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 60840, GB/T 11017.
Technical Parameters
| Item | Technical Specifications | |||
Voltage Level（kV） | 38/66(72.5) kV | 64/110(126) kV | 76/132(145)kV | 87/150(170) kV |
Rated Voltage (U₀/U) | 38/66kV | 64/110kV | 76/132kV | 87/150 kV |
Highest System Voltage (Uₘ) | 72.5 kV | 126 kV | 145kV | 170kV |
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 | 325 | 550 | 650 | 750 |
Creepage Distance /mm | ≥4500 | |||
Pollution Level | Ⅳ | |||
Height /mm | 2985 | 2985 | 2985 | 3906 |
Net Weight (Excluding Cable) / kg | ~230 | ~230 | ~230 | ~300 |
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 temerature(-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) |
38/66/72 | YJZWY4 38/66 | 300~2000 | 50~87 |
64/110/126 | YJZWY4 64/110 | 240~1600 | 50~87 |
76/132/145 | YJZWY4 76/132 | 240~1400 | 50~87 |
87/150/170 | YJZWY4 87/150 | 240~1600 | 50~87 |
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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