6-35kV extruded insulated aluminum alloy power cable

The 6-35kV extruded insulated aluminum alloy power cable produced by Shandong Yanggu Cable Group is often used in urban underground power grids, power station lines, internal power supply of industrial and mining enterprises and underwater transmission lines across rivers and seawaters. The laying method can be buried, in the air, in the bridge, etc. Realize the replacement of copper with aluminum.

First, the product implementation standards

1. GB/T31840.2-2015 Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) aluminum alloy core extruded insulated power cable Part 2: Rated voltage 6kV (Um=7.2kV) to 30kV (Um=36kV) cable

2. GB/T 31840.3-2008 Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) aluminum alloy core extruded insulated power cable Part 3: Rated voltage 35kV (Um=40.5kV) cable

3. GB/T 19666-2005 General rules for flame retardant and fire-resistant cables (only applicable to flame-retardant and fire-resistant cables)

Second, product characteristics

1. Conditions of use

Cable laying temperature: ≥0°C;

Long-term maximum allowable operating temperature of cable conductors: PVC insulation: 70°C, XLPE insulation: 90°C;

The maximum working temperature of the cable during short circuit (up to 5s): XLPE insulation 250°C; PVC insulation, cross-sectional area ≤ 300mm², 160°C, cross-sectional area greater than 300mm², 140°C;

The minimum permissible bending radius of the cable: 20D for single core unarmoured, 15D for single core armoured, 15D for three cores unarmoured, and 12D for three cores. Note: D is the actual outer diameter of the cable.

2. Structural requirements

The basic structure of 6-35kV aluminum alloy core extruded insulated power cable is composed of three parts: conductor, insulation layer and protective layer.

1) Conductors

The conductor is made of stranded aluminum alloy wire, which meets the requirements of GB/T 3956-2008 standard. A conductor is the conductive part of a power cable that is used to transport electrical energy.

2) Insulation

The insulation is extruded in PVC or XLPE. The cores are electrically isolated from the ground and the cores of different phases to ensure the transmission of electrical energy.

3) Outer sheath

The outer sheath is PE or PVC, and flame retardant, termite-proof, low-smoke and low-halogen flame retardant, low-smoke halogen-free flame retardant and other materials can also be provided according to customer requirements. The function is to protect the power cable from the invasion of external impurities and moisture, as well as to prevent external forces from directly damaging the power cable.

3. Model description of 1kV extruded insulated power cable

Product Code (omitted)

Feature code WDZ - low smoke halogen-free flame retardant; ZA (ZB, ZC) - flame retardant (A, B, C) grade; NH - Fire Resistant;

Conductor material code

Aluminum alloy conductor - LH

The code of the insulating material

YJ-cross-linked polyethylene insulation; V-PVC insulation; E-ethylene propylene rubber insulation; EY-hard ethylene propylene rubber insulation

Sheath material code V-PVC sheath; Y-polyethylene or polyolefin sheath; F-Elastomer Sheath;

Code name for the armor material

2 - double steel belt armor; 3-thin round steel wire armor; 4-thick round steel wire armor; 6- (double) non-magnetic metal strip armor; 7- Non-magnetic wire armor S-Aluminum alloy with interlocking armor

The code of the outer sheath material

2-polyvinyl chloride sheath; 3-Polyethylene or polyolefin sheath; 4- Elastomer sheath

Common models