The concentric cables are used as electric service entrance from the power distribution network until the meter panel (especially where it is required to prevent "black" losses or electric power robbery), and as feeder cable from the meters panel until the panel or general distribution panel, just as it is specified in the National Electrical Code. This type of conductor can be used in dry and wet places, directly buried or outdoors; its maximum temperature of operation is 90ºC and its voltage of service for all the applications is 600V.
Aluminum Core Single Phase Concentric cable formed by one phase core of insulated aluminum conductor, and one neutral core of concentric conductor. The concentric aluminum wires are arranged in a helical shape around the phase core and covered by thermoplastic sheath.
ASTM Standard Circular Type Concentric Cables
|
No. |
Item |
Unit |
Technical Data |
|
1 |
Voltage |
kV |
0.6/1 |
|
2 |
Size |
mm² |
2x6 |
|
3 |
Phase Conductor |
||
|
Material |
Hard drawn aluminum wire |
||
|
No.&Diameter of Wires |
No./mm |
7/1.05 |
|
|
Diameter of Conductor (approx.) |
mm |
3.15 |
|
|
Max. DC Resistance at 20°C |
Ω/km |
4.61 |
|
|
4 |
Insulation |
||
|
Material |
XLPE( Natural color) |
||
|
Nominal Thickness |
mm |
0.7 |
|
|
Diameter of Insulation(approx.) |
mm |
4.55 |
|
|
5 |
Neutral Conductor |
||
|
Material |
Aluminum alloy 8000 series |
||
|
No.&Diameter of Wires |
No./mm |
19/0.65 |
|
|
Outer Diameter(approx.) |
mm |
5.85 |
|
|
6 |
Binder Tape |
||
|
Material |
Polyester tape |
||
|
Nominal Thickness |
mm |
0.05 |
|
|
Outer Diameter(approx.) |
mm |
6.0 |
|
|
7 |
Outer Sheath |
||
|
Material |
PVC ST2(Black color) |
||
|
Nominal Thickness |
mm |
1.4 |
|
|
8 |
Overall Diameter(approx.) |
mm |
8.8 |
|
9 |
Weight(approx.) |
kg/km |
94 |
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