 |
Composite insulators designed for electrified railways feature compact structure, strong integrity, and anti-fouling capabilities. These components measure smaller in size and lighter in weight compared to traditional porcelain alternatives, with consistent internal and external insulation performance. The design eliminates requirements for regular cleaning schedules during operation.
The silicone rubber housing forms through a single injection molding process. This material demonstrates hydrophobic properties, hydrophobicity migration, and pollution resistance. These characteristics contribute to electrical insulation performance and aging resistance, supporting the prevention of pollution flashover incidents in high-voltage transmission line operations.
These insulators incorporate modified ECR fiberglass reinforced epoxy resin rods. This material exhibits resistance to high temperatures, stress corrosion, and acid exposure, along with damping properties. The core rod achieves tensile strength exceeding 1200MPa, with resistance to creep and fatigue failure, supporting the internal insulation quality and mechanical strength of each unit.
End fittings attach to the fiberglass rod using voice-operated displacement crimping equipment. This manufacturing technique produces insulators with consistent mechanical strength performance and low dispersion across production batches. The connection interface between end fittings and rods integrates with the sheds housing through overall high-temperature vulcanized silicone rubber injection molding, which minimizes interface gaps. An internal radial multi-seal structure supports long-term sealing reliability at the end fitting and rod connection points.
The support arm construction uses either stainless steel material or hot-dip galvanized cast steel, providing corrosion resistance. This material selection addresses product degradation under diverse climatic conditions including humidity and acid rain exposure, contributing to extended service life for compact circuit construction implementations.
Main Technical Parameter | ||||||||||
Model | Structure height H (mm) | Nominal creepage distance L (mm) | Design creepage distance L (mm) | Nominal dry arc distance (mm) | Design dry arc distance (mm) | Rated mechanical tensile failure load (kN) | Standard lightning impulse withstand voltage peak (kV) | Public frequency dry withstand voltage (kV) | Public frequency wet withstand voltage (kV) | Artificial pollution public frequency withstand voltage (kV) |
FQX-25/100(120)QT | 700±20 | 1200 | 1300 | 500 | 511 | 100(120) | 270 | 160 | 130 | 36 |
These composite insulators serve primarily in high-speed railway and urban light rail transportation infrastructure. The design accommodates electrified railway tunnels with complex operating conditions, supporting pollution flashover prevention and reducing cleaning and maintenance workload requirements. The reduced dimensions make these components suitable for installations with limited tunnel clearance, where porcelain and glass insulators cannot meet spatial constraints. Available housing colors include red, gray, and white as standard options. Production complies with IEC, ANSI, GB, and other international standards.
Production follows IEC, ANSI, GB, and additional international standards for high-voltage insulation components.
Support arms manufacture from either stainless steel or hot-dip galvanized cast steel, both providing corrosion resistance for diverse environmental conditions.
Special designs are available according to customer specifications for specific railway project requirements.
