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11kv High Voltage Underground Power Cable
Specifications
XLPE electric cable
1.IEC standard
2.Low /high voltage
3, Copper/aluminum conductor
4.PVC/XLPE insulation, jacket,armored
XLPE electric cable
1. Introduction
For XLPE insulated power cable, either chemical method or physical method is employed to transform the molecular structure of PE from chain into three-dimensional network, i.e. thermo-plastic PE is transformed into thermosetting XLPE. After cr·oss-linking, the thermal and mechanical properties of PE have been greatly improved while its excellent electrical property are still retained.
The maximum permissible operating of the conductor of a XLPE insulated power cable is 90°C.which is higher than that of paper, PVC or PE insulated power cable. The cable has the advantage of simplicity in construction, lightness in weight, convenience in application besides its excellent electrical, thermal, mechanical and anti-chemical corrosion properties. It can also be laid with no limitation of level difference along the route.
The mechanical and electrical properties of these cables are accordant with GB/T12706-2002 Power cables extruded insulation and their accessories of elated voltages 1kV(Um=1.2kV)up to 35kV(Um=40.5kV) and IEC60502-1997 Extruded insulation power cables and appendices for rated voltages 1kV up to 30kV.
2 The product is manufactured according to the standard of GB/12706-2002 or IEC,BS,DIN and ICEA upon request.
3 .The product is suitable for use in power transmission and distribution lines with rated power frequency voltage 0.6/1 kV~26/35 kV.
4. Instruction of application
4.1 Rated voltages: 0.6/1 kV~26/35 kV
4.2 The ambient temperature for installation: ≥0°C
4.3 Maximum conductor temperature in normal operation:≤90°C
4.4 Max operating temperature of con. When cable short-circuited (5s maximum duration): 250°C
4.5 Permissible bending radius:
Single cable: [20(D+d) ±5%] mm
Multi cable:[15(D+d) ±5%] mm
5,Type,designation and application
Type | Designation | Application | |
Cu | Al | ||
YJV | YJLV | XLPE insulated PVC sheathed power cable | Suitable for indoor, channels, conduits. Unable to bear mechanical stress. |
YJY | YJLY | XLPE insulated PE sheathed power cable | |
YJV22 | YJLV22 | XLPE insulated steel-tape armored PVC sheathed power cable | Suitable for under ground, can bear mechanical stress, but can not endure large pulling force. |
YJV23 | YJLV23 | XLPE insulated steel-tape armored PE sheathed power cable | |
YJV32 | YJLV32 | XLPE insulated fine steel-wire armored PVC sheathed power cable | Can be installed in vertical well, and bear large mechanical pulling force. |
YJV42 | YJLV42 | XLPE insulated steel-wire armored PVC sheathed power cable | |
YJV33 | YJLV33 | XLPE insulated fine steel-wire armored PE sheathed power cable | |
YJV43 | YJLV43 | XLPE insulated steel-wire armored PE sheathed power cable | |
Note: a,Single core cable armored material is non magnetic material.
b,our company can produce flame-retardant, fire-resistant, anti-termite, LSZH, small smoke and low halogen cables according to customer's requirements.
1. Flame-retardant power cable: add "ZRA-, ZRB-, and ZRC-"before above model no.
2. Fire-resistant power cable: add "NH-"before above model no.
3. LSZH power cable: add "DWZR-"before above model no.
4. Small smoke and low halogen power cable: add "DDZR-"before above model no.