Electrical Cross Arm
An electrical cross arm, also known as a crossarm or power pole cross arms, utility pole cross arms, telephone pole cross arms, light pole cross arms or crossarms for short.
A cross arm is provided, for use in a support structure for conductors within an electrical grid.
The surface processing way is hot dip galvanize.
Our electrical cross arm is made of hot deep galvanized steel. This material is strong to withstand any physical forces that act against eat. The galvanization protects the steel material from the effects of rust, corrosion, and abrasion.
Steel is the right choice of material for the electrical cross arm due to its tensile strength. It can sustain the mechanical forces which may threaten its stability.
Configurations
The electrical cross arm comes in five different configurations. There are different configurations for the electrical cross arm. For instance, power pole cross arms are connected with the pin insulator by an insulator pin, and the insulator connects with the wire to realize the power delivery. Light pole cross arms are used on the light pole to support the streetlight power.
Shape and Design
Electrical cross arms come in various configurations, but they generally have a similar shape and design. The most commonly used design is the straight bar cross arm. This design features a horizontal bar that is mounted perpendicularly to the utility pole. The straight bar design is favored because of its simplicity and ease of installation. It provides a stable and secure platform for supporting electrical conductors while maintaining the required spacing and clearance.
Another design option is the V-shaped cross arm, although it is not as popular as the straight bar design. The V-shaped cross arm configuration resembles the letter “V,” with the ends of the arm pointing upwards. This design offers additional support and strength compared to the straight bar design. By distributing the load more evenly, it helps prevent sagging of the electrical conductors and enhances the overall stability of the powerline. However, due to factors such as cost, availability, and specific application requirements, the V-shaped cross arm design is less commonly used.
Specification
Electrical cross arms feature holes of different sizes, depending on the components that will pass through them. The size of the hole is determined by the specific requirements of the power distribution system, such as the diameter of the conductors or the fittings that need to be accommodated.
These pole hardware fittings are available in various sizes or dimensions. The dimensions typically include measurements of the top face, length, and side depth of the cross arm. When purchasing an electrical cross arm, it is important to specify the desired dimensions to ensure a proper fit for the specific application.
The weight and tensile strength of overhead line hardware can vary from one electrical cross arm to another. These factors depend on various considerations, including the material used for construction, the intended load capacity, and the specific requirements of the power distribution network. It is essential to select a cross arm with the appropriate weight and tensile strength to ensure its structural integrity and safe operation within the system.
