15
Main Circuit Wiring
SERVOPACK Main Circuit Wire Size and Tightning Torque
Symbol Name
Cable Types
Allowable
Conductor
Temperature
PVC
IV
HIV
Normal vinyl cable
600-V vinyl cable
Temperature-resistant vinyl cable
–
60˚C
75˚C
AWG Size
Nominal Cross
Section Diameter
mm
2
Conductive
Resistance
Ω /mm
Allowable Current at
Ambient Temperature A
Configuration
Number of
wires/mm
2
20
—
18
16
14
0.5
0.75
0.9
1.25
2.0
19/0.18
30/0.18
37/0.18
50/0.18
7/0.6
39.5
26.0
24.4
15.6
9.53
6.6
8.8
9.0
12.0
23
5.6
7.0
7.7
11.0
20
30˚C40˚C50˚C
4.5
5.5
6.0
8.5
16
Connection Diagram
Cable Types
600-V Heat-resistant Vinyl Cables (HIV)
Note
:
The values in the table are only for reference.
•
SJDE SERVOPACKs are suitable where the power supply is less than 5000 Arms (230 V rms max.).
•
SERVOPACKs must be used with UL-listed fuses or circuit breakers, in accordance with the National
Electrical Code (NEC).
•
Use 75 ˚C heat-resistant copper wires or an equivalent.
•
Wire sizes are selected for three cables per bundle at 40 ˚C ambient temperature with the rated
current.
•
Use cables with a minimum withstand voltage of 600 V 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.
•
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.
To Next Page
Loading...
Need help?
General
