10kV Composite Insulated Crossarm for Distribution Lines

Product Overview

As urban distribution networks, rural grids and overhead power lines demand higher insulation levels and more reliable structural performance, the 10kV composite insulated crossarm has become an effective alternative to conventional steel crossarms combined with porcelain insulators. The Wishpower 10kV composite insulated crossarm integrates conductor support and electrical insulation into one lightweight structure, providing pollution resistance, weather resistance, mechanical strength and simplified installation for modern medium-voltage distribution systems.

Product Overview

The Wishpower 10kV composite insulated crossarm is designed to support and insulate conductors on 10kV overhead distribution lines. It maintains the required conductor arrangement, transfers mechanical loads to the pole and provides electrical isolation between energized conductors and grounded supporting structures.

Compared with conventional assemblies consisting of steel crossarms, porcelain insulators and multiple connecting fittings, a composite crossarm uses a high-strength fiberglass-reinforced core, silicone rubber insulation and corrosion-resistant end fittings.

Its principal advantages include:

• Integrated mechanical support and electrical insulation.

• Reduced number of line components and connection points.

• Excellent hydrophobicity and pollution flashover resistance.

• Lower weight than conventional steel and porcelain assemblies.

• Easier transportation, lifting and field installation.

• Resistance to ultraviolet radiation, moisture and weathering.

• Customizable length, mounting holes, end fittings and mechanical ratings.

Core Features

1. Integrated insulation and conductor support
   The crossarm performs both mechanical and electrical functions, reducing the need for separate steel crossarms, insulators and auxiliary fittings.

2. Reliable pollution performance
   The silicone rubber housing offers hydrophobic properties that help maintain surface insulation under dust, salt fog, humidity and industrial pollution.

3. Lightweight construction
   Composite materials reduce the load applied to the top of the pole and simplify transportation and installation, particularly in mountainous or hard-to-access areas.

4. High mechanical strength
   The fiberglass-reinforced load-bearing core is designed to withstand conductor weight, wind load, ice load and operational mechanical stress.

5. Weather and corrosion resistance
   The external insulation is resistant to ultraviolet radiation, rain, temperature variation and moisture. End fittings can be manufactured from hot-dip galvanized steel or other corrosion-resistant materials.

6. Improved insulation coordination
   Optimized phase spacing, air clearance and creepage distance help improve protection against lightning impulses, switching overvoltage and pollution flashover.

7. Simplified installation and maintenance
   The integrated design reduces the number of components and fastening points, helping shorten installation time and minimize future maintenance requirements.

Product Structure

A typical Wishpower 10kV composite insulated crossarm consists of the following components:

1. High-strength load-bearing core
   The core is manufactured from fiberglass-reinforced composite material and carries conductor weight, wind load, ice load and bending stress.

2. Silicone rubber insulation housing
   The external housing protects the core and provides weather resistance, hydrophobicity, pollution resistance and tracking resistance.

3. Insulating sheds
   The shed profile increases the creepage path and helps reduce the risk of surface flashover in wet, dusty or salt-contaminated environments.

4. Conductor-side fitting
   This fitting connects conductor clamps, fastening assemblies or other line accessories to the crossarm.

5. Pole-side mounting fitting
   The mounting end connects the crossarm to concrete poles, steel poles or other supporting structures.

6. End sealing system
   The sealing structure prevents moisture, dust and corrosive substances from entering the interface between the core and end fittings.

7. Optional protective accessories
   Grading rings, arcing devices or other protective components may be added according to the insulation coordination and line design.

Why Choose Wishpower

Wishpower provides customized 10kV composite insulated crossarm solutions according to regional distribution-line requirements, pole structures and environmental conditions.

Customization options include:

• Pole type and available mounting space;

• Conductor arrangement and phase spacing;

• Conductor size and mechanical load;

• Wind speed and icing conditions;

• Pollution level and creepage distance;

• Fitting material and mounting-hole dimensions;

• Project standards and testing requirements.

By combining reliable electrical insulation with strong mechanical performance, the Wishpower 10kV composite insulated crossarm provides a lightweight, durable and low-maintenance solution for urban grids, rural distribution systems and renewable-energy overhead lines.