Direct Current High Voltage Cable Accessories - Product Description
Overview Our DC high voltage cable accessories series (rated for ±100kV to ±500kV) are engineered for seamless integration into high-voltage direct current (HVDC) transmission systems. These accessories facilitate reliable connections between DC power cables and critical infrastructure such as transformers, switchgear, or overhead lines. Featuring advanced sealing technology, they combine superior electrical performance, stress control, and moisture resistance into a single robust solution. Designed for extreme environments, these accessories deliver exceptional anti-pollution, anti-aging, and explosion-proof properties, ensuring long-term stability across diverse grid conditions.
Standards
All products comply with global and industry-specific standards, including: International: IEC 62895 (HVDC cable accessories), IEEE 1523 National: GB/T 22078 (DC extruded cable systems) Rigorous routine and type tests validate compliance with operational and safety requirements.
Construction
Multi-Layer Insulation: Cross-linked polyethylene (XLPE) or silicone rubber for optimized dielectric strength.
Conductive Shielding: Uniform electric field distribution to minimize partial discharge.
Hermetic Sealing: Triple-sealed joints with EPDM/thermoplastic materials for moisture and gas ingress prevention.
Stress Control: Integrated geometric/electrostatic stress-relief components. Explosion Resistance:
Reinforced insulation and flame-retardant housing (e.g., composite polymer).
Key Parameters
Voltage Class: ±100kV to ±500kV (customizable for ±800kV systems)
Temperature Range: -40°C to +90°C (operational), up to +130°C (short-circuit)
Bending Radius: ≤20x cable OD (post-installation)
Protection Rating: IP68 (submersible) Short-Current Withstand: 25kA/2s
Product Content
DC cable terminations (indoor/outdoor) Straight/joint connectors (GIS or air-insulated) Surge arresters and insulating bushings Pre-molded stress cones and grounding kits Installation toolkits (torque wrenches, cleaning agents) Technical Data Parameter Value Rated Voltage (kV) ±100 to ±500 Lightning Impulse (kV) 550–1800 (BIL) DC Withstand Voltage 1.8x rated voltage, 30min Capacitance (pF/m) ≤150 Partial Discharge <5pC at 1.5x rated voltage Short-Circuit Current 25kA for 2 seconds
Features
Unified Performance: Integrated electrical, mechanical, and environmental protection. Corona Resistance: Advanced grading electrodes to suppress partial discharge.
Climate Resilience: UV-resistant, hydrophobic surfaces for coastal/desert applications.
Explosion Safety: Non-fragmenting design under fault conditions.
Plug-and-Play: Pre-assembled modules reduce installation time by 40%.
Application
HVDC transmission lines (land/subsea) Renewable energy integration (offshore wind, solar farms) Industrial DC grids (metro systems, data centers) Cross-border grid interconnections (UHVDC projects)
Packing & Shipping
Packaging: Anti-static, shock-absorbent crates with desiccant packs. Labeling: Barcoded for traceability; rated voltage, weight, and handling symbols printed. Compliance: Meets IMDG/IATA for global logistics.
Lead Time: 4–8 weeks (standard), expedited options available.
Optimized for: direct current high voltage cable accessories, HVDC cable terminations, DC cable connectors, ±500kV cable systems, IEC 62895 compliant accessories.
Direct Current High Voltage Cable Accessories - Product Description
Overview Our DC high voltage cable accessories series (rated for ±100kV to ±500kV) are engineered for seamless integration into high-voltage direct current (HVDC) transmission systems. These accessories facilitate reliable connections between DC power cables and critical infrastructure such as transformers, switchgear, or overhead lines. Featuring advanced sealing technology, they combine superior electrical performance, stress control, and moisture resistance into a single robust solution. Designed for extreme environments, these accessories deliver exceptional anti-pollution, anti-aging, and explosion-proof properties, ensuring long-term stability across diverse grid conditions.
Standards
All products comply with global and industry-specific standards, including: International: IEC 62895 (HVDC cable accessories), IEEE 1523 National: GB/T 22078 (DC extruded cable systems) Rigorous routine and type tests validate compliance with operational and safety requirements.
Construction
Multi-Layer Insulation: Cross-linked polyethylene (XLPE) or silicone rubber for optimized dielectric strength.
Conductive Shielding: Uniform electric field distribution to minimize partial discharge.
Hermetic Sealing: Triple-sealed joints with EPDM/thermoplastic materials for moisture and gas ingress prevention.
Stress Control: Integrated geometric/electrostatic stress-relief components. Explosion Resistance:
Reinforced insulation and flame-retardant housing (e.g., composite polymer).
Key Parameters
Voltage Class: ±100kV to ±500kV (customizable for ±800kV systems)
Temperature Range: -40°C to +90°C (operational), up to +130°C (short-circuit)
Bending Radius: ≤20x cable OD (post-installation)
Protection Rating: IP68 (submersible) Short-Current Withstand: 25kA/2s
Product Content
DC cable terminations (indoor/outdoor) Straight/joint connectors (GIS or air-insulated) Surge arresters and insulating bushings Pre-molded stress cones and grounding kits Installation toolkits (torque wrenches, cleaning agents) Technical Data Parameter Value Rated Voltage (kV) ±100 to ±500 Lightning Impulse (kV) 550–1800 (BIL) DC Withstand Voltage 1.8x rated voltage, 30min Capacitance (pF/m) ≤150 Partial Discharge <5pC at 1.5x rated voltage Short-Circuit Current 25kA for 2 seconds
Features
Unified Performance: Integrated electrical, mechanical, and environmental protection. Corona Resistance: Advanced grading electrodes to suppress partial discharge.
Climate Resilience: UV-resistant, hydrophobic surfaces for coastal/desert applications.
Explosion Safety: Non-fragmenting design under fault conditions.
Plug-and-Play: Pre-assembled modules reduce installation time by 40%.
Application
HVDC transmission lines (land/subsea) Renewable energy integration (offshore wind, solar farms) Industrial DC grids (metro systems, data centers) Cross-border grid interconnections (UHVDC projects)
Packing & Shipping
Packaging: Anti-static, shock-absorbent crates with desiccant packs. Labeling: Barcoded for traceability; rated voltage, weight, and handling symbols printed. Compliance: Meets IMDG/IATA for global logistics.
Lead Time: 4–8 weeks (standard), expedited options available.
Optimized for: direct current high voltage cable accessories, HVDC cable terminations, DC cable connectors, ±500kV cable systems, IEC 62895 compliant accessories.
