MV CCV Line for Medium Voltage Cable

MV CCV Line for Medium Voltage Cable
MV CCV Line for Medium Voltage Cable
MV CCV Line for Medium Voltage Cable
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35kV Cable Extrusion Line, Triple Extrusion

MV Cable Triple Extrusion Line (6 Sections)

Voltage class XLPE: 6-35kV
Conductor size Cu: 25-630mm2 Al: 35-800mm2
Max. cable weight 10kg/m
Max. cable diameter 70mm
Cable construction Conductor screen
(inner semiconductor layer) 0.5-2mm		 Insulation 3.4-12mm Insulation screen
(outer semiconductor layer) 0.5-2mm
Line speed 0-30m/min
Line execution Half catenary
Length of cross-linking section Approx. 41m/6 sections
(6 tubes)
Length of pre-cooling section 12m/2 sections (2 tubes)
Length of cooling section 54m/9 sections (9 tubes)
Arrangement of extruders Φ65 extruder for conductor screen
Φ150 extruder for cross-linked polyethylene (XIPE)
Φ90 extruder for insulation screen
Electricity Installation capacity 750kVA 380V ±10% 50Hz±1% 3 phase 4 wire
Water Water pressure 0.2-0.6MPa Water consumption 15m3/h
(circulating water from reservoir)
Compressed air 0.6-0.8MPa Air consumption 0.8m3/min
Nitrogen Pressure 2.0-2.5MPa Purity 99.5% Consumption 1-2m3/h
Nitrogen storage tank ≥6m3 (1 pc)

MV Cable Triple Extrusion Line (9 Sections)

Voltage class XLPE: 6-35kV
Conductor size Cu: 25-630mm2 Al: 35-800mm2
Max. cable weight 10kg/m
Max. cable diameter 70mm
Cable construction Conductor screen
(inner semiconductor layer) 0.5-2mm 		Insulation 3.4-12mm Insulation screen
(outer semiconductor layer) 0.5-2mm
Line speed 0-30m/min
Line execution Half catenary
Length of cross-linking section Approx. 54m/9 sections
(9 tubes)
Length of pre-cooling section 12m/2 sections
(2 tubes)
Length of cooling section 90m/15 sections (15 tubes)
Arrangement of extruders Φ80 extruder for conductor screen
Φ175 extruder for cross-linked polyethylene (XIPE)
Φ100 extruder for insulation screen
Electricity Installation capacity 1050kVA 380V ±10% 50Hz±1% 3 phase 4 wire
Water Water pressure 0.2-0.6MPa Water consumption 15m3/h
(circulating water from reservoir)
Compressed air 0.6-0.8MPa Air consumption 0.8m3/min
Nitrogen Pressure 2.0-2.5MPa Purity 99.5% Consumption 1-2m3/h
Nitrogen storage tank ≥6m3 (1 pc)×2

Extruder & Crosshead

Extruder
Three-layer Crosshead
Triple extrusion lines have three extruders connected to one common three-layer crosshead for the simultaneous extrusion of conductor screen layer, insulation layer and insulation screen layer.

Technical Data of Extruders
    65/20D Extruder
  • Max. screw speed: 46.5rpm
  • Gear reduction ratio: 32:1
  • Extrusion output: 35kg/h
  • Used for extruding conductor screen layer (inner semiconductor layer)
    90/20D Extruder
  • Max. screw speed: 41.5rpm
  • Gear reduction ratio: 36:1
  • Extrusion output: 60kg/h
  • Used for extruding insulation screen layer (outer semiconductor layer)
    150/25D Extruder
  • Max. screw speed: 40rpm
  • Gear reduction ratio: 37.5:1
  • Extrusion output: 250kg/h
  • Used for extruding insulation layer
Technical Data of Three-layer Crosshead
    Technical Parameters
  • Conductor diameter: 6-34mm
  • Max. cable diameter: 70mm
  • Extrusion thickness:
    First layer: 0.5-2.0mm
    Second layer: 2.0-12mm
    Third layer: 0.5-2.0mm
  • Heating method: oil or water heating
    Features
  • Designed with circulating distribution flow channel and restrictor ring, the length of flow distributors and crosshead is greatly shortened in contrast to other three-layer crosshead, thus reducing its weight;
  • Easy to disassemble for convenient cleaning;
  • Providing great convenience and ease of alignment during extrusion process;

Control System

  • Highly resistant to interference, minimum fluctuation of cables in tube, ensuring stable running and easy to maintain;
  • Control system is placed at the middle part of heating zone, it can protect cables from contacting the tube wall during heating process;
  • When the control receives the signal of cable position, the rotation speed of lower capstan (pulling) will be adjusted accordantly;
Details

Portal Upper Beam Travelling Pay-Off Stand

Features
  • Gantry structure with mechatronic design, achieving reciprocating motion while keeping the alignment of center line when paying off;
  • Shaftless pay-off reel moves up and down between two posts, driven by AC motor;
  • Dancer is adopted for speed control;
  • Pay-off stand can achieve rotation in both positive and negative directions;
  • Touch screen allows operator to input technical parameters easily and conveniently;
  • The pay-off stand is independently controlled;
Specifications
  • Drum diameter: 1600-2500mm (GB4004-84, PN Type)
  • Drum width: 1180-1900mm
  • Drum weight: Max.16t
  • Pay off tension: 5000N
  • Main drive: 5.5kW DC motor, 4 quadrant, Parker 590P (original Eurotherm)
  • Dancer: used for speed control, keeping the cable aligned with center line when paying off

Horizontal Accumulator

Specifications
  • Accumulation length: 120m
  • Pulley diameter: 1600mm
  • Tension control: Siemens 200 Smart PLC Parker 590P Drive (original Eurotherm), 300-3200N adjustable
  • Traction wheel speed: 0-2m/min

Capstan

Lower Pull-Out Caterpillar Lower Pull-Out Capstan
Features
  • Used for pulling cable conductors from lower level to desired height;
  • Belt wrap capstan (or caterpillar capstan) operates synchronously in CCV line;
  • Conductor positioning unit ensures the cable conductors of different sizes placed in alignment with the center of the crosshead;
  • Transmission unit adopts fixed base, spiral bevel gear reducer and DC motor;
Specifications
  • Pulling method: belt wrap capstan
  • Capstan wheel diameter: 2000mm
  • Adjusting range: 0-30m/min (four gear shifts)
  • Pulling force: max. 30kN
  • Belt contact length: 3m or above
  • Cable diameter: up to 100mm
  • Speed sensor equipped with line speed meter
  • Main drive: 11kW DC motor, Parker 590P drive

Belt-type Twister with Angle Adjustment

Specifications
  • Twister weight: 650kg
  • Overall dimensions: 1525mm×975mm×1243mm
  • 26 grooved passive wheels are mounted on both sides. The distance between wheel sets on both sides is adjustable ranging from 2 to 200mm. The wheel sets move on both sides.
  • The rollers on both sides can be adjusted by ±50mm, which is calibrated by the caliper. Max. wire diameter passing through is 70mm.
  • The center height is 1m. (If the height is not consistent with the outlet of end seal, cut off the footing to change the center height.)
  • The twister comes with a welded machine body, a passive transmission mechanism, and a semi-enclosed stainless steel cover.
  • It’s installed between the end seal and pull-out capstan.
  • Belt width: 150mm, thickness: 20mm

Accumulator & Upper Auxiliary Caterpillar

  • Accumulator
  • End Seal
  • Extruder
  • Lower Capstan
  • Pay off Stand
  • Upper Capstan
  • 35kV Cable Extrusion Line
Tags
  • cable extrusion solutions
  • triple cross head
  • simultaneous extrusion
  • MV triple extrusion line
  • dry cure catenary continuous vulcanization
  • cable extruder
  • haul off caterpillar
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