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.