The premolded stress cone, designed using geometrical electric field control and combined with sufficient interface pressure, ensures uniform electric field distribution and long-term reliable operation;
Sufficient electrical safety design;
Heat-shrink tube combined with plumbing provides excellent sealing performance and environmental protection;
External grounding outlet design allows easy grounding connection and reliable sealing protection;
Proven and mature design with extensive successful service experience.
Application
• Designed for the connection of high-voltage power cables;
• Suitable for various installation conditions, including underground tunnels, direct burial installations (protective box recommended), and installation on cable racks or supports;
• Applicable for long-distance HV cable system with Cross-bonding link box, link box with SVL or link box without SVL.
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 |
Overall Dimensions (L × Ø) /mm | 2020*270 | |||
Net Weight (Excluding Cable) / kg | 60 | 70 | 70 | 100 |
Optional Configurations
• Conductor connection between cables by crimping or mechanical connector;
• Optional protective FRP box according to the site requirement;
• Optional fiber optic outlet design;
• Different cable sections connection can be matched according to the sleeve’s using range.
Operating Conditions
• Ambient temperature: –55 °C to +45 °C
• Installation altitude: No limitation
Storage Conditions
• Recommended storage temperature: 10–25 °C
• Storage environment: Indoor, sealed, clean, dry, and protected from heavy load.
Insulated Joint Selection Guide(Recommended selection based on cable insulation diameter)
Voltage Level（kV） | Product Type | Conductor Size Range (mm²) | Cable Insulation Diameter (mm) | Protective Housing |
38/66/72.5 | YJJJI0 38/66 | 300~2000 | 50~87 | Copper/ AL case |
38/66/72.5 | YJJJI1 38/66 | 300~2000 | 50~87 | Copper/AL case + FRP protection box+ sealing compound |
38/66/72.5 | YJJJI2 38/66 | 300~2000 | 50~87 | Heat-shrinkable tube proection |
64/110/126 | YJJJI0 64/110 | 240~1600 | 50~87 | Copper/ AL case |
64/110/126 | YJJJI1 64/110 | 240~1600 | 50~87 | Copper/AL case + FRP protection box+ sealing compound |
64/110/126 | YJJJI2 64/110 | 240~1600 | 50~87 | Heat-shrinkable tube proection |
76/132/145 | YJJJI0 76/132 | 240~1600 | 50~87 | Copper/ AL case |
76/132/145 | YJJJI1 76/132 | 240~1600 | 50~87 | Copper/AL case + FRP protection box+ sealing compound |
76/132/145 | YJJJI2 76/132 | 240~1600 | 50~87 | Heat-shrinkable tube proection |
87/150/170 | YJJJI0 87/150 | 240~1600 | 50~87 | Copper/ AL case |
87/150/170 | YJJJI1 87/150 | 240~1600 | 50~87 | Copper/AL case + FRP protection box+ sealing compound |
87/150/170 | YJJJI2 87/150 | 240~1600 | 50~87 | Heat-shrinkable tube proection |
Note:If the Termination’s specification is outside the above ranges can be customized based on cable section and insulation diameter.
Coffin box
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