Polyethylene Service Drop Cable , Aerial Drop Cable For Overhead Distribution Lines
Description
3 Phase conductors + 1 Messenger conductor + 1 Street lighting conductor
The aerial Bundled cables designed for overhead distribution lines have an insulated neutral messenger made of AAAC, which the insulated aluminium phase conductor are helically wound over it. Cables are rated at 0.6/1(1.2)kV and conform to IEC60502.
Construction
- Conductor:
a)Phase - The phase conductor shall be of H68 Condition aluminium conductor and compacted circular stranded.
b)Neutral or messenger - The Neutral or messenger conductor shall be of aluminium alloy conductor and compacted circular stranded c)Street Lighting- The street lighting conductors shall be of H68 condition aluminium conductor and compacted circular stranded..
- Insulation:
The phase, neutral conductors shall be extruded with polyethylene(PE) as insulation.
Schedule of technical particulars
| Phase conductor | |||||||||
| Nominal cross-sectional area | mm² | 25 | 35 | 50 | 70 | 95 | 120 | 150 | 185 |
| Number of cores | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| Minimum number of wires | 6 | 6 | 6 | 12 | 15 | 15 | 30 | 30 | |
| Nominal insulation thickness | mm | 1.2 | 1.2 | 1.4 | 1.4 | 1.6 | 1.6 | 1.8 | 2.0 |
| Diameter of insulated core | mm | 8.5 | 9.5 | 11.2 | 13.0 | 15.1 | 16.6 | 18.4 | 20.6 |
| Max. DC resistance at 20℃ | ohm/km | 1.20 | 0.868 | 0.641 | 0.443 | 0.320 | 0.253 | 0.206 | 0.164 |
| Current rating at still wind, ambient | A | 84 | 104 | 129 | 167 | 209 | 246 | 283 | 332 |
| temperature=30℃ | |||||||||
| Conductor temperature=75℃ | |||||||||
| Messenger conductor | |||||||||
| Nominal cross-sectional area | mm² | 25 | 25 | 35 | 50 | 70 | 70 | 95 | 120 |
| Minimum number of wires | 6 | 6 | 6 | 6 | 12 | 12 | 15 | 15 | |
| Nominal insulation thickness | mm | 1.2 | 1.2 | 1.2 | 1.4 | 1.4 | 1.4 | 1.6 | 1.6 |
| Diameter of insulated core | mm | 8.5 | 8.5 | 9.5 | 11.2 | 13.1 | 13.1 | 15.1 | 16.6 |
| Max. DC resistance at 20℃ | ohm/km | 1.312 | 1.312 | 0.943 | 0.693 | 0.469 | 0.469 | 0.349 | 0.273 |
| Calculated breaking load | kN | 6.4 | 6.4 | 8.9 | 12.1 | 18.0 | 18.0 | 24.2 | 30.8 |
| Street lighting conductor | |||||||||
| Nominal cross-sectional area | mm² | 25 | 25 | 35 | 50 | 70 | 70 | 95 | 120 |
| Minimum number of wires | 6 | 6 | 6 | 6 | 12 | 12 | 15 | 15 | |
| Nominal insulation thickness | mm | 1.2 | 1.2 | 1.2 | 1.4 | 1.4 | 1.4 | 1.6 | 1.6 |
| Diameter of insulated core | mm | 8.5 | 8.5 | 9.5 | 11.2 | 13.1 | 13.1 | 15.1 | 16.6 |
| Max. DC resistance at 20℃ | ohm/km | 1.312 | 1.312 | 0.943 | 0.693 | 0.469 | 0.469 | 0.349 | 0.273 |
| Completed cable | |||||||||
| Approx. overall diameter | mm | 23.2 | 25.6 | 30.0 | 34.9 | 40.6 | 44.1 | 49.2 | 54.9 |
| Approx. weight of cable | kg/km | 470 | 560 | 740 | 980 | 1330 | 1580 | 1940 | 2410 |
| Packing length | m/drum | 1000 | 1000 | 1000 | 1000 | 500 | 500 | 500 | 500 |
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