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AAC AAAC ACSR Self Supporting Aerial Bundled Cable ABC Cable for Overhead Power Line
Section nominal | Nominal insulation thickness | Maximum wiring passage | spark voltage Alternating current | spark voltage DC |
mm2 | mm | mm | KV | KV |
10 | 1.14 | 389 | 10 | 16.5 |
16 | 1.14 | 453 | 10 | 16.5 |
25 | 1.14 | 530 | 12.5 | 21 |
35 | 1.14 | 601 | 15 | 24 |
50 | 1.52 | 742 | 15 | 24 |
70 | 1.52 | 843 | 15 | 24 |
95 | 1.52 | 950 | 15 | 24 |
120 | 2.03 | 1109 | 15 | 24 |
150 | 2.03 | 1210 | 15 | 24 |
185 | 2.03 | 1315 | 15 | 24 |
240 | 2.03 | 1464 | 17.5 | 30 |
1. What are the primary applications of AAC conductors?
AAC cables are ideal for medium-voltage urban/rural distribution
due to their lightweight and corrosion resistance, commonly used in
street lighting and temporary power grids.
2. How does AAAC differ from AAC in performance?
AAAC (Aluminum Alloy Conductor) offers higher tensile strength (30%
improvement) and better thermal stability compared to pure aluminum
AAC, making it suitable for coastal or industrial areas.
3. Why is ACSR preferred for high-voltage transmission?
ACSR's steel core reinforcement provides mechanical strength for
long spans (e.g., river crossings) and reduces sag, critical for
11kV-33kV overhead lines.
4. What makes Self-Supporting Aerial Bundle Cables cost-effective?
These cables eliminate support wires by integrating insulated
conductors in a bundled structure, cutting installation costs by
20-30%.
5. What temperature range can AAC/AAAC conductors withstand?
Standard AAC/AAAC operates at -40°C to 70°C, while XLPE-insulated
variants (e.g., ABC) support -40°C to 90°C.
6. How is ACSR's steel core protected from corrosion?
The steel core is galvanized and often coated with moisture-proof
varnish at connection points to prevent rust.
7. Which cable type is best for rural electrification projects?
Self-Supporting ABC (e.g., 3×70+1×50mm²) is recommended for
three-phase four-wire systems due to its easy installation and low
maintenance.
8. What are the mechanical stress limits for aerial conductors?
Under ice loading, stress must not exceed 60% of short-time
breaking strength, with sag adjustments allowed within 10-15% of
design stress.
9. Can AAC/AAAC be used in heavy industrial zones?
Yes, but AAAC is preferred for its enhanced chemical resistance to
pollutants in industrial areas.
10. What standards govern ACSR conductor connections?
Connecting tubes must align perfectly to avoid unbalanced forces,
followed by anti-corrosion coating application.