YASKAWA FSP Series, Краткое руководство по установке, Страница: 25 / 58

FSP Amplifier Short Form Installation Guide Wiring
25
5.3. Main Circuit Wire Size
Cable Types
Cable Types
Symbol Name
Allowable Conductor
Temperature ºC (ºF)
PVC Normal vinyl cable —
IV 600V vinyl cable 60 (140)
HIV Temperature-resistant vinyl cable 75 (167)
•
Wire sizes are selected for three cables per bundle at 40°C (104°F) ambient
temperature with the rated current.
•
Use cable with a minimum withstand voltage of 600V for main circuits.
•
If cables are bundled in PVC or metal ducts, consider the reduction ratio of the
allowable current.
•
Use heat-resistant cables under high ambient or panel temperatures where
normal vinyl cables will rapidly deteriorate.
•
Use cables within the allowable moment of inertia.
•
Do not use cables under continuous regenerative state.
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)
Allowable Current at Ambient
Temperature
AWG
Size
Nominal
Cross
Section
Diameter
mm
2
(in
2
)
Configuration
Number of
wires/mm
2
(in
2
)
Conductive
Resistance
Ω /km
30°C
(86°F)
40°C
(104°F)
50°C
(122°F)
20 0.5 (0.00078) 19/0.18 (0.00028)
39.5 6.6 5.6 4.5
—
0.75 (0.00116) 30/0.18 (0.00028)
26.0 8.8 7.0 5.5
18 0.9 (0.00140) 37/0.18 (0.00028)
24.4 9.0 7.7 6.0
16 1.25 (0.00193) 50/0.18 (0.00028)
15.6 12.0
11.0 8.5
14 2.0 (0.00310) 7/0.6 (0.00093)
9.53 23 20 16
12 3.5 (0.00543) 7/0.8 (0.00124)
5.41 33 29 24
10 5.5 (0.00853) 7/1.0 (0.00155)
3.47 43 38 31
8 8.0 (0.01240) 7/1.2 (0.00186)
2.41 55 49 40
6 14.0 (0.02170) 7/1.6 (0.00248)
1.35 79 70 57
4 22.0 (0.03410) 7/2.0 (0.00310)
0.85 91 81 66
Note: The values in the table are for reference only.