Baicheng's vertical continuous vulcanization line (VCV line) is designed in response to the popularity of XLPE cables in high voltage application. In particular, the quality of high voltage and extra high voltage power cables plays an essential role in the safety of electric system.
This vertical cable extrusion line is particularly used for manufacturing high quality XLPE insulated power cables of voltages ranging between 35kV and 220k. It mainly comprises pay-off stand, accumulator, capstan, extruder, three-layer crosshead, take-up stand, etc.
| Voltage class | XLPE: 35-220kV | ||
| Conductor size | Cu: 150-2000mm2 Al: 150-2000mm2 | ||
| Max. cable weight | 34kg/m | ||
| Max. cable diameter | 140mm | ||
| Cable construction | Conductor screen (inner semiconductor layer) 0.6-2mm |
Insulation 4.5-40mm | Insulation screen (outer semiconductor layer) 0.6-3mm |
| Wire core diameter | 14.6-56.1mm | ||
| Line speed | 0.2-8m/min | ||
| Line execution | VCV tower (U type/L type available) | ||
| Arrangement of extruders |
Φ80-Φ175-Φ90 three-layer extrusion Φ80 extruder for conductor screen Φ175 extruder for cross-linked polyethylene (XIPE) Φ90 extruder for insulation screen |
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| Electricity | Installation capacity 1000kVA | 380 V ±10% 50Hz±1% | 3 phase 4 wire |
| Compressed air | 0.6-0.8MPa | Air consumption 0.5m3/min | |
| Nitrogen | Pressure 2.0-2.5MPa | Purity 99.5% | Consumption 1-2m3/h |
The control system makes sure the entire VCV line run synchronously. All the electrical drive systems can work simultaneously, or to be controlled independently by single machine. Emergency stop is possible for individual units such as pay-offs, accumulators, extruders and take-ups respectively.
