800kv-composite-suspension-insulator800kv-composite-suspension-insulator-1

800kV Composite Suspension Insulator

 

SH Power provides customized design services according to different voltage levels and environmental conditions. Our technical experts offer comprehensive support—from insulation performance analysis and installation guidance to operation and maintenance advice—ensuring optimal performance under complex operating conditions.

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Description

For the 800 kV power line composite insulators, the technical specification mandates that the tear strength of the UHV composite insulator umbrella sleeve material be raised from 10kN/m to 12kN/m, with the elongation at tear increasing from ≥150% to ≥200%. Our company enhances the water repellency, migration, recovery, and durability of the umbrella sleeve material while maintaining the physical and mechanical properties and electrical properties of the vulcanized rubber.

 

ModelFXBZ±800/210(180,160)FXBZ±800/420(400) FXBZ±800/550(530) FXBZS±800/210(180,160) 
Rated Voltage(kV)±800±800±800±800
Specified Mechanica Load(kN)210(180,160)420(400)550(530)210(180,160)
Mark of Connection284042 
Structure height(mm)9600960096009956
Insulation Distance(mm)9068889688449056
Creepage Distance(mm)36960369603696036960
Lightning Impulse Withstand Voltage3600360036003600
Switching impulse withstand Voltage1950195019501950
1 Min Power Requency Wet Withstand Voltage900900900900

 

  • The end fitting, mandrel, core rod, and the high-temperature vulcanized silicone rubber sheath wrapped around the mandrel are permanently sealed together through adhesive bonding under temperature and pressure.
  • The “concave-convex-concave” labyrinth seal path, measuring up to 40 (±3) mm, represents a 35% to 67% improvement over traditional sealing structures, significantly enhancing end-sealing performance.
  • The convex structure at the metal attachment end, resembling a spherical surface, greatly reduces electric stress concentration compared to the traditional right-angle tip surface. This design minimizes tip discharge, effectively preventing damage to the sheath and core rod caused by insulator end fitting discharge, thereby improving the reliability of the end-sealing structure under operational conditions.
  • The thickness of the silicone rubber material is optimized to ensure uniform vulcanization, thereby guaranteeing the quality and reliability of the end-seal structure.

 

Key Features

  • Wide Product Range

Overhead line high-voltage, extra-high voltage, and ultra-high voltage suspension products; high-voltage line post-type products; composite crossarms for distribution networks; composite post insulators for substation busbars and equipment.

  • Advanced Composite Materials

Manufactured with high-strength epoxy fiberglass cores and high-quality silicone rubber housings, they offer excellent pollution flashover resistance and anti-aging performance.

  • Lightweight & High Strength

At the same voltage level and mechanical strength class, composite insulators weigh only about 1/7 to 1/10 of ceramic/glass insulators, reducing steel consumption for towers and lines and significantly cutting infrastructure costs.

  • Excellent Electrical Performance

With a pollution flashover voltage more than twice that of ceramic/glass insulators, they minimize the risk of flashover failures caused by contamination, indirectly lowering operation and maintenance expenses.

  • Strong Weather Resistance

They operate reliably in harsh environments such as extreme cold, high temperatures, coastal areas, and heavily polluted regions.

  • Long Service Life

Thanks to an eco-friendly and intelligent manufacturing process, composite insulators offer excellent quality consistency and a service life exceeding 30 years.

Applications and Utility

  • Transmission lines and substations

Through material innovation and structural optimization, composite insulators achieve an optimal balance of high strength, lightweight design, and long service life. Offering high cost-effectiveness, they are critical components in modern power systems for enhancing line safety and are widely used in transmission lines and substations.

  • Ultra-High Voltage (UHV) Transmission Lines

Our composite insulators are extensively used in 1000kv,±800kV and other UHV DC and AC transmission projects, providing reliable insulation for critical national power arteries.

  • Converter and Substations

Composite post insulators serve as the external-insulation support components for all kinds of equipment in converter stations and substations, providing both electrical insulation and structural support for busbars and electrical apparatus.

  • DC and AC Filter Systems

Widely applied to support reactors and capacitors in DC and AC filter fields, which are crucial for maintaining power quality in the grid.

  • High-Voltage Electrical Equipment

Used as integral insulation components for various high-voltage equipment, including circuit breakers, disconnectors, and arresters.

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