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 FRP box recommended), and installation on cable racks or supports;
• Applicable for cross-bonding earthing, protective earthing, or direct earthing in long-distance HV cable systems.
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 18890.
Technical Parameters
| Item | Technical Specifications |
Voltage Level（kV） | 127/220 (245) kV |
Rated Voltage (U₀ / U) | 127/220kV |
Highest System Voltage (Uₘ) | 245 kV |
| Partial Discharge Test /pC | At 1.5 U₀: no detectable PD above the specified sensitivity |
Power Frequency Withstand Voltage /kV | At 2.0 U0 for 30 min, no breakdown or flashover |
Lightning Impulse Level /kV | 1050 |
Overall Dimensions (L × Ø) /mm | 2200*540 |
Net Weight (excluding cable) /kg | 160 |
Optional Solutions
• 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 |
127/220/245 | YJJTI0 127/220 | 240~2500 | 81.5~114.5 | Copper/ AL case |
127/220/245 | YJJTI1 127/220 | 240~2500 | 81.5~114.5 | Copper/AL case + FRP protection box+ sealing compound |
127/220/245 | YJJTI2 127/220 | 240~2500 | 81.5~114.5 | Copper /AL box+sealing compound |
Note:If the Termination’s specification is outside the above ranges can be customized based on cable section and insulation diameter.
Coffin box
Copyright © 2026 Angelor (Jiangsu) Intelligent Electric co.,LTD.