Porcelain Suspension Insulators have a very long useful life. Through the decades, LAPP Insulators has been responsible for many developments in porcelain suspensions, including improvements in design, assembly, materials and testing which have significantly contributed to today’s standards. We offer a wide range of custom designs in addition to the full ANSI range, ensuring versatility and reliability. Our quality program surpasses industry standards, reflecting our commitment to dependability and innovation.

LAPP Insulators designed and produced the industry’s first line post insulator in 1931, using the early fog type design as foundation to build upon. For more than 80 years, LAPP has continued to set the industry standard, leading in the design, production, assembly, material and testing of line post insulators. Through research and development, LAPP offers new engineered solutions for Compact Line Construction using LAPP horizontal line posts. These insulators can be produced utilizing Lapp’s Resistive Graded RG® glaze for use in contaminated environments.

LAPP Strut Insulators offer transmission engineers an important design tool for use in building compact overhead lines or upgrading existing lines to higher voltages. Unlike suspension insulators that are designed for tension only, struts are rigid assemblies which can take both tension and compression loads. Struts are not designed for cantilever loading. They can be used to hold conductors away from supporting transmission towers in unique ways. Controlling the position of the conductor allows for smaller structures and shorter cross arms, so lines can be built on narrower rights-of-way.These insulators can be produced utilizing Lapp’s Resistance Graded RG® glaze for use in contaminated environments.

Here in the US, utilities have historically favored suspension bell configurations for supporting transmission lines. In the rest of the world a different technology is favored, and that technology is the porcelain long rod insulator (PLRI). Lapp has extensive experience producing these insulators and they come with several benefits over traditional bell style suspension insulators. Please contact us for more information about porcelain long rod insulators.

LAPP Insulators is a global leader in advanced compact line insulation designs and production, which allow electric utilities and transmission operators to cut construction costs, reduce right-of-way, minimize maintenance and assure maximum operating reliability. The compact, armless Horizontal Vee assembly controls conductor position, supporting the conductor on tension loaded suspension insulators, and restrains it in position with a strut insulator. LAPP Insulators offers Horizontal Vee assemblies that meet the requirements for most 115 kV through 500 kV applications. The flexibility of designs allows for modifications to fit special application requirements using similar basic components.