1×660 mm² THAL Passthrough Connector

Product Description：

The 1×660 mm² THAL Passthrough Connector is a heavy-duty line fitting specially designed for Ultra-High Voltage (UHV) transmission systems. It is used for continuous conductor connection without cutting the main conductor, ensuring stable current flow and mechanical strength on long-span overhead lines. Manufactured from high-conductivity aluminum alloy, this connector is engineered to handle extremely high current loads while maintaining low electrical resistance and excellent thermal performance under UHV operating conditions.

Special Marking – UHV Application:

• Designed specifically for Ultra-High Voltage (UHV) transmission projects

• Suitable for large cross-section conductors (1×660 mm²)

• Meets mechanical and electrical requirements of UHV lines

Product Advantages：

1. Ultra-High Voltage Rated Design：Engineered for UHV transmission environments with extreme current and tension demands.

2. High Conductivity Aluminum Alloy：Ensures low contact resistance and reduced power loss.

3. Passthrough Structure：Allows continuous conductor connection without cutting the main line.️

4. Excellent Thermal Performance：Maintains stable operation under long-term high-current conditions.

5. High Mechanical Strength：Suitable for long-span and heavy-tension UHV lines.
   

Application Scenarios：

1. Ultra-High Voltage (UHV) AC & DC Transmission Lines：The 1×660 mm² THAL passthrough connector is widely applied in UHV AC and DC overhead transmission lines, ensuring continuous electrical and mechanical performance along long-distance power corridors. It maintains conductor integrity while supporting extremely high current loads.

2. Long-Span Crossing Sections (River / Valley / Highway)：In long-span sections where conductor tension and thermal expansion are critical, the passthrough connector provides stable mechanical strength without introducing cutting points, reducing fatigue risks under dynamic loads.

3. UHV Grid Expansion & Reinforcement Projects：Used during UHV line upgrades to reinforce existing conductors or integrate new line sections while maintaining uninterrupted conductor continuity.

4. High-Current Backbone Transmission Corridors：Designed for backbone transmission corridors where continuous high-current operation requires connectors with excellent thermal stability and low resistance.

5. Extreme Climate & High-Altitude UHV Projects：Suitable for deserts, cold regions, coastal areas, and high-altitude UHV projects where temperature variation and environmental stress are significant.

• Manufactured under strict UHV project quality control procedures

• Electrical resistance tested to ensure ultra-low contact resistance

• Mechanical tensile and slip tests meet UHV conductor load requirements

• Thermal cycling tests conducted under high-current conditions

• Dimensional precision verified for large cross-section conductors

• Material traceability and batch inspection available upon request

Frequently Asked Questions：

Q1: Is this connector approved for UHV projects?

A1: Yes. It is designed specifically for UHV transmission lines and tested according to UHV electrical and mechanical requirements.

Q2: Can it withstand long-term high current operation?

A2: Yes. The high-conductivity aluminum alloy and optimized contact design ensure stable performance under continuous high-current conditions.

Q3: Does installation affect conductor integrity?

A3: No. The passthrough design avoids cutting or weakening the main conductor.

Q4: Is it suitable for large-span and high-tension sections?

A4: Yes. It provides sufficient mechanical strength for long-span and high-tension UHV lines.

Q5: Can test reports be provided for bidding projects?

A5: Yes. Electrical, mechanical, and material test reports can be provided upon request.