Main Circuit Wires - YASKAWA Sigma-V Series User Manual

4 Wiring and Connection

4.4.4 Main Circuit Wires

4.4.4

Main Circuit Wires

Use the following wires for the main circuits of the multi-winding drive unit,
SERVOPACKs, and the converters.
(1) Wire Types
Use the following type of wire for main circuit.
Symbol
IV
HIV
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.
Nominal
Cross
Section
Diameter
(mm
4-16
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
600 V polyvinyl chloride insulated wire
600 V grade heat-resistant polyvinyl chloride
insulated wire
Configuration
AWG
(Number of
Size
2
)
0.5 (20)
0.75 (19)
0.9 (18)
1.25 (16)
2 (14)
3.5 (12)
5.5 (10)
8 (8)
14 (6)
22 (4)
38 (1)
Name
Conductive
Resistance
Wires/mm) (Ω/km)
19/0.18 39.5
30/0.18 26
37/0.18 24.4
50/0.18 15.6
7/0.6 9.53
7/0.8 5.41
7/1.0 3.47
7/1.2 2.41
7/1.6 1.35
7/2.0 0.85
7/2.6 0.49
Allowable Conductor
Temperature (°C)
60
75
Allowable Current at
Surrounding Air Temperature
(A)
30°C 40°C
6.6 5.6
8.8 7
9 7.7
12 11
23 20
33 29
43 38
55 49
79 70
91 81
124 110
50°C
4.5
5.5
6
8.5
16
24
31
40
57
66
93