9 P-Laser technology P-Laser cable technology is based on a High-Performance Thermoplastic Elastomer (HPTE) insulation, an in-house developed insulation material based on polypropylene. The excellent electrical properties of polypropylene are well known; however, intensive R&D work was needed to achieve a combination of excellent values of flexibility and thermomechanical properties. Compared to XLPE, HPTE does not require any crosslinking process and therefore does not require the time and energy consuming degassing process. Being intrinsically free of any cross-linking by products, P-Laser insulation performances are outstanding, and it can safely withstand demanding electrical stresses such as polarity reversals and transient overvoltages. MAIN P-LASER TECHNOLOGY ADVANTAGES: PERFORMANCES: High transmittable power, help avoiding hotspot issues along the route, easier to switch to aluminum conductors Lower environmental impact and carbon footprint Insulation and accessories tested up to 600 kV DC Underground cable systems fully qualified up to 525 kV in accordance with CIGRE Technical Brochure 852 Full compatibility with existing HVDC cable accessories P-laser cables in construction phase for >1000 km 320 kV and 525 kV HVDC projects High operating temperature up to 90°C High electrical strength, capable to better withstand polarity reversals and transient overvoltages Reduction of CO2 emissions by up to 30% and 100% eco-friendly and fully recyclable materials* *Refers to the end-of-life phase of Life Cycle Assessment (LCA) evaluation HPTE is designed for operation at 90°C. This allows, in comparison to operation at 70°C, to either transmit more power or to reduce the cable cross section and thus investment costs. Also, this feature can be used to operate the link at increased safety margins. PLaser is fully recyclable, a key advantage for the end of life stage of obsolete HVDC links. As the production process with PLaser has a low energy consumption, it has an overall reduced carbon footprint compared to XLPE up to 30%. P-Laser technology is fully compatible with existing cable accessories and can be integrated in networks using different insulation technologies.
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