Going back more than 50 years in the electrical industry, thermo set composite materials have recorded a long and successful history. With its long service life, many of the thermo set composite made electrical cabinets are still in use. There is a rigid network of cross-linked molecules held by chemical bonds in the thermo set composites, due to which it exhibit excellent dielectric strength. Thermo set composites are the best materials for insulating electrical system components as these have the ability to maintain both physical and electrical properties. Compounds made with thermo set binders can ensure excellent electrical & thermal insulation, dielectric properties, heat resistance and high flame resistance under mechanical loads.
Thermoset materials are the preferred choice for use in electricity line carriers / arms, utility poles, radar masts, telecommunication masts, electrical switches, antenna, cable trays, boxes, housings and cabinets. It is also proven to be the most preferred material among many electrical designers for insulating electrical components of circuit breakers, switchgear, standoff insulators and motor brush holders.
These are some of the applications where the exclusive benefits of FRP are being exploited.
The filament winding process is the most common method used in manufacturing telecommunication masts, utility poles and radar masts. The use of pultruded FRP profiles is quite common in assembling cross arms, electricity line carriers discharge rods, telescopic operating & earthling rods, antenna, switch sticks, cable trays, ladders and many more. SMC, being an easy material for handling is preferred for manufacturing large and high-strength electrical components such as equipment cabinets, meter boxes and a variety of structural parts.
All these major advantages with FRP like corrosion resistance, environmental safety, UV resistance and low installation costs are encouraging its use in the electrical industry.