What is one of the major functions of insulators in a catenary system?

Insulators in a catenary system serve a vital role by separating power conductors from the supporting structures while also providing structural support for the overhead wires. This function is crucial because it ensures that the electric current flowing through the conductors does not unintentionally make contact with the supports, which could lead to short circuits or other electrical hazards. By maintaining this separation, insulators help to ensure a safe and efficient delivery of electricity to the trains. This is particularly important in maintaining the integrity of the electrical system, as well as ensuring the safety of both the equipment and personnel working in the vicinity. Additionally, the design of these insulators allows them to withstand various environmental conditions, thereby enhancing the reliability of the catenary system as a whole.