Our HVDC cable accessories are designed for high voltage direct current cable systems used in power transmission and grid interconnection projects. The product range can include terminations, straight joints, connectors, and related accessory solutions for extruded-insulation cable systems, helping support reliable electrical performance, installation integrity, and long-term operation in demanding land power applications.
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Encompassing a comprehensive range of components such as terminations, straight joints, elbow joints, and cable connectors, these accessories are specifically designed to manage voltages exceeding ±500 kV while maintaining industry-leading power loss rates below 0.02% per kilometer. Constructed using a proprietary blend of corrosion-resistant epoxy composites and advanced XLPE-based insulation, they deliver exceptional performance in extreme environments—from sub-zero polar regions to high-humidity coastal areas. Whether deployed in offshore wind farm interconnections, transnational grid synchronizations, or large-scale industrial power distribution networks, these accessories ensure uninterrupted power flow with a mean time between failures (MTBF) exceeding 15,000 operational hours.
High Voltage Resistance: Rigorously tested to withstand ±800 kV transient voltages and continuous operation at ±660 kV, these accessories incorporate multi-layer insulation structures that prevent partial discharge even under thermal cycling conditions.
Conductive Shielding: Equipped with a 0.1mm thick electrolytic copper tape shield helically wrapped with uniform tension, effectively reducing electromagnetic interference (EMI) by up to 90% and ensuring signal integrity in adjacent communication cables.
Insulation Fluid Technology: Utilizes high-purity silicone-based insulating fluid with a dielectric constant of 3.8, maintaining stable electrical performance across a temperature range of -40°C to +90°C and resisting oxidation for over 20 years.
Modular Design: Featuring tool-free connection mechanisms and adjustable clamping systems, these accessories accommodate cable diameters from 25–500 mm² and facilitate on-site installation in as little as 4 hours per joint, significantly minimizing maintenance-related downtime.
Renewable Energy Integration: Serve as critical links in connecting offshore wind farms to onshore grids, where their low-loss feature ensures maximum energy transmission from remote wind turbine arrays to mainland distribution networks. Notable installations include the UK’s Dogger Bank Wind Farm interconnection system.
Industrial Power Grids: Provide reliable power distribution in harsh industrial environments such as mining operations, oil refineries, and chemical plants, where their resistance to chemical corrosion and mechanical stress ensures long-term operational stability.
Cross-Border Transmission: Enable efficient HVDC links between nations, exemplified by their deployment in projects like the EuroAfrica Interconnector, which facilitates electricity exchange between Europe and Africa with minimal transmission losses.
Q: Are these accessories compatible with XLPE-insulated cables?
A: Yes, they are specifically engineered for seamless integration with XLPE and EPR-insulated cables, featuring matching insulation parameters and mechanical compatibility to ensure joint integrity.
Q: What certifications do they hold?
A: They fully comply with IEC 62067 (High-voltage direct current (HVDC) power transmission cables and accessories for rated voltages above 52 kV) and IEEE 48 standards, undergoing rigorous third-party testing to validate performance and safety.
Q: Can they operate in saltwater environments?
A: Absolutely. The 316L stainless steel housing combined with marine-grade fluoropolymer coatings creates a robust barrier against saltwater corrosion, making them ideal for offshore and coastal installations with a projected service life of over 30 years.
