Product Video
1 / 1
110kV Composite Crossarm Insulator for Overhead Lines
Factory: We are a professional manufacturer providing OEM custom production services.
- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
A 110kV composite crossarm insulator is an integrated line component designed to provide conductor support, electrical insulation and phase-spacing control for high-voltage overhead power systems. Wishpower designs composite crossarms according to system voltage, mechanical loading, pollution severity, tower configuration and installation requirements. The product combines a high-strength fiberglass-reinforced core, silicone rubber housing and corrosion-resistant metal fittings. Compared with conventional steel crossarms and porcelain insulator assemblies, the integrated composite structure can reduce tower loading, simplify installation and improve resistance to pollution flashover, wind deflection, moisture, salt fog and industrial contamination.
Product Overview
The Wishpower 110kV composite crossarm insulator combines structural support and external insulation within a single engineered assembly. It supports the conductor, maintains the required electrical clearance and withstands bending, tensile, wind, ice and dynamic loads during line operation.
Its principal advantages include:
High-strength fiberglass-reinforced composite load-bearing core.
Hydrophobic silicone rubber housing and weather sheds.
Lower weight than conventional steel and porcelain assemblies.
Reduced number of separate fittings and connection points.
Customizable length, mounting angle and conductor attachment position.
Reliable operation in polluted, coastal and humid environments.
Suitable for compact overhead line and optimized tower designs.
Core Features
High mechanical strength
The fiberglass-reinforced core provides bending, tensile and fatigue resistance for conductor loads, wind pressure, ice accumulation and short-circuit forces.Excellent pollution performance
The silicone rubber surface provides hydrophobicity and hydrophobicity recovery, helping reduce the formation of continuous conductive water films under wet and contaminated conditions.Lightweight construction
The composite crossarm is lighter than many conventional steel-crossarm and porcelain-insulator combinations, simplifying transportation, lifting and installation.Weather and corrosion resistance
The external insulation system is designed to resist ultraviolet radiation, ozone, rain, temperature variation, salt fog and industrial pollution.Optimized line geometry
Custom crossarm dimensions and conductor attachment positions help maintain phase spacing, control wind swing and support compact line corridors.Custom engineering design
Mechanical load, creepage distance, insulation distance, mounting holes and fitting configurations can be designed according to project requirements.Reduced maintenance requirements
Silicone rubber sheds generally require less frequent cleaning than conventional insulating surfaces in many polluted environments.
Product Structure
A typical 110kV composite crossarm insulator consists of the following components:
Fiberglass-Reinforced Core
The principal load-bearing component, designed to withstand bending, tensile, torsional and long-term static loads.Silicone Rubber Housing and Sheds
The external insulation system that provides creepage distance, environmental protection and weather resistance.High-Voltage and Ground-End Fittings
Metal fittings used to connect the crossarm to the tower, support structure, conductor clamp or associated line hardware.End-Sealing System
A sealed interface between the composite core and metal fittings that helps prevent moisture and contaminants from entering the internal structure.Grading or Corona Rings
Installed when required to improve electric-field distribution and reduce corona activity and localized electrical stress.Conductor Connection Assembly
May include clamps, connection plates, attachment points or customized line hardware according to the installation design.
Technical Specifications
| Parameter | Application Range |
|---|---|
| Product Name | 110kV composite crossarm insulator |
| Rated Voltage | 110kV |
| Highest System Voltage | Typically suitable for 126kV systems |
| Rated Frequency | 50Hz or 60Hz |
| Product Type | Composite insulated crossarm or line crossarm insulator |
| Core Material | Fiberglass-reinforced epoxy resin rod |
| Housing Material | High-temperature vulcanized silicone rubber |
| End Fitting Material | Hot-dip galvanized steel, aluminum alloy, or customized material |
| Structural Configuration | Single-post, double-post, V-type, or customized assembly |
| Rated Mechanical Load | Customized according to conductor tension, wind load, and tower design |
| Main Load Types | Bending, tension, compression, and combined loads |
| Creepage Distance | Designed according to pollution class and project requirements |
| Dry Arcing Distance | Determined according to 110kV insulation coordination |
| Lightning Impulse Withstand Level | Designed according to system insulation requirements |
| Power-Frequency Withstand Level | According to 110kV system and project specifications |
| Installation Arrangement | Horizontal, inclined, V-type, or customized |
| Connection Type | Flange, eye, ball, clevis, or customized fitting |
| Operating Temperature | Typically -40°C to +50°C; special ranges available |
| Installation Altitude | Standard or high-altitude design |
| Applicable Environment | Coastal, humid, dusty, industrial, high-pollution, and general outdoor areas |
| Reference Standards | IEC 61109, IEC 61952, IEC 62217, or specified project standards |
| Product Color | Gray, red, or customized |
| Service Life | Subject to operating environment, installation quality, and maintenance conditions |
Product Structure
Main Applications
The 110kV composite crossarm insulator is suitable for power systems requiring mechanical support, high-voltage insulation and compact line design, including:
New and upgraded 110kV overhead transmission lines.
Compact urban overhead power lines.
Regional power lines serving rural and remote areas.
Substation incoming and outgoing overhead lines.
110kV wind farm transmission and grid-connection lines.
110kV photovoltaic power station collection and export lines.
External power supply lines for railway traction substations.
Coastal areas with high humidity and salt contamination.
Industrial areas with dust and chemical pollution.
Mountainous, windy and ice-prone overhead line routes.
Projects requiring reduced right-of-way or optimized tower dimensions.
Testing Capability
Wishpower can perform inspections and tests according to product design requirements, applicable standards, and customer specifications.
Visual and Dimensional Inspection
Checks overall length, shed dimensions, fitting positions, installation holes, and surface quality.Mechanical Bending Load Test
Verifies structural performance under specified bending loads.Tensile and Failure Load Test
Evaluates the strength of the core rod, end fittings, and crimped connections.Interface Sealing Inspection
Examines sealed areas between the silicone rubber housing and metal fittings.Power-Frequency Withstand Test
Confirms external insulation performance under specified power-frequency voltage.Lightning Impulse Withstand Test
Evaluates the ability of the crossarm insulator to withstand lightning impulse voltage.Partial Discharge and Corona Test
Assesses partial discharge and corona performance when required by the project.Hydrophobicity Inspection
Checks the surface condition and water repellency of the silicone rubber housing.Galvanizing and Corrosion Inspection
Verifies coating thickness, adhesion, and surface corrosion protection of metal fittings.Type, Sample, and Routine Tests
Design tests, type tests, sample tests, and routine inspections can be conducted according to applicable standards and technical agreements.
Packaging & Transportation
To keep products safe during transportation and storage, we use the following packaging methods:
- Individual Packaging: Each product is wrapped with protective film, packed in a high-strength carton, and cushioned with buffer materials.
- Pallet Packaging: Multiple products are fixed on wooden pallets and wrapped with stretch film, suitable for container shipping.
- Export Packaging: Fumigated wooden cases, moisture-proof treatment, and detailed packing lists are provided according to sea freight requirements.
Customization Service
WishPower can provide the following customization options according to customer requirements:
- Structural Dimensions: Adjust overall height, creepage distance, shed quantity, and shed diameter.
- End Fittings: Customize ball-socket, tongue-clevis, eye, or other interface types according to connection requirements.
- Color: Standard gray, with red, yellow, blue, and other colors available subject to MOQ.
- Special Environments: Formulations for extreme cold (-60 C), strong UV exposure, heavy pollution, and other harsh conditions.
- Voltage Classes: Full-range customization from 10kV to 1000kV.
- Marking: Customer logos or model numbers can be molded or printed on the product.
For specific customization requirements, please contact our sales engineers. We will provide a technical solution within 24 hours.
FAQ
Q: How do I choose the right composite insulator for my project?
A: You can provide voltage level, installation type, mechanical load, creepage distance and operating environment. Our team will recommend the suitable model.
Q: Can you supply complete products for transmission and distribution projects?
A: Yes. We can provide composite insulators, surge arresters, fuse cutouts, insulating bushings and related power insulation products.
Q: Are composite insulators suitable for coastal areas?
A: Yes. Composite insulators with silicone rubber housing provide good hydrophobicity and anti-pollution performance, making them suitable for coastal and polluted environments.
Q: What standards can your products meet?
A: Our products can be designed and tested according to IEC, ANSI, GB and customer-specific technical requirements.
Q: Can you provide customized insulation products?
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project requirements.
