What is the Purpose of Overhead Cables?

The overhead insulated cable series products are composed of pressed copper, aluminum (aluminum alloy) conductors, inner shielding layer, weather-resistant insulating material and outer shielding layer. They not only have the power transmission characteristics of power cables, but also have strong mechanical properties of overhead cables. Compared with bare wires, this product has the advantages of small laying spacing, high safety and reliability, and excellent resistance to atmospheric aging. As a China Cable Supplier, share with you.

Armoured XLPE Power Cable

Overhead insulated cable use

Overhead insulated cable products are a new series of products for the transmission of electric energy over overhead transmission lines, and are preferred for power grid construction and transformation of 10kV transmission lines. It is the most suitable series product for line maintenance and safety. Soft copper core products are suitable for the lower leads of transformers.

Overhead cable executive standard:

1. 1KV overhead insulated cable: GB12527-90 is equivalent to the International Electrotechnical Commission IEC60502, IEC227;

2. 10KV overhead insulated cable: GB14049-93 is equivalent to the International Electrotechnical Commission IEC60502.

Overhead insulated cable

Characteristics of overhead insulated cables:

1. Rated voltage: 0.6/1KV, 10KV;

2. The long-term allowable working temperature of the cable: 70℃ for PVC insulation and 90℃ for XLPE insulation.

3. When short-circuited (the longest time is no more than 5 seconds), the maximum temperature of the cable: 160°C for PVC insulation, 150°C for high-density polyethylene insulation, and 250°C for cross-linked polyethylene insulation;

4. The ambient temperature during cable laying is not lower than -20℃;

5. Allowable bending radius of cable:

(1) Cables with rated voltage below 1KV: cables with an outer diameter (D) of less than 25mm should not be less than 4D, and cables with an outer diameter (D) of 25mm and above should not be less than 6D;

(2) The rated voltage of 10KV cable should not be less than 20 (D+d). Where: D—the actual outer diameter of the cable, d—the actual outer diameter of the cable conductor.

Our company also has Armoured XLPE Power Cable on sale, welcome to contact us.

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