Premolded stress cone with geometric design,combined with sufficient interface pressure ensures effective electric field control and long-term reliability;
Wtih sufficient electrical safety desgin;
Using polyisobutylene insulating oil matched with the silicone rubber stress cone, fully ensuring the long-term insulation performance of the product;
The product is lightweight, easy to install, and poses an extremely low risk of damage to surrounding equipment during operation;
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 |
Rated Voltage (U0 / U) | 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 | ≥17050 |
Pollution Level | Ⅳ |
Height /mm | 6000（Total Height)）*5000(Bushing） |
Net Weight (Excluding Cable) / kg | ~2000 |
Optional Solutions
•Products with increased creepage distance for high-altitude areas;
• Crimping or mechanical connection method between the outgoing rod and cable conductor;
• Optical fiber port 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 vertical towers, including power stations and in lines and so on;
• 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.
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