High voltage insulators are essential components used in electrical systems to prevent the flow of electricity to unwanted areas. They are designed to withstand high voltages and are typically made from materials like glass, porcelain, or composite polymers. These insulators support and separate electrical conductors, ensuring safety and efficiency in power transmission. In power lines, high voltage insulators help maintain the integrity of the system by preventing short circuits and electrical leakage. They are crucial for the operation of equipment such as transformers and substations, allowing electricity to be transmitted over long distances without loss or danger to the environment.