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Thermoset Bulk Molding Compounds (BMC) and Sheet Molding Compounds (SMC) meet the requirements of the Rapid Transit industry with regard to low smoke generation and low flammability ratings, making them ideal for rapid transit, suburban commuter, and light rail systems' third rail electrical applications. The materials offer superior electrical insulation and heat resistance, allowing them to withstand prolonged exposure to the elevated temperatures and high voltage common in transit applications.
Thermoset materials have Comparative Tracking Index (CTI) values exceeding 600 volts and dielectric strengths in excess of 15 kv/mm. This, along with their excellent thermal properties, makes BMC and SMC molding compounds an ideal choice for the insulative needs of the Rapid Transit industry.
Applications for BMC and SMC in the Rapid Transit market include:
- Third rail insulators
- Third rail canopies
- Stand-off insulators
- Contactors
- Traction motor brush holders
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