Insulators are used in a wide range of specific applications in power engineering. Depending on the field of application and the used materials- porcelain or composite - insulators are distinguished in different types. Longrod and Line Post insulators are required in power transmission e.g. for high voltage or railway power supply lines. They are also required to insulate guy-wires in antenna towers. Hollow core insulators and station post insulators are found in power plants and substations.

All insulators in service are subjected to various mechanical and electrical stress. The insulators performance must be maintained even in extreme and harsh environments as well as under all climatic conditions. Quality, know-how and competence in product design and engineering make insulators produced by Lapp Insulators to the most reliable and long-living components in power engineering.