Round Frame Composite Insulation Crossarms

As an important part of the pole tower, the crossarms is used to install insulators and hardware to support wires and lightning protection wires and keep them at a certain safe distance as required.

The development history of crossarmss is roughly divided into wooden crossarmss, iron crossarmss, porcelain crossarmss, and composite material crossarmss.

The wood of wooden crossarmss is easy to crack during operation, the insulation strength is reduced in rainy days, and it is easy to rot, break, and ablate. Construction and maintenance are inconvenient, the maintenance workload is heavy, and the wood consumption is large. Timber stocks have become less and resources are scarce.

The lightning protection level of the iron crossarms is low, and the iron crossarms needs to be shielded during live operation; the matching pin insulator has a short creepage distance, a low lightning strike resistance level, and a high lightning tripping rate.

The crossarms is inconvenient to install, has poor dirt resistance, and is prone to breakage. The lightning strike resistance level is low, the lightning tripping rate is high, construction and maintenance are inconvenient, and the maintenance workload is heavy.

With the rapid development of the economy, overhead insulated conductors have been widely used. However, accidents such as disconnection of insulated conductors due to lightning strikes, lightning tripping, and power outages caused by overhead bare conductors being damaged by birds have always been an urgent problem for the State Grid's distribution operation, inspection and maintenance department. issues that need resolving. As the requirements for the stability of distribution lines continue to increase, the 10kV Round Frame Composite Insulation Crossarms has emerged to solve the above problems.