Premolded stress cone with geometric design and uniform interfacial pressure from the spring compression system ensures effective electric field control and long-term reliability;
Sufficient electrical safety design;
Interface dimensions fully comply with the latest IEC and GB standards;
Dry-type, fully sealed top design for easy installation and elimination of gas leakage risk；
The epoxy insulator (GIS plug-in part) can be pre-installed in the GIS enclosure (with sealing insert or sealing plate) before ship to the site, allowing factory electrical testing together with the GIS equipment;
Extension rod design allows flexible configuration between short-type and long-type terminations;
Proven design with extensive service experience, ensuring high operational reliability.
Application
• Connects cables to high-voltage switch gear.
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, IEC 62271-209, GB/T 22381.
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 | 1550KV |
Overall Height L5/mm | 960mm/1400mm |
Net Weight (Excluding Cable) / kg | Approx. 130kg |
Optional Solutions
• End bell to Metallic Sheath Connection: plumbing or mechanic connection; • Connection between top connector and cable conductor by crimping or mechanical connector;
• Plug-in type or assembly type termination is available, supporting multi-angle installation;
• Optional flange surge arrester can be choosed (with L shape copper link);
• Optional fiber optic outlet design.
Operating Conditions
• Ambient temperature: –55 °C to +45 °C
• Installation: Indoor or outdoor substations, connected to GIS equipment; • Installation altitude: No limitation.
Storage Conditions
• Recommended storage temperature: 10–25 °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 | Standard (L5) (mm) | Conductor Size Range（mm²) | Cable Insulation Diameter(mm) |
290/500/550 | YJZWGGS 290/500 | 960 | 800~2500 | 100~135 |
290/500/550 | YJZWGGL 290/500 | 1400 | 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.
Product typial dimension
Conductor Size Range（mm²) | L5[mm] | t2Ø[mm] | M1xt1 |
800 ~ 2500 (Cu/Al) | Long:1400 Short:960 | 640 | M12x∅110 |
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