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Medium Voltage Underground Power Cables

Medium Voltage Underground Power Cables

Details

Medium Voltage Underground Power Cables


XLPE insulated cables

with XLPE-insulation
The XLPE-insulation possesses very good electrical,mechanical and thermal characteristics in medium voltage networks. This type of insulation is excellent chemical resistant and also resistant to cold. Due to various advantages, the XLPE-insulated type has vastly displaced the traditional classical paper insulated types in many sectors.
The XLPE-insulated medium voltage cables are designed with longitudinally water-proof. In compa-rison to PVC and paper-insulated cables, the advan-tages of XLPE-insulated medium voltage power cables are possessing a low dielectric factor.
The good properties of XLPE-insulated cables remain constant at a long temperature range. These cables can be laid in earth, in air or in tubes. Further information for laying, bending radius ambient temperatures, permissible tensile strength with pulling head test voltages should be taken in the following pages.

xlpe power cable

Medium Voltage Underground Power Cables Constructions

Conductor

Compact Stranded Copper Conductor, Class 2 as per IEC 60228

Circular solid Copper Conductor, Class 1 as per IEC 60228

Flexible Stranded Copper Conductor, Class 5 as per IEC 60228

Conductor Screen

Semi-conductor (MV only)

Insulation

XLPE(Cross-linked polyethylene)

Insulation Screen

Semi-conductor (MV only)

Separate Screen

Copper Tape or wire (MV must, LV optional)

Filler

PP Yarn

Wrapping Tape

PP

Inner Covering

Extruded PVC (MV only)

Armour

Steel Wire, or Steel Tape, or Aluminium wire optional

Overall Sheath

PVC or PE

Medium Voltage Underground Power Cables

Applications

Used for power transmission and distribution line with voltage rated at 35kV and below.Compared with PVC Insulated Power Cable, xlpe power cable boasts not only characteristics of excellent electricity, mechanism, heat and aging-resistant, environment stress-resistant and chemical corrosion-resistant, but also simple structure, light weight, no restriction by laying drop, and high temperature allowance for long-term working.

 

Medium Voltage Underground Power Cables Standards

International: IEC 60502-2, IEC 60228

China: GB/T 12706.2-2008

Other standards such as BS,DIN and ICEA upon request

Medium Voltage Underground Power Cables

Technical data

Rated voltage: 0.6/1kV, 1.8/3kV, 6/10kV, 8.7/10kV, 8.7/15kV, 12/20kV, 21/35kV, 26/35kV

Maximum Conductor Temperature: under normal (90°C), emergency (130°C) or short circuit no more than 5 s (250°C) conditions.

Min. Ambient Temp. 0°C, after installation and only when cable is in a fixed position

Min. Bending Radius: 20 x cable O.D for single-core non-armoured cables

                   15 x cable O.D for single-core armoured cables

                    15 x cable O.D for multi-core non-armoured cables

                   12 x cable O.D for multi-core armoured cables


China Type

 

Description

Application

Cu

Al

YJV

YJLV

XLPE insulation PVC sheath power cable (Cu/XLPE/PVC)

To be laid indoors, in tunnel, cable furrow or pipe, the cable couldn't bear mechanical force outside 

YJY

YJLY

XLPE insulation PE sheath power cable (Cu/XLPE/PE)

YJV22

YJLV22

 XLPE insulation, steel tape armor,  PVC sheath power cable

(Cu/XLPE/PVC/STA/PVC)

To be laid underground, the cable could bear certain mechanical force, but it couldn't bear great pulling force.

YJV23

YJLV23

XLPE insulation, steel tape armor,  PE sheath power cable

(Cu/XLPE/PVC/STA/PE)

YJV62

YJLV62

XLPE insulation,  no  magnetism steel tape armor,  PE sheath power cable

YJV32

YJLV32

XLPE insulation, thin steel-wire  armor,  PVC sheath power cable

(Cu/XLPE/PVC/SWA/PVC)

Be applicable to the well, water inside and fall in the bad soil, the cable cans bear the equal dint outside the machine with pull the dint

.

YJV72

YJLV72

XLPE insulation, have no the magnetism thick steel-wire  armor,  PVC sheath power cable

YJV42

YJLV42

XLPE insulation, thick steel-wire  armor,  PVC sheath power cable

Be applicable to the well, underwater with the bottom of sea, the cable cans bear the bigger pressure with lead to pull the dint.

we are one of top electric cable manufacture in north of china,main product include xlpe power cable,armoured cable,swa cable,single core cable,2 3 4 core armoured cable.

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