Non-armoured fire resistant electric cable - is designed to withstand temp. of 900 degrees centigrade for fifteen minutes

摘要

The non armoured fire resistant cable has three conductors (1) of 1.5 mm2 section each being of copper. The conductors are insulated by a vulcanised silicon rubber sheath. The cable instestices are filled by glassed fibre fillers (3). The whole is wrapped in ribbon (4) having a mica base on a glass silk substrate, overwhich is applied a vulcanised silicone rubber exterior sheath. The cable is designed to withstand an external temperature of 900 deg.C for 15 minutes whilst the conductors are submitted to a tension of 2 Newton per metre squared, with the designed voltage applied.