1.8-3kV And Below Cross-Linked Polyethylene Insulated Power Cables

Product Name: 1.8/3kV and below cross-linked polyethylene insulated power cables

1-Implementation standards

GB/T2706.1-2020

2-Product Model

YJV, YJLV, YJLHV, YJV22, YJV32, YJY23, YJV62, YJV72, etc.

3- Voltage level

1.8/3kV, 0.6/1kV

4-Product Specifications

Number of cores

Specification

Copper conductor

Aluminum or aluminum alloy conductor

1-5

1.5 mm 2 ～630 mm 2

1.5 mm 2 ～630 mm 2

3+1, 3+2, 4+1

2.5 mm 2 ～630 mm 2

6 mm 2 ～630 mm 2

5- Cable structure description

Cable structure

Material Description

Conductor

Round compacted or non-compacted (copper or aluminum or aluminum alloy) conductors, copper conductors - Class 1, Class 2, Class 5; aluminum conductors - Class 1, Class 2

fire-resistant layer(if any)

Mica tape

Insulation

Cross-linked polyethylene insulation material

Filling (if any)

Non-hygroscopic Polypropylene Reticulated Filler Rope

Cable wrapping tape (if any)

Non-woven or polypropylene tape

Metal shielding (if any)

Copper tape wrapping or copper wire wrapping

Inner Sheath (if any)

Polypropylene embossed tape or (polyvinyl chloride or polyethylene or halogen-free low-smoke flame retardant) sheath material

Isolation sleeve (if any)

PVC or polyethylene or halogen-free low smoke flame retardant sheath material

Armor (if any)

Stainless steel strip or aluminum strip or aluminum alloy strip or galvanized steel strip or stainless steel wire or aluminum wire or aluminum alloy wire or galvanized steel wire

Outer sheath

PVC or polyethylene or halogen-free low smoke flame retardant sheath material

6-Wire core identification

6.1 Insulation coloring or color band identification:

1-core cable: natural insulation color or as per customer's requirements

2-core cable: red, blue; 3-core cable: yellow, green, red;

4-core cable: yellow, green, red, blue;

5-core cable: yellow, green, red, blue, yellow-green double color or black or as per customer’s requirements;

3+1 core cable: yellow, green, red, blue;

3+2 core cable: yellow, green, red, blue, yellow-green double color or black or as per customer’s requirements;

4+1 core cable: yellow, green, red, blue, yellow-green dual-color or black or as per customer's requirements.

Note 1 : Yellow, green and red are used for the main line core, and blue is used for the neutral line core.

6.2 Multi-core cable insulation digital identification:

2-core cable: 0, 1; 3-core cable: 1, 2, 3; 4-core cable: 0, 1, 2, 3;

4-core cable: 0, 1, 2, 3, 4;

Note 2 : The numbers should be white or as per customer requirements, where 1, 2, 3 are for main cores, 0 is for neutral core, and in 5-core cables, number 4 refers to special purpose conductors (including grounding conductors).

7-Sheath color

Black or as per customer's requirement

8-Special performance requirements

Flame retardant A/B/C grade, fire resistant, low smoke and halogen-free, termite-proof, rodent-proof, UV-resistant, oil-resistant, etc.

9- Cable application characteristics

9.1 The maximum long-term rated temperature allowed for the cable conductor during normal operation is 90°C.

9.2 During short circuit (duration not exceeding 5 seconds), the maximum allowable temperature of the cable conductor is 250°C.

9.3 The cable installation temperature should not be lower than 0 ℃

9.4 Minimum bending radius for cable installation

9.4.1 Single-core unarmored cable:

The minimum cable bend radius during installation should be no less than 20 times the cable's outer diameter.

The minimum cable bend radius after installation should be no less than 15 times the cable's outer diameter.

9.4.2 Single-core armored cable:

The minimum bending radius of the cable during installation : not less than 15 times the outer diameter of the cable;

The minimum bending radius of the cable after installation : not less than 12 times the outer diameter of the cable.

9.4.3 Multi-core unarmored cables:

The minimum bending radius of the cable during installation : not less than 15 times the outer diameter of the cable;

The minimum bending radius of the cable after installation : not less than 12 times the outer diameter of the cable.

9.4.4 Multi-core armored cables:

The minimum bending radius of the cable during installation: not less than 12 times the outer diameter of the cable;

The minimum bending radius of the cable after installation: not less than 10 times the outer diameter of the cable.

9.5 cable is widely used in 0.6/1kV and 1.8/3kV power distribution systems. The cable is suitable for fixed installation both indoors and outdoors or directly buried in pipelines, cable trays, conduits, and cable trenches. Metal-tape armored cable can withstand mechanical forces but not significant tension. Metal-wire armored cable can withstand mechanical forces and considerable tension. Unarmored cable cannot withstand tension or compression.