ABB, Inc.

ABB produces hollow composite insulators by extruding silicone rubber sheds on to a composite tube using a patented helical extrusion process. These well-established manufacturing practices and improved material properties ensure reliable service over the life of ones electrical apparatus. ABB Composite Insulators with silicone rubber sheds offer many advantages over traditional ceramics: * improved safety for personnel and equipment * superior pollution performance due to hydrophobic surface condition * excellent seismic performance * low weight * short delivery times * flexible design ABB Composite Insulators are normally used in: * circuit breakers * bushings * instrument transformers * cable terminations ABB is currently providing hollow composite insulators in the voltage range 72 kV 800 kV and in lengths up to 10 m. All composite insulators are tested and certified according to IEC 61462.