Promouded stress cone is designed using the geometric method, combined with sufficient interface pressure, which can effectively achieve uniform distribution of the electric field and ensure the long-term service of the product.
Wtih sufficient electrical safety desgin;
The high-strength porcelain insulator has excellent resistance to ultraviolet; rays and self-cleaning capabilities;
Using polyisobutylene insulating oil matched with the silicone rubber stress cone, fully ensuring the long-term insulation performance of the product;
Mature design with extensive successful operational experience.
Application
• Connects cables to overhead lines/copper busbars.
Compatible Cables
• Cable Type: XLPE or other polymer-insulated, single-core copper/aluminum conductor HV power cables;
• Metallic Screen: Aluminum sheath, lead sheath, copper wire + aluminium copolymer tape, etc.
Product Application Standards
Applicable standards: IEC 62067, GB/T 22078.
Technical Parameters
| Item | Technical Specifications |
Voltage Level（kV） | 290/500 (550) kV |
Rated Voltage (U₀ / U) | 290/500kV |
Highest System Voltage (Uₘ) | 550 kV |
Partial Discharge Test /pC | At 1.5 U₀: no detectable PD above specified sensitivity |
Power Frequency Withstand Voltage /kV | At 2.0 U₀ for 30 min, no breakdown or flashover |
Lightning Impulse Level /kV | 1550 |
Creepage Distance /mm | ≥19000 |
Pollution Level | Ⅳ |
Height /mm | 6000（Total Height)）*5000(Bushing） |
Net Weight (Excluding Cable) / kg | ~1900 |
Optional Solutions
• Products with increased creepage distance for high-altitude areas;
• Crimping or mechanical connection method between the top connector and cable conductor;
• Optical fiber lead-out design;
• Lower temperature(-60℃) O ring can be selected to meet special circumstance.
Operating Conditions
• Ambient Temperature: -55°C to 45°C;
• Installed on outdoor platforms or towers,includes in areas with few people and equipment, such as at the seaside or with severe pollution areas;
• Installation altitude: ≤ 2000 meters (For high-altitude areas, products with increased creepage distance should be selected based on specific conditions).
Storage Conditions
• Optimal Storage Temperature: 10°C to 25°C
• Storage Environment: Indoor, sealed, clean, dry, and protected from heavy pressure.
Available Termination Selection (Recommended by Cable Insulation Diameter)
Voltage Level（kV） | Product Type | Conductor Size Range（mm²) | Cable Insulation Diameter(mm) |
290/500/550 | YJZWY4 290/500 | 800~2500 | 100~135 |
Note:If the Termination’s specification is outside the above ranges can be customized based on cable section and insulation diameter.
Copyright © 2026 Angelor (Jiangsu) Intelligent Electric co.,LTD.