550kV Transformer Termination-High-voltage cable accessories catalogue-Products-Angelor (Jiangsu) Intelligent Electric co.,LTD.

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;
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 mechanical 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;

• 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

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