110
93