Global UHV Power External Insulation System Solutions

Thirty years focused on power insulators, serving 100+ countries worldwide, supporting global energy internet construction

Learn More

765kV+ UHV Transmission Technology Leader

Core technology breaks international monopoly, composite insulators with global leading scale delivery

View Cases

Material Technology Innovation · Leading Industry Future

National specialized and sophisticated enterprise, 300+ invention patents, global power equipment core supplier

Technology Innovation

Transmission Line Insulators

765kV, 1000kV UHV composite long rod insulators with super anti-pollution, anti-aging, and anti-flashover characteristics.

Using independently developed high-performance silicone rubber materials, high mechanical strength, light weight, easy installation, service life up to 40 years.

Products are widely used in State Grid and overseas EHV/UHV transmission projects, with performance reaching international leading levels.

Product Types

Composite Long Rod Insulators

Suitable for 10kV-1100kV transmission lines, including different tower types such as straight towers, tension towers, and angle towers.

Product features: high mechanical strength, excellent electrical performance, anti-aging, anti-pollution flashover.

Application scenarios: UHV, EHV, high-voltage transmission lines.

Suspension Composite Insulators

Suitable for 10kV-500kV transmission lines, can replace traditional porcelain and glass insulators.

Product features: light weight, easy installation, excellent anti-pollution flashover performance.

Application scenarios: high-voltage, EHV transmission lines.

Crossarm Composite Insulators

Suitable for transmission line crossarm insulation, providing good insulation performance and mechanical support.

Product features: high mechanical strength, good insulation performance, anti-aging.

Application scenarios: transmission lines of various voltage levels.

Technical Parameters

Electrical Performance

Rated voltage: 10kV-1100kV
Power frequency wet withstand voltage: meets relevant standard requirements
Lightning impulse withstand voltage: meets relevant standard requirements
Partial discharge: ≤10pC
Creepage distance: designed according to pollution level

Mechanical Performance

Rated mechanical load: 10kN-550kN
Breaking load: not less than 1.5 times the rated mechanical load
Bending load: meets relevant standard requirements
Torsion load: meets relevant standard requirements

Environmental Performance

Temperature range: -40°C (-40°F) to +80°C (176°F)
Humidity range: ≤95%
Salt spray corrosion: meets relevant standard requirements
UV aging: meets relevant standard requirements
Service life: ≥40 years

Application Scenarios

UHV Transmission Lines

Suitable for 1000kV UHV AC and ±800kV UHV DC transmission lines, providing reliable guarantee for the safe operation of UHV power grids.

EHV Transmission Lines

Suitable for 330kV-500kV EHV transmission lines, improving line operation reliability and safety.

High-Voltage Transmission Lines

Suitable for 66kV-220kV high-voltage transmission lines, improving line insulation level and operation reliability.

Product Advantages

Excellent Electrical Performance

Excellent corona resistance, arc resistance, high insulation level, and low partial discharge.

High Mechanical Strength

High mechanical strength, strong impact resistance, bending resistance, suitable for various complex environments.

Good Weather Resistance

Excellent UV resistance, anti-aging performance, long service life, reducing maintenance costs.

Excellent Anti-pollution Flashover Performance

Suitable for heavily polluted areas, reducing line trip accidents, improving power supply reliability.