Some of the world's leading cable manufacturers of ultra-high pressure technology features. 

the following:

highlight the world famous brands: Nexanson, as well as France's snow grams company (SILEC), Prysmian, South Germany and other companies, their ultra-high voltage cable manufacturing Some of the characteristics of the process.

Reference materials are limited, some slightly over, please forgive me

Nexanson

Using MDCV process, the conductor cross-section of 800mm2, the use of non-segmented conductor structure, (800mm2 above the use of split conductor structure), the nominal thickness of insulating layer 35.6mm, metal sets of welding flat aluminum sets, outer jacket with flame retardant PE material, The program is a serpentine arrangement.

Nexans metal welding aluminum sets Features:

Metal belt in the horizontal direction and the cable axis parallel to the line, aluminum edge is cut, the surface clean and accurate width, aluminum through a series of plastic mold and cable diameter of the same, the cable from the mold into the aluminum without contact, adjust The aluminum belt is shaped until its edge is close to the cable and has a certain pressure. 

The seam is welded with a laser beam. The weld is inspected by the camera. The welding quality control system detects any defects by means of eddy currents. After passing through a series of molds Shrink, cable and aluminum tube and then traction through the crawler traction equipment, this track traction equipment, control the entire line speed.

Nexans XLPE Cable Construction:

1. copper conductor → conductor shield → insulation → insulation shield → expansion zone → copper wire → anti-bar copper belt → expansion zone → aluminum belt → PE jacket

2. copper conductor → conductor shield → insulation → insulation shield → semi-conductive belt → aluminum belt → PE outer jacket

3. copper conductor → conductor shield → insulation → insulation shield → expansion zone and copper wire shield → expansion zone → aluminum sleeve / (lead) with → PE outer jacket

French company (SILEC)

Using VCV process, the conductor adopts the segmented conductor, the metal sleeve aluminum-plastic composite waterproof layer and the aluminum wire shielding structure, the insulation nominal thickness is 32.0mm. Outer jacket with flame retardant PE material, the design scheme for the serpentine layout; with 500kV and 400kV XLPE cable supply performance is mainly distributed in Europe and China.

Prysmian

Using MDCV process, the conductor cross-section of 1000mm2, using four-segment conductor structure, insulation nominal thickness of 30.2mm, metal sleeve for the welding of aluminum sets, outer jacket with flame retardant PE material.

South of Germany

Using MDCV process, conductor six-segment conductor structure, insulation nominal thickness of 34.0mm, metal sets with copper and copper wire shielding structure, the outer jacket with flame retardant PE material.

JPS company

VCV process, conductor cross-section of 800mm2, the use of four-segment conductor structure, the nominal thickness of insulating layer 31.4mm, metal sleeve with extruded corrugated aluminum sets, outer jacket with flame retardant PVC material, the design for the serpentine layout.

VISCASC

VCV process, conductor cross-section of 800mm2, with five partitions, insulation nominal thickness of 30.0mm, metal sets of extruded wrinkled aluminum sets. Outer jacket with flame retardant PVC material.

Furukawa company

Section of 800mm2, the use of five sub-tightening yuan-shaped stranded conductor. Buffer layer: package thickness 0.25mm, 3 layers, cover 50%, metal strip thickness 0.25mm cover 50%. To gas:> 350 hours.