タイトルまたは説明

EPR

The first versions of EPR (ethylene propylene rubber-insulated), introduced in the early ***0s, demonstrated favorable characteristics that were quickly recognized by cable manufacturers. It presented weathering stability, heat resistance up to **0ºC, low temperature flexibility, and it was easily extruded.

Over the years, EPR insulation has become the standard insulation for most industrial applications, and in the last *0 years has become more popular with electric utility applications in network cables, substation underground feeder cables, and distribution cables because of its long-term reliability and strong performance over a **-year period.

Generally, EPR insulations retain their break-down (dielectric) strength in service over the life of the installation, given proper storage and handling of the cable prior to installation of the cable. The superior flexibility of the EPR-insulated medium voltage cable is an important factor in larger (kcmil-sizes) as those cables must be trained and coiled in vaults and other enclosures. The linemen expend less effort, reducing risk of muscle strains. This insulation has a solid history of reliability, superior flexibility, and strong performance in wet applications, as well as improved flame retardancy over TR-XLP insulations.