FAQ

What are the advantages of using toughened glass insulators?

Toughened glass insulators have become a preferred choice for high‑voltage transmission and distribution projects due to these key advantages

Excellent mechanical strength

Toughened glass insulators have higher mechanical strength than traditional porcelain insulators, providing reliable performance under tension, bending and impact loads.

Stable electrical insulation

They maintain consistent dielectric performance over time, with good resistance to leakage current, flashover and electrical aging.

Long service life

Resistant to UV radiation, moisture, temperature changes and pollution, glass insulators typically last 30–50 years in service.

Easy inspection and maintenance

Internal defects will cause visible self‑destruction, allowing quick visual inspection without complicated live testing. This greatly reduces maintenance cost and labor.

Environmentally stable

They perform well in harsh environments including coastal, industrial, high‑altitude and heavily polluted areas, especially anti‑pollution and anti‑fog types.

High reliability and recyclable

Stable quality, low failure rate, and the glass material is environmentally friendly and recyclable.

Glass insulator is a key component used in power transmission and distribution lines, substations, and electrical equipment. It is mainly made of toughened glass, providing electrical insulation and mechanical support for overhead conductors.

  • Toughened glass suspension insulators (standard type, anti-fog type, aerodynamic type, two-alternating type, three-alternating type)
  • AC and DC glass insulators for high-voltage and extra-high-voltage transmission lines
  • Insulators for distribution lines, railway and power infrastructure applications
  • High mechanical strength and stable electrical performance
  • Visible self-destruction for easy inspection and maintenance
  • Excellent anti-aging, anti-ultraviolet, and weather resistance
  • Long service life, suitable for long-term outdoor operation

Our products cover a full range from 10kV up to 800kV and above, suitable for distribution, transmission, substation, and EHV projects.

Common ratings include 40kN, 70kN, 100kN, 120kN, 160kN, 210kN, 240kN, 300kN, 420kN, 550kN, etc. Custom loads are available for special projects.

Under normal operating and maintenance conditions, the service life is generally 30–50 years.

Self-destruction refers to the spontaneous breaking of toughened glass due to internal stress or impurities. It is an inherent characteristic. Our products have a low and controllable self-destruction rate in line with IEC and national standards.

  • System voltage level
  • Application: suspension, tension, dead-end, substation
  • Environment: pollution level, altitude, humidity, coastal or industrial area
  • Required mechanical load

Yes. We recommend anti-pollution / anti-fog glass insulators with increased creepage distance, specially designed for coastal, industrial, and high-pollution environments.

Yes. We can provide customized products optimized for high-altitude conditions with enhanced insulation performance.

All our glass insulators comply with:
 
  • IEC 60383
  • GB/T standard
  • ISO 9001 Quality Management System
    Some models also have ANSI, BS, AS, DIN, or other international certifications.
  • Strict incoming material inspection
  • Automatic production line and precise tempering process
  • 100% routine electrical and mechanical testing before delivery
  • Stable and reliable quality control system

Yes. We provide sample support for pre-delivery testing and verification.

Yes. We support:
 
  • Customized creepage distance
  • Special fittings and connection structures
  • Color, packaging, and marking customization
  • Project-specific design

We accept both small trial orders and large bulk orders. Contact us for details.

Standard export plywood crates or cartons with shockproof and moisture-proof protection to avoid damage during transportation.

Normally 15–35 days after order confirmation and deposit, depending on quantity and production schedule.

Yes. We ship worldwide by sea, land, or air, and provide full documentation including CO, PI, PL, CI, etc.

Yes. We offer:
 
  • Installation manuals
  • Technical drawings
  • On-site guidance (for large projects)
  • Regular visual inspection
  • Cleaning in heavily polluted areas
  • Timely replacement of broken insulators
    No complicated preventive tests are required.
  • Quick response to technical inquiries
  • Professional troubleshooting
  • Warranty service in line with international trade practices

We are a professional manufacturer of toughened glass insulators with our own factory, R&D, and production lines.

Yes. We welcome long-term cooperation with distributors, contractors, and power equipment companies worldwide.

You can reach us via:
 
  • Email
  • Phone
  • Website inquiry form
    Our team will reply within 24 hours.