Electrical Underground Cables / XLPE Insulated Cable With Copper Conductor 66KV

Types of Electrical Underground Cables

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Description: Types of Electrical Underground Cables

Specification: 66KV YJV22

Application:

It is used to transmit and distribute power in power transmission and distribution system of 66kV or higher.
It is generally applied to the fields including power, construction, mines, metallurgy, petrochemical industry and communication in complete replace of oil immersed paper insulated power cable and in partial replace of PVC insulated power cable.

Using Features:

1. Rated voltage: Uo/U: 38/66kv ,26/35kV, 21/35kV, 12/20 kV (24 kV), 8.7/10kV, 8.7/15kV, 6/6kV, 6/10kV.

2. No. of core: Single-core, Three-core.

3. The highest allowed operating temperature of conductor for long-term working is 90oC. In short-circuit (Max. Long-term is no more than 5 seconds). The highest temperature for conductor is no more than 250.

4. D.C Resistance of the conductor complies with the stipulations of GB/T3956-1997.

5. The environment temperature should be no lower than 0 when lay. Otherwise it should be preheated.

6. The cable is laid without horizontal drop limit. The Min. Bending radius of three-core cable should be no smaller than 12 times of cable outer diameter.

7. Working Frequency Voltage Test:.

For cable with Uo of 3.6kV or lower: 2.5Uo+2kV/5min without puncture.
For cable with Uo of 3.6kv~18kV: 3.5Uo/5min without puncture.
For cable with Uo of 21kV and 26 kV: 2.5Uo/30min without puncture.

8. Partial Discharge Test: The discharge volume should be no more than 10pC under 1.73Uo for the cable.

This series includes:

Copper (aluminum) core, XLPE insulated and sheathed power cables.

Copper (aluminum) core, XLPE insulated, PE sheathed power cables.

Copper (aluminum) core, XLPE insulated, steel tape armoring PVC sheathed power cables.

Copper (aluminum) core, XLPE insulated, steel tape armoring, PE sheathed power cables.

Copper (aluminum) core, XLPE insulated, steel wire armoring, PVC sheathed power Cables.

Copper (aluminum) core, XLPE insulated, steel wire armoring, PE sheathed power cables

Rated voltage: 0.6/1kV, 3.6/6kV.

Number of cores: 1 to 6.

Relative manufacturing standards: IEC60505, BS, DIN.

Packing: Wooden drum, steel wooden drum.

Power Cable

-Conductor:
Solid or stranded copper

-Insulation:
Cross-linked polyethylene( XLPE or PVC)

-Circuit Identication:
The insulation shall be red, black

-Filler:
Polypropylene lament with lapped binding tape

-Inner Sheath:
Polyvinyl chloride (Black)

-Armor:
Galvanized steel wire

-Core-covering:
Binding tape

-Outer Sheath:
Polyvinyl chloride (Black)

-Application:
For use in ducts, trays and direct burial in ground. The cable is subject to immerse in water all the time.

-Standards / Testing Specications:
IEC 60502-1.

Installation

This cable can be installed in duct, tray or direct burial. It is recommended that the installation instructions indicated by the Local Electric Code, or any equivalent, be followed,so that the safeguarding of persons and the integrity of the product will not be affected by eciencies in the installation.

1. The products are mainly complying with IEC 60502 standard, also can be produced according to OEM requirements and other standards, such as BS standard, DIN standard, ASTM standard, etc.

Voltage grade is up to 35kv, cross-section area can be up to 400 sqmm (copper or aluminiun conductor). Conductor long-time operating temperature is 90 degrees. In short circuit, conductor highest temperature should be not more than 250 degrees.

2. Brief Construction:

Single core or multi-core

Copper or aluminium conductor

XLPE insulation

Copper tape or copper wire screen

Galvanized steel wire arm